JL Audio Speaker 1000 1v2 User Manual

OWNER’S MANUAL  
monoblock subwoofer amplifier  
Thank you for purchasing a JL Audio amplifier for  
your automotive sound system.  
Your amplifier has been designed and manufactured to exacting  
standards in order to ensure years of musical enjoyment in your vehicle.  
For maximum performance and extended warranty  
coverage, we highly recommend that you have your new amplifier  
installed by an authorized JL Audio dealer. Your authorized  
dealer has the training, expertise and installation equipment to ensure  
optimum performance from this product. Should you  
decide to install the amplifier yourself, please take the time  
to read this manual thoroughly so as to familiarize yourself  
with its installation requirements and setup procedures.  
If you have any questions regarding the instructions in this  
manual or any aspect of your amplifier’s operation, please contact your  
authorized JL Audio dealer for assistance. If you need further assistance,  
please call the JL Audio Technical Support Department  
at (954) 443-1100 during business hours.  
 
PROTECT YOUR HEARING!  
INSTALLATION APPLICATIONS  
We value you as a long-term customer. For  
that reason, we urge you to practice restraint in  
the operation of this product so as not to damage  
your hearing and that of others in your vehicle.  
Studies have shown that continuous exposure to  
high sound pressure levels can lead to permanent  
(irreparable) hearing loss. This and all other  
high-power amplifiers are capable of producing  
such high sound pressure levels when connected  
to a speaker system. Please limit your continuous  
exposure to high volume levels.  
This amplifier is designed for operation in  
vehicles with 12V, negative-ground electrical  
systems. Use of this product in vehicles with  
positive ground and/or voltages other than 12V  
may result in damage to the product and will void  
the warranty.  
This product is not certified or approved for  
use in aircraft.  
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amplifier with the outputs of a second amplifier,  
including an identical one.  
Cooling Efficiency Considerations:  
Your JL Audio amplifier employs an  
If mounting the amplifier under a seat,  
make sure there is at least 1 inch (2.5 cm) of  
space above the amplifier’s outer shell to permit  
proper cooling.  
advanced type of heat management, called  
RealSink™. This feature takes advantage of  
convection and radiation effects to remove  
heat from the amplifier circuitry. For optimum  
cooling performance, the vertical heat sinks  
located at the back of the amplifier should be  
exposed to as large a volume of air as possible.  
Enclosing the amplifier in a small, poorly  
ventilated chamber can lead to excessive heat  
build-up and degraded performance. If an  
installation calls for an enclosure around the  
amplifier, we recommend that this enclosure  
be ventilated with the aid of a fan. In normal  
applications, fan-cooling is not necessary, but  
you still need to follow some basic guidelines:  
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pointing up: Optimum  
Safety Considerations:  
Your amplifier needs to be installed in a dry,  
well-ventilated environment and in a manner  
which does not interfere with your vehicle’s safety  
equipment (air bags, seat belt systems, ABS brake  
systems, etc.). You should also take the time to  
securely mount the amplifier using appropriate  
hardware so that it does not come loose in the  
event of a collision or a sudden jolt to the vehicle.  
While driving, operate your audio system in  
a manner that still allows you to hear necessary  
noises to operate your vehicle safely (horns,  
sirens, etc.).  
PLANNING YOUR INSTALLATION  
It is important that you take the time to read  
this manual and that you plan out your  
installation carefully. The following are some  
considerations that you must take into account  
when planning your installation.  
Stupid Mistakes to Avoid:  
SERIAL NUMBER  
tꢀCheck before drilling any holes in your vehicle  
to make sure that you will not be drilling  
through a gas tank, brake line, wiring harness or  
other vital vehicle system.  
tꢀ%PꢀOPUꢀSVOꢀTZTUFNꢀXJSJOHꢀPVUTJEFꢀPSꢀVOEFSOFBUIꢀ  
the vehicle. This is an extremely dangerous  
practice which can result in severe damage to  
your vehicle and person.  
tꢀ1SPUFDUꢀBMMꢀTZTUFNꢀXJSFTꢀGSPNꢀTIBSQꢀNFUBMꢀ  
edges and wear by carefully routing them,  
tying them down and using grommets and  
loom where appropriate.  
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compartment, under the vehicle, on the roof  
or in any other area that will expose the  
amplifier circuitry to the elements.  
In the event that your amplifier requires  
service or is ever stolen, you will need to  
have a record of the product’s serial number.  
Please take the time to enter that number in  
the space provided below. The serial number  
can be found on the bottom panel of the  
amplifier and on the amplifier packaging.  
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right side up: Good  
tꢀ"NQMJGJFSꢀNPVOUFEꢀIPSJ[POUBMMZꢁꢀCVUꢀVQTJEFꢀ  
down: Fair (not recommended if there is  
less than 1 inch (2.5 cm) clearance above the  
amplifier heat sinks)  
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pointing laterally: Fair  
Serial Number:  
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pointing down: Poor (not recommended)  
Selects Low-Pass  
or High-Pass Mode  
for Output Filter  
(pg. 8)  
Parametric EQ  
"Q" (Bandwidth  
Selection Control  
(pg. 9)  
Input Voltage  
Range Selector  
(pg. 6)  
Parametric EQ  
Boost Control  
(pg. 9)  
Reverses Polarity  
of Amp Output  
(pg. 10)  
Chassis Ground  
Connector  
(pg. 5)  
Preamp Output  
Amplifier Low-Pass  
Positive  
Negative  
Parametric EQ  
Filter Slope  
Selector  
(pg. 8)  
Filter Slope  
Selection / Defeat  
(pg. 7)  
Preamp Output  
Mode Selector  
(pg. 8)  
Input Sensitivity  
Control  
(pg. 7)  
Subwoofer Subwoofer  
+12 V Power  
Connector  
(pg. 5)  
Remote Turn-On  
Connector  
(pg. 6)  
Infrasonic Filter  
Defeat Switch  
(pg. 9)  
Center Frequency  
Selection Control  
(pg. 9)  
Outputs  
(pg. 10)  
Outputs  
(pg. 10)  
+12VDC Ground Remote  
Preamp Output Section  
Infrasonic Filter  
Mode  
“Q”  
1.6  
Center Freq.  
45  
Boost (dB)  
+10  
Amp LP Filter Amplifier Input Section  
Subwoofer Output  
|
Output Mode  
Filter Slope  
Mode Slope  
Input Voltage Input Sens.  
Output Polarity  
1.1  
0.7  
0.5  
2.7 35  
55 +4  
+13  
25  
70  
|
|
|
|
|
|
|
|
Full Range Amp Filter Out Filter  
12dB 24dB  
Off On  
Off 12dB 24dB  
Low High  
Normal Reversed  
4.3 20  
80  
0
+15  
65  
30  
65  
Filter Mode  
Bass EQ  
55  
45  
40  
Filter Freq. (Hz)  
85  
120  
200  
25  
18  
15  
40  
50  
60  
55  
45  
40  
80  
100  
200  
Advanced  
Bass  
Control  
1000/1v2  
MONO OUTPUT ONLY  
Monoblock Subwoofer Amplifier  
|
|
LP HP  
Off On  
Left Output Right Output  
Infrasonic Freq. (Hz)  
Remote Bass Port  
Filter Freq. (Hz)  
Left Ch.  
Right Ch.  
Left and Right  
Preamp Output Jacks Cutoff Frequency  
(pg. 8) (pg. 8)  
Selects Output Filter  
Selects Infrasonic  
Filter Cutoff  
Frequency  
(pg. 9)  
Bass EQ  
Defeat Switch  
(pg. 9)  
Jack for  
Selects Low-Pass  
Filter Frequency for  
Amplifier Channel  
(pg. 8)  
Left and Right  
Input Jacks  
(pg. 6)  
Remote Bass  
Control Knob  
(pg. 9)  
2 | JL Audio - 1000/1v2 Owner’s Manual  
3
 
PRODUCT DESCRIPTION  
POWER CONNECTIONS  
The JL Audio 1000/1v2 is a monoblock  
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is not designed for driving midrange speakers or  
tweeters. Every aspect of its operation has been  
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For detailed specifications, please refer to  
Appendix B (page 15).  
6) Find a good, solid metal grounding point  
close to the amplifier and connect the  
negative power wire to it using appropriate  
hardware. Use minimum 4 AWG power wire,  
no longer than 36 inches (90 cm) from the  
amplifier to the ground connection point. In  
some vehicles, it may be necessary to upgrade  
the battery ground wire. (See page 5 for  
important notice).  
7) Securely mount the amplifier using  
appropriate hardware.  
8) Connect the positive and negative power  
wires to the amplifier. A fuse near the  
amplifier is not necessary.  
Before installing the amplifier,  
The ground connection should be made  
using 4 AWG wire and should be kept as short  
as possible, while accessing a solid piece of sheet  
metal in the vehicle. The surface of the sheet  
metal should be sanded at the contact point to  
create a clean, metal-to-metal connection between  
the chassis and the termination of the ground  
wire. For optimal grounding, we recommend  
the use of a JL Audio ECS master ground  
lug (XB-MGLU). Alternatively, a sheet metal  
screw or bolt can be used with a star washer.  
Any wires run through metal barriers (such as  
firewalls), must be protected with a high quality  
insulating grommet to prevent damage to the  
insulation of the wire. Failure to do so may result  
in a dangerous short circuit.  
disconnect the negative (ground) wire  
from the vehicle’s battery. This will prevent  
accidental damage to the system, the vehicle  
and your person during installation.  
+12VDC Ground Remote  
TYPICAL INSTALLATION SEQUENCE  
The following represents the sequence  
for a typical amplifier installation, using an  
aftermarket source unit or OEM Interface  
processor (like the CleanSweep® CL441dsp).  
Additional steps and different procedures may  
be required in some applications. If you have  
BOZꢀRVFTUJPOTꢁꢀQMFBTFꢀDPOUBDUꢀZPVSꢀBVUIPSJ[FEꢀ  
JL Audio dealer for assistance.  
1000/1v2  
Monoblock Subwoofer Amplifier  
9) Connect the remote turn-on wire  
to the amplifier.  
10) Connect the RCA input cables  
to the amplifier.  
The 1000/1's “+12 VDC” and “Ground”  
connections are designed to accept 4 AWG power  
wire. 4 AWG is the only recommended power  
wire size for this amplifier.  
If you are installing the 1000/1 with other  
amplifiers and wish to use a single main power  
wire, use 2 AWG or 1/0 AWG main power wire  
(depending on the overall current demands of all  
the amplifiers in the system). This 2 AWG or  
1/0 AWG power wire should terminate into  
a distribution block mounted as close to the  
amplifiers as possible and should connect to the  
1000/1 with 4 AWG power wire.  
IMPORTANT  
!
11) Connect the speaker wires to the amplifier.  
12) Carefully review the amplifier’s control  
settings to make sure that they are set  
according to the needs of the system.  
13) Install power wire fuse (100A for a  
single 1000/1v2) and reconnect the negative  
battery post terminal.  
14) Turn on the source unit at a low level  
to double-check that the amplifier is  
configured correctly. Resist the temptation  
to crank it up until you have verified the  
control settings.  
15) Make necessary adjustments to the input  
sensitivity controls to obtain the right  
overall output and the desired balance  
in the system. See Appendix A (page 14)  
for the recommended input sensitivity  
setting method.  
Many vehicles employ small (10 AWG -  
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connection and secure the disconnected cable  
to prevent accidental re-connection during  
installation. This step is not optional!  
2) Run power wire (minimum 4 AWG)  
from the battery location to the amplifier  
mounting location, taking care to  
route it in such a way that it will not be  
damaged and will not interfere with  
vehicle operation. Use 2 AWG or 1/0  
AWG power wire if additional amplifiers  
are being installed with the 1000/1v2.  
3) Connect power wire to the positive battery  
post. Fuse the wire with an appropriate fuse  
block (and connectors) within 18 inches  
(45 cm) wire length of the positive battery  
post. This fuse is essential to protect the  
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wire has been connected to the amplifier.  
4) Run signal cables (RCA cables) and remote  
turn-on wire from the source unit to the  
amplifier mounting location.  
6 AWG) wire to ground the battery to the vehicle  
chassis and to connect the alternator’s positive  
connection to the battery. To prevent voltage  
drops, these wires should be upgraded to 4  
AWG (or larger) when installing a 1000/1v2.  
FUSE REQUIREMENTS  
It is absolutely vital that the main power  
lead to the amplifier(s) in the system be fused  
within 18 inches (45 cm) of the positive battery  
post connection. The fuse value at each power  
wire should be high enough for all of the  
equipment being run from that power wire.  
If only the 1000/1v2 is being run from that power  
wire, we recommend a 100A ANL fuse be used.  
No fuse is required directly before the  
amplifier power connection. If one is desired,  
we recommend the use of a 100A ANL fuse for  
each 1000/1v2.  
Note: that smaller AWG numbers mean bigger  
wire and vice-versa (1/0 AWG is biggest, 2 AWG  
is smaller, then 4 AWG, then 8 AWG, etc.).  
To connect the power wires to the amplifier,  
first back out the set screw on the top of the  
amplifier, using the supplied 2.5 mm hex wrench.  
Strip 1/2 inch (12 mm) of insulation from the  
end of each wire and insert the bare wire into the  
receptacle on the front panel of the amplifier,  
seating it firmly so that no bare wire is exposed.  
While holding the wire in place, tighten the set  
screw firmly, taking care not to strip the head  
of the screw.  
16) Enjoy the fruits of your labor with your  
favorite music.  
5) Run speaker wire from the speaker systems to  
the amplifier mounting location.  
4 | JL Audio - 1000/1v2 Owner’s Manual  
5
 
REMOTE TURN-ON  
AMPLIFIER INPUT SECTION  
The 1000/1v2 uses a conventional +12V remote  
turn-on lead, typically controlled by the source  
unit's remote turn-on output. The amplifier will  
turn on when +12V is present at its “Remote”  
input and turn off when +12V is switched off. If  
a source unit does not have a dedicated remote  
turn-on output, the amplifier’s turn-on lead can  
be connected to +12V via a switch that derives  
power from an ignition-switched circuit.  
The 1000/1's “Remote” turn-on connector is  
designed to accept 12 AWG – 8 AWG wire.  
12 AWG is more than adequate for this purpose.  
To connect the remote turn-on wire to the  
amplifier, first back out the set screw on the  
top of the amplifier, using the supplied hex  
wrench. Strip 1/2 inch (12mm) of wire and  
insert the bare wire into the receptacle on the  
front panel of the amplifier, seating it firmly so  
that no bare wire is exposed. Smaller wire than  
12 AWG can be used, but it may be necessary  
to strip 1 inch of insulation from the wire and  
fold the bare wire in half prior to insertion.  
While holding the wire in the terminal, tighten  
the set screw firmly, taking care not to strip  
the head of the screw and making sure that  
the wire is firmly gripped by the set screw.  
The 1000/1v2 employs a differential-balanced  
input topology that provides the user with a high  
degree of input flexibility while retaining superior  
noise rejection. This type of circuit also allows  
the 1000/1v2 to accept high-voltage inputs from  
factory source unit outputs without excessive  
distortion or noise problems.  
The amplifier will operate with only one input  
connection (left or right), but will require an  
increase in input sensitivity to overcome the loss  
of signal. If a mono input signal is to be run, we  
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JL Audio ECS model XB-CLRAICY-1F2M to split  
the mono signal into both inputs of the amplifier.  
3) Input Sensitivity Adjustment: Located  
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iAmplifier Input SectionwꢁꢀJTꢀBꢀSPUBSZꢀDPOUSPMꢀ  
MBCFMFEꢀiInput Sens.wꢂꢀ0ODFꢀUIFꢀBQQSPQSJBUFꢀ  
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rotary control can be used to match the source  
unit’s output voltage to the input stage of the  
amplifier for maximum clean output. Rotating  
the control clockwise will result in higher  
sensitivity (louder for a given input voltage).  
Rotating the control counter-clockwise will  
result in lower sensitivity (quieter for a given  
input voltage). To properly set the amplifier  
for maximum clean output, please refer to  
Appendix A (page 14) in this manual. After  
using this procedure, you can then adjust  
the level of the amplifier by adjusting the  
input sensitivity downward, if the amplifier  
requires attenuation to achieve the desired  
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Sens.wꢀTFUUJOHꢀGPSꢀBOZꢀBNQMJGJFSꢀJOꢀUIFꢀTZTUFNꢀ  
beyond the maximum level established during  
the procedure outlined in Appendix A (page  
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and possible speaker damage.  
2) Input Voltage Range: A wide range of signal  
input voltages can be accommodated by  
the 1000/1v2’s input section (200mV – 8V).  
This wide range is split up into two sub-  
ranges, accessible via switches located in the  
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5IFꢀiLowwꢀQPTJUJPOꢀPOꢀUIFꢀiInput Voltagewꢀ  
switch selects an input sensitivity range  
between 200mV and 2V. This means that  
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within that voltage window. If you are using  
an aftermarket source unit, with conventional  
preamp-level outputs, this is most likely the  
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POꢀUIFꢀiInput VoltagewꢀTXJUDIꢀTFMFDUTꢀBOꢀJOQVUꢀ  
sensitivity range between 800mV and 8V. This  
is useful for certain high-output preamp level  
signals as well as speaker-level output from  
source units and small amplifiers. To use  
speaker-level sources, splice the speaker output  
wires of the source unit or small amplifier  
onto a pair of RCA cables or plugs or use the  
JL Audio ECS Speaker Wire to RCA adaptor  
(XB-CLRAIC2-SW).  
r
Amplifier Input Section  
Input Voltage Input Sens.  
O
N
|
B
Low High  
0
Left Ch.  
Right Ch.  
1) Input Connections: A standard left/right pair  
of RCA type jacks is used for input on  
the 1000/1v2. You may run a stereo or a mono  
signal into the inputs of the amplifier. The  
amplifier’s input section automatically sums  
stereo signals to mono for the internal  
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ModewꢀPGꢀUIFꢀiPreamp OutputwꢀTFDUJPOꢂ  
+12VDC Ground Remote  
IMPORTANT  
!
If you plan to use the “Preamp Output” in  
“Full-Range” or “HP” mode to feed a stereo  
amplifier, you must connect a stereo signal to  
the input of the amplifier. A mono signal into  
the amplifier will result in a mono signal out of  
the preamp output. (It’s a great amplifier, but it  
doesn’t do magic).  
1000/1v2  
Monoblock Subwoofer Amplifier  
IMPORTANT  
!
The output of the amplifier will decrease  
for a given input voltage when the “Input  
Range” switch is placed in the “High” position.  
Conversely, the output will be higher with  
the switch in the “Low” position. While this  
may sound counter-intuitive, it is correct  
as described.  
6 | JL Audio - 1000/1v2 Owner’s Manual  
7
 
CROSSOVER CONTROLS  
PREAMP OUTPUT SECTION  
Crossovers are groups of individual electronic  
filters which allow only certain frequency  
ranges to pass through them by attenuating  
frequencies outside the selected range. These  
filters allow the user to specify what frequency  
range will be sent out of each channel section  
of the amplifier. This, in turn, allows each  
speaker system to only reproduce a range of  
frequencies it is well-suited for, resulting in  
reduced distortion and improved fidelity.  
Tuning Hint: A trunk mounted sub whose  
output has to "fight" through a rear deck or a  
back seat often benefits from the 12 dB/octave  
slope which lets more upper bass content  
pass through. A sub that fires directly into  
the listening environment is more likely  
to benefit from a 24 dB/octave slope.  
The 1000/1v2 incorporates a flexible preamp  
output section, designed to make multiple  
amplifier systems easy to set up.  
The Preamp output can be configured in three  
EJGGFSFOUꢀiOutput Modeswꢊ  
3) “Out Filter”: The preamp output is  
filtered by a fully variable, active filter  
incorporated into the output section  
and is not affected by the bass control  
processing selected for the amplifier. In  
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b) 12 dB/octave or 24 dB/ octave filter slope by  
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c) A filter cutoff frequency between 40 - 200  
)[ꢀGPSꢀUIFꢀQSFBNQꢀPVUQVUꢀTJHOBMꢀCZꢀXBZꢀPGꢀ  
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Preamp Output Section  
Output Mode  
Filter Slope  
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You should always listen to the system carefully  
to determine the best choice as vehicle acoustics  
and other factors play a big role in choosing the  
most appropriate filter slope.  
|
|
|
Full Range Amp Filter Out Filter  
12dB 24dB  
65  
Filter Mode  
55  
45  
40  
Filter Freq. (Hz)  
85  
120  
200  
AMPLIFIER LOW-PASS FILTER  
|
LP HP  
The 1000/1v2 employs a sophisticated, state-  
variable, low-pass active filter for its internal  
channel. This feature is designed to attenuate  
frequencies above its filter frequency, so that the  
system’s subwoofers do not reproduce any audible  
midrange content.  
Left Output Right Output  
2) Precise Frequency Selection: The filter  
frequency markings on the front panel of  
the amplifier are for reference purposes and  
are generally accurate to within 1/3 octave  
or better. If you would like to select the filter  
frequency with a higher level of precision,  
consult Appendix C: Chart A-1 (page 16)  
of this manual. This chart gives you a more  
accurate frequency for each of the forty  
detented positions of the frequency selection  
control. This method can be very useful if the  
amplifier is mounted in a location where you  
can’t see the front panel markings easily.  
This is completely independent of the  
1) “Full-Range”: This is a pass-through mode  
for the preamp output, delivering the same  
TJHOBMꢀUIBUꢀJTꢀCFJOHꢀGFEꢀUPꢀUIFꢀi"NQMJGJFSꢀ*OQVUꢀ  
4FDUJPOwꢀ *GꢀUIFꢀJOQVUꢀTJHOBMꢀJTꢀGVMMꢆSBOHFꢁꢀ  
the preamp output will be full-range). This  
TJHOBMꢀJTꢀOPUꢀBGGFDUFEꢀCZꢀUIFꢀiAdvanced Bass  
ControlwꢀQSPDFTTJOHꢀTFMFDUFEꢀGPSꢀUIFꢀBNQMJGJFSꢂ  
amplifier’s internal filter and allows the user to  
match, stagger or overlap the subwoofer low-pass  
filter frequency of the amplifier crossover with  
the output filter’s frequency for precise control  
BOEꢀPQUJNJ[FEꢀNJECBTTꢀQFSGPSNBODFꢂ  
If you would like to select the filter frequency  
with a higher level of precision, consult  
Appendix C: Chart A-2 (page 16) of this manual.  
(dB)  
Amp LP Filter  
A
0
|
Mode Slope  
Input Vo  
+13  
|
|
|
Off 12dB 24dB  
Low  
+15  
65  
55  
45  
40  
Filter Freq. (Hz)  
80  
100  
200  
nced  
rol  
2) “Amp Filter”: The preamp output delivers  
the same signal that is feeding the 1000/1v2’s  
amplifier section, including all the processing  
JOEVDFEꢀCZꢀUIFꢀiAmp LP FilterwꢀBOEꢀ  
iAdvanced Bass ControlwꢀTFDUJPOTꢂꢀꢀ5IJTꢀ  
is primarily used for running additional  
ꢇꢅꢅꢅꢋꢇWꢃꢌTꢀJOꢀBꢀi4MBWFwꢀDPOGJHVSBUJPOꢀ  
GSPNꢀUIFꢀi.BTUFSwꢀBNQMJGJFSꢂꢀ'PSꢀEFUBJMFEꢀ  
JOGPSNBUJPOꢀPOꢀi.BTUFSꢋ4MBWFwꢀDPOGJHVSBUJPOTꢁꢀ  
TFFꢀ"QQFOEJYꢀ%ꢀ QBHFꢀꢇꢍꢉꢂꢀ*GꢀUIFꢀiOutput  
ModewꢀTXJUDIꢀJTꢀJOꢀUIFꢀiAmp Filterwꢀ  
QPTJUJPOꢀBOEꢀUIFꢀiAmp LP FilterwꢀTXJUDIꢀ  
JTꢀJOꢀUIFꢀiOffwꢀQPTJUJPOꢁꢀUIFSFꢀXJMMꢀCFꢀOPꢀ  
output from the preamp output jacks. The  
JOEFQFOEFOUꢀPVUQVUꢀGJMUFSꢀDPOUSPMTꢀ iFilter  
SlopewꢁꢀiFilter FreqwꢀBOEꢀiFilter Modewꢉꢀ  
BSFꢀJOBDUJWFꢀJOꢀiAmp FilterwꢀNPEFꢂ  
Left  
CAUTION  
!!  
The signal level of the “Preamp Output” is  
always low level regardless of the voltage  
applied to this amplifier’s inputs and the  
setting chosen on this amplifier’s “Input  
Range” switch. All “Slave” amplifiers should  
have their switches set to “Low”. See Appendix  
D (page 18) for details.  
1) Filter Operation: The low-pass filter in the  
ꢇꢅꢅꢅꢋꢇWꢃꢀJTꢀGVMMZꢀWBSJBCMFꢀCFUXFFOꢀꢈꢅꢀ)[ꢀBOEꢀ  
ꢃꢅꢅꢀ)[ꢀWJBꢀUIFꢀi'ilter Freq.wꢀDPOUSPMꢀLOPCꢀ  
and features the ability to select between a  
NPEFSBUFꢀi12dBwꢀQFSꢀPDUBWFꢀPSꢀBꢀTUFFQꢀi24dBwꢀ  
QFSꢀPDUBWFꢀTMPQFꢀWJBꢀUIFꢀiMode/SlopewꢀTXJUDIꢂꢀ  
%FQFOEJOHꢀPOꢀUIFꢀTVCXPPGFSꢀTZTUFNꢀBOEꢀUIFꢀ  
vehicle, different slopes may be required to  
produce a smooth transition to the mid-bass  
speakers in the system. Experiment to find  
the slope which best matches the acoustic  
requirements of your system.  
3) Defeating the Amplifier Filter: The Low-  
Pass filter can also be defeated completely,  
CZꢀTXJUDIJOHꢀUIFꢀiMode/SlopewꢀTXJUDIꢀUPꢀUIFꢀ  
iOffwꢀQPTJUJPOꢂꢀ5IJTꢀJTꢀVTFGVMꢀJGꢀZPVꢀBSFꢀVTJOHꢀ  
an external active crossover in the system.  
Keep in mind that turning the internal  
DSPTTPWFSꢀPGGꢀBMTPꢀEFGFBUTꢀUIFꢀiAdvanced Bass  
ControlwꢀTFDUJPOꢀQSPDFTTJOHꢀ TFFꢀQBHFꢀꢎꢀGPSꢀ  
details). With the internal crossover turned  
off, the 1000/1v2’s upper frequency response  
MJNJUꢀJTꢀꢃꢄꢅꢀ)[ꢁꢀEVFꢀUPꢀJUTꢀCBTTꢆTQFDJGJDꢀ  
$MBTTꢀ%ꢀEFTJHOꢂ  
8 | JL Audio - 1000/1v2 Owner’s Manual  
9
 
IMPORTANT  
!
ADVANCED BASS CONTROL SECTION  
The 1000/1v2 includes a versatile bass  
processing section consisting of two  
primary components: a fully variable,  
24 dB per octave infrasonic filter and a  
QBSBNFUSJDꢁꢀTJOHMFꢆCBOEꢀFRVBMJ[FSꢂ  
SUBWOOFER OUTPUT  
2) Parametric Bass Equalizer: The parametric  
FRVBMJ[FSꢀBMMPXTꢀUIFꢀVTFSꢀUPꢀTFMFDUꢀUIFꢀDFOUFSꢀ  
frequency of the boost band as well as the  
CBOEXJEUIꢀ iQwꢉꢀPGꢀUIFꢀCPPTUꢀCBOEꢂꢀ5IFꢀiQ"  
control selects the bandwidth of the boost  
around the center frequency. Lower numbers  
pertain to wider bandwidths while higher  
number pertain to narrower bandwidths.  
5IFꢀiCenter FreqꢂwꢀDPOUSPMꢀTFMFDUTꢀUIFꢀDFOUFSꢀ  
frequency of the boost bandwidth within  
BꢀSBOHFꢀPGꢀꢃꢅꢀꢆꢀꢍꢅꢀ)[ꢂꢀ*GꢀZPVꢀXPVMEꢀMJLFꢀUPꢀ  
select the filter frequency with a higher level  
of precision, consult Appendix C: Chart A-4  
QBHFꢀꢇꢑꢉꢀPGꢀUIJTꢀNBOVBMꢂꢀ5IFꢀiBoostwꢀDPOUSPMꢀ  
determines how much boost (in dB) you are  
adding to the bass signal. A range of 0 - 15dB  
PGꢀCPPTUꢀJTꢀBWBJMBCMFꢂꢀ5IFꢀiRemote Bass Portwꢀ  
allows the connection of an optional remote  
boost knob (the RBC-1) that can be mounted  
in the front of the vehicle. This optional  
DPOUSPMꢀUBLFTꢀUIFꢀQMBDFꢀPGꢀUIFꢀiBoostwꢀLOPCꢀPOꢀ  
the amplifier when connected and bypasses the  
iBoostwꢀDPOUSPMꢀPOꢀUIFꢀBNQMJGJFSꢂ  
The 1000/1v2 employs JL Audio’s exclusive  
Regulated, Intelligent Power Supply (R.I.P.S.)  
design. This sophisticated power supply  
allows the amplifier to produce its optimum  
power (1000 watts x 1) over a wide range of  
speaker impedances.  
Speaker loads below 1.5Ω nominal are not  
recommended and may cause the amplifier  
output to distort excessively.  
Speaker connections to the 1000/1v2 are  
straightforward and take place at the far right of  
the front panel. You will notice that there are two  
i+wꢀQPTJUJWFꢀDPOOFDUJPOTꢀBOEꢀUXPꢀiwꢀOFHBUJWFꢀ  
connections. This is to facilitate multiple speaker  
wiring. The two positive and two negative  
connections are connected in parallel inside  
the amplifier. Connecting two speakers, each to  
one set of positive and negative terminals, will  
result in a parallel speaker connection. If only  
connecting one pair of speaker wires, it is not  
necessary to use both sets of connections.  
%PꢀOPUꢀDIBTTJTꢀHSPVOEꢀBOZꢀTQFBLFSTꢀDPOOFDUFEꢀ  
UPꢀUIJTꢀPSꢀBOZꢀPUIFSꢀ+-ꢀ"VEJPꢀBNQMJGJFSꢂꢀ%PJOHꢀTPꢀ  
will cause the amplifier to go into protection and  
mute the output.  
Infrasonic Filter  
Mode  
“Q”  
1.6  
Center Freq.  
45  
Boost (dB)  
+10  
1.1  
0.7  
0.5  
2.7 35  
55 +4  
70  
80  
+13  
Subwoofer Output  
25  
Output Polarity  
|
Off On  
4.3 20  
0
+15  
30  
|
Normal Reversed  
Bass EQ  
25  
18  
15  
Infrasonic Freq. (Hz)  
40  
50  
60  
Advanced  
Bass  
Control  
|
Off On  
MONO OUTPUT ONLY  
Remote Bass Port  
1) “Infrasonic Filter”: The infrasonic filter is a  
24 dB/octave high-pass filter, with a fully  
Unlike conventional amplifiers that require  
a specific impedance to produce optimum  
power, the R.I.P.S.-equipped 1000/1v2 gives  
you the freedom to use a variety of subwoofer  
configurations that achieve final nominal  
impedances between  
WBSJBCMFꢀDVUPGGꢀGSFRVFODZꢀCFUXFFOꢀꢇꢄꢀꢆꢀꢏꢅꢀ)[ꢂꢀ  
8IFOꢀTFUꢀBUꢀGSFRVFODJFTꢀMPXFSꢀUIBOꢀꢐꢅꢀ)[ꢁꢀJUꢀ  
conserves amplifier power without audibly  
affecting the quality of the sub-bass output. If  
TFUꢀBUꢀGSFRVFODJFTꢀIJHIFSꢀUIBUꢀꢐꢅꢀ)[ꢁꢀUIFSFꢀXJMMꢀ  
be an audible effect, but one which may be  
desirable for SPL competition purposes or curve  
shaping of a bottom-heavy system. With ported  
enclosures, the use of the infrasonic filter is  
highly recommended to protect the speaker(s)  
from excessive excursion below box tuning.  
With sealed enclosures, the use of the filter is  
less necessary, but can still help protect the  
speaker system. If you would like to select the  
infrasonic filter frequency with a higher level of  
precision, consult Appendix C: Chart A-3 (page  
17) of this manual. The infrasonic filter can be  
DPNQMFUFMZꢀEFGFBUFEꢀCZꢀTFMFDUJOHꢀUIFꢀiOffwꢀ  
QPTJUJPOꢀPOꢀUIFꢀiModewꢀTXJUDIꢂꢀ5IJTꢀCZQBTTFTꢀ  
all signal from flowing through the circuit.  
The 1000/1v2’s speaker connectors are  
designed to accept 12 AWG – 8 AWG wire.  
To connect the speaker wires to the amplifier,  
first back out the set screws on the top of the  
amplifier, using the supplied 2.5 mm hex  
wrench. Strip 1/2 inch (12 mm) of insulation  
from each wire and insert the bare wire end  
into the receptacles on the front panel of the  
amplifier, seating them firmly so that no bare  
wire is exposed. While holding each wire in place,  
tighten each set screw firmly, taking care not to  
strip the head of the screw and making sure that  
the wire is firmly gripped by the set screw.  
1.5 – 4Ω (without sacrificing power output or  
sound quality).  
The operation of the R.I.P.S. circuitry is  
entirely automatic and adjusts itself every time  
the amplifier is turned on according to the lowest  
impedance present at the speaker load. There are  
no user controls to configure. The system  
operates through multiple stages of impedance  
PQUJNJ[BUJPOꢁꢀDIPPTJOHꢀUIFꢀTUBHFꢀNPTUꢀBQQSPQSJBUFꢀ  
to the actual impedance of the speaker(s) you  
connect to it.  
IMPORTANT  
!
The Advanced Bass Control” section will only  
operate when the amplifier’s filter is activated  
with the Amp LP Filter” switch in the “12dB”  
or “24dB” position. It will not work with this  
switch in the “Off” position. This is to prevent  
cascading the processing of multiple amplifiers  
when configured in a master/Slave  
arrangement as shown in Appendix D (page  
18). If you are using an external active  
IMPORTANT  
IMPORTANT  
!
!
crossover and would like to use the “Advanced  
Bass Control” features, set the Amp LP Filter”  
switch on “12dB” and rotate the frequency  
selection knob fully clockwise to the “200 Hz”  
position. This will activate the “LF Boost” and  
“Infrasonic Filter” controls without  
If you connect a load higher than 4Ω nominal  
to the 1000/1v2, power will drop by half with  
every doubling of impedance above 4Ω. If you  
connect a load lower than 1.5Ω nominal to the  
1000/1v2, the amplifier protection circuitry  
activates a “safe” mode which reduces amplifier  
power to protect the circuitry from failure (the  
yellow LED on the top of the amplifier will  
light to indicate that this has happened). See  
page 12 for details.  
Do NOT attempt to “bridge” two 1000/1v2’s or  
combine their output to a single load in any  
manner. Doing so will damage the amplifier(s).  
IMPORTANT  
!
significantly affecting the crossover point  
selected by the external active crossover.  
Before reconnecting the battery ground and  
turning the system on, verify that all control  
settings on the amplifier are set according to  
the needs of the system.  
10 | JL Audio - 1000/1v2 Owner’s Manual  
11  
 
OUTPUT POLARITY SWITCH  
STATUS INDICATOR LIGHTS /  
PROTECTION CIRCUITRY  
There are three status indicator lights on the  
top of the amplifier. These are as follows:  
SERVICING YOUR JL AUDIO AMPLIFIER  
If your amplifier fails or malfunctions, please  
SFUVSOꢀJUꢀUPꢀZPVSꢀBVUIPSJ[FEꢀ+-ꢀ"VEJPꢀEFBMFSꢀTPꢀ  
that it may be sent in to JL Audio for service.  
There are no user serviceable parts or fuses inside  
the amplifier. The unique nature of the circuitry  
in the JL Audio amplifiers requires specifically  
USBJOFEꢀTFSWJDFꢀQFSTPOOFMꢂꢀ%PꢀOPUꢀBUUFNQUꢀ  
to service the amplifier yourself or through  
VOBVUIPSJ[FEꢀSFQBJSꢀGBDJMJUJFTꢂꢀ5IJTꢀXJMMꢀOPUꢀPOMZꢀ  
void the warranty, but may result in the creation  
of more problems within the amplifier.  
%FQFOEJOHꢀPOꢀUIFꢀEJTUBODFꢀSFMBUJPOTIJQꢀ  
of the mid-bass speakers and the subwoofers  
in a system, it can be desirable to reverse  
the polarity of the subwoofer system in  
order to produce a better transition between  
subwoofer and mid-bass speaker output.  
5IFꢀiOutput PolaritywꢀTXJUDIꢀBMMPXTꢀZPVꢀ  
to peform this polarity inversion without  
removing any wires. Simply flip the switch  
GSPNꢀUIFꢀiNormalwꢀUPꢀUIFꢀiReversedwꢀQPTJUJPOꢂꢀ  
Experiment with this switch to determine  
which polarity produces the best overall  
bass performance in your system, listening  
in particular to the mid-bass smoothness  
and impact to make your determination.  
If you are unsure as to the cause of the  
problem, please consult your JL Audio dealer or a  
qualified automotive electrical specialist.  
Keep in mind that any large amplifier, like the  
1000/1, places a very heavy demand on a vehicle’s  
charging system when operated at its limits.  
Vehicles with weak charging systems may need  
to be serviced and/or upgraded to provide ample  
current to a system including a 1000/1.  
There is only one condition that will shut down  
BOꢀVOEBNBHFEꢀꢇꢅꢅꢅꢋꢇWꢃꢀDPNQMFUFMZyꢀ*GꢀCBUUFSZꢀ  
voltage drops below 10 volts, the entire amplifier  
XJMMꢀTIVUꢀJUTFMGꢀPGGꢂꢀ5IFꢀHSFFOꢀiPowerwꢀJOEJDBUPSꢀ  
on the top of the amplifier will turn off when this  
occurs. The amplifier will turn back on when  
voltage climbs back above 10 volts. This may  
happen in a rapid cycle when bass-heavy program  
material causes a weak charging system to dip  
below 10 volts momentarily. If this is happening  
in your system, have your charging system  
inspected to make sure it is working properly.  
For information on troubleshooting this  
1)iPowerw (Green): lights to indicate that the  
amplifier is turned on and operating normally.  
2)ꢀi Thermalw (Red): lights to indicate that  
the amplifier has exceeded its safe operating  
temperature, putting the amplifier into a self-  
protection mode, which reduces the power  
output of the amplifier. The red light will shut  
off and the amplifier will return to normal,  
full-power operating mode if the heat sink  
temperature drops back to a safe level.  
If you have any questions about the installation or  
setup of the amplifier not covered in this manual,  
please contact your dealer or technical support.  
3) iLow Ωw (Amber): lights to indicate that the  
impedance of the speaker load connected  
to the amplifier is lower than the optimum  
impedance load range for the amplifier. When  
this light is on, a protection circuit engages  
and reduces the power output of the amplifier.  
The amber indicator will also light when a  
short-circuit is detected in the speaker wiring  
(this can be a short between the positive and  
negative speaker wires or between either  
speaker wire and the vehicle chassis).  
Subwoofer Output  
Output Polarity  
|
Normal Reversed  
JL Audio Technical Support:  
(954) 443-1100  
9:00 AM – 5:30 PM (Eastern Time Zone)  
Monday - Friday  
MONO OUTPUT ONLY  
amplifier, refer to Appendix E (page 21).  
4) “Low V” (Blue): lights to indicate any  
dip in supply voltage below 8 volts. The  
CMVFꢀ-&%ꢀXJMMꢀSFNBJOꢀMJUꢀMPOHFSꢀUIBOꢀUIFꢀ  
dip duration to better alert the user to the  
problem. This will be accompanied by a  
shutdown of the amplifier (green LED  
will shut off) and a total loss of output.  
Once the voltage rises above 9 volts, the  
amplifier will turn itself on. Because voltage  
dips occur in rapid succession, the typical  
behavior will be a cycling of the amplifier  
on and off, accompanied by flashing of the  
“Low V”ꢀCMVFꢀ-&%ꢂꢀ*GꢀUIJTꢀJTꢀIBQQFOJOHꢀJOꢀ  
your system, you will need to investigate  
the cause of the voltage problem. This could  
be a bad ground on the amplifier, battery  
or alternator OR a faulty battery/charging  
system OR a problem with a fuse holder or  
wire connection.  
12 | JL Audio - 1000/1v2 Owner’s Manual  
13  
 
APPENDIX A:  
APPENDIX B:  
Input Sensitivity Level Setting  
5) Using the chart on this page, determine the target  
voltage for input sensitivity adjustment according  
to the nominal impedance of the speaker system  
connected to the amplifier outputs.  
6) Verify that you have disconnected the speakers  
before proceeding. Play a track with an  
appropriate sine wave (within the frequency  
range to be amplified by the 1000/1v2) at 3/4  
source unit volume.  
7) Connect the AC voltmeter to the speaker output  
connectors of the amplifier. If the channel  
pair is operating in stereo, it is only necessary  
to measure one channel. If bridged, make sure  
you test the voltage at the correct connectors  
(L+ and R–).  
8) Increase the iInput Sens.w control until the  
target voltage is observed with the voltmeter.  
9) Once you have adjusted the 1000/1v2 to  
its maximum low-distortion output level,  
reconnect the speaker(s). The iInput Sens.w  
control can now be adjusted downward if the  
amplifier requires attenuation to achieve the  
desired system balance.  
1000/1v2 Specifications  
+-ꢀ"VEJPꢀBNQMJGJFSTꢀVUJMJ[JOHꢀUIFꢀ3FHVMBUFEꢀ  
Intelligent Power Supply (R.I.P.S.) allow  
delivery of their rated power when connected  
to any load impedance from 1.5 - 4Ω per  
channel and when connected to a charging  
system with any voltage from 11 - 14.5V. This  
design is beneficial for many reasons. One of  
these reasons is ease of setup. Because each  
JL Audio amplifier will always deliver the  
same amount of power within its operational  
range of impedances and supply voltages, the  
maximum, unclipped output is very predictable.  
This makes setting the gain structure via the  
input sensitivity controls very simple. Following  
the directions below will allow the user to adjust  
the input sensitivity of the amplifier(s) simply  
and easily in just a few minutes using equipment  
which is commonly available in installation bays.  
General Specifications:  
Recommended Fuse Value: 100A  
Recommended Fuse Type: ANL  
Input Section:  
Input Type: Differential-balanced with RCA jack inputs  
Input Range: Switchable from 200mV - 2V RMS to  
800mV - 8V RMS  
Amplifier Section:  
Amplifier Topology: H-Bridge, Class D Mono  
with impedance optimization and patented  
discrete drive circuitry  
Power Supply: Pulse width modulation-regulated  
switching power supply  
Rated Power: 1000W RMS x 1 @ 1.5 - 4Ω (11 - 14.5V)  
THD at Rated Power: <0.05% @ 4Ω, 50 Hz  
Signal to Noise Ratio: >95 dB referred to rated power  
(A-weighted, 20 Hz - 20 kHz noise bandwidth)  
Frequency Response: 5 - 250 Hz (+0, -3 dB)  
Damping Factor: >500 @ 4Ω/50 Hz, >250 @ 2Ω/50 Hz  
Necessary Equipment  
tꢀ%JHJUBMꢀ"$ꢀ7PMUNFUFS  
tꢀ$%ꢀXJUIꢀBꢀTJOFꢆXBWFꢀUFTUꢀUPOFꢀSFDPSEFEꢀBUꢀ  
0 dB reference level in the frequency range  
to be amplified for that set of channels  
ꢄꢅꢀ)[ꢀGPSꢀTVCXPPGFSꢀDIBOOFMTꢁꢀꢇꢀL)[ꢀGPSꢀ  
a midrange application). The CleanSweep®  
$BMJCSBUJPOꢀ%JTDꢀDPOUBJOTꢀUIFꢀBQQSPQSJBUFꢀ  
test tones and is available for sale at  
http://store.jlaudio.comꢀ%PꢀOPUꢀVTFꢀBUUFOVBUFEꢀ  
test tones (-10 dB, -20 dB, etc.).  
Crossover Section:  
IMPORTANT  
!
Amplifier Low-Pass Filter: State-variable, 12 dB/octave  
Butterworth or 24 dB/octave Linkwitz-Riley with  
continuously variable cutoff frequency selection  
from 40 - 200 Hz, defeatable  
Do not increase any “Input Sens.” setting  
for any amplifier channel or channel  
pair in the system beyond the maximum  
level established during this procedure.  
Doing so will result in audible distortion  
and possible speaker damage.  
Preamp Output:  
2-Channel, with fully independent, state-variable,  
12 dB/octave Butterworth or 24 dB/octave Linkwitz-Riley  
filter with continuously variable cutoff frequency selection  
from 40 - 200 Hz, defeatable  
The Nine-Step Procedure  
1)%JTDPOOFDUꢀUIFꢀTQFBLFS TꢉꢀGSPNꢀUIFꢀ  
amplifier’s speaker output connectors.  
2) Turn off all processing (bass/treble, loudness,  
EQ, etc.) on the source unit, processors (if  
used) and amplifier. Set fader control to center  
position and subwoofer level control to 3/4 of  
maximum (if used to feed the 1000/1v2).  
3) Switch the iInput Voltagew switch to iLoww  
and turn the iInput Sens.w control all the  
way down.  
It will be necessary to re-adjust the  
iInput Sens.w for the affected channels if any  
FRVBMJ[FSꢀCPPTUꢀJTꢀBDUJWBUFEꢀBGUFSꢀTFUUJOHꢀUIFꢀ  
iInput Sens.w with this procedure. This applies  
to any EQ boost circuit, including source unit  
tone controls or EQ circuits. EQ cuts will not  
require re-adjustment.  
Advanced Bass Control Section:  
Parametric EQ: Single-band, fully parametric equalizer  
with “Q” adjustment from 0.5 - 4.0, center frequency  
adjustment from 20 - 80 Hz, boost adjustment from 0 to  
+15 dB and port for optional remote bass boost control  
(RBC-1), defeatable  
Nom. Impedance  
Target AC Voltage  
Infrasonic Filter: Fully variable, 24 dB/octave Butterworth  
high-pass filter, cutoff frequency adjustable from 15 - 60  
Hz, defeatable  
63.2V  
54.7V  
44.7V  
38.7V  
(or higher)  
4) Set the source unit volume to 3/4 of full  
volume. This will allow for reasonable gain  
overlap with moderate clipping at full volume.  
3Ω  
2Ω  
Dimensions (LxWxH):  
1.5Ω  
19.7" x 9.25" x 2.36" ( mm x 235mm x 60mm)  
Due to ongoing product development, all specifications are subject to  
change without notice.  
14 | JL Audio - 1000/1v2 Owner’s Manual  
15  
 
APPENDIX C:  
Precise Frequency Selection Chart  
CHART A-2  
CHART A-3  
CHART A-4  
CHART A-1  
PREAMP OUTPUT SECTION  
INFRASONIC FILTER  
Panel  
EQ CENTER FREQUENCY  
AMPLIFIER LOW-PASS FILTER  
Detent  
Number  
Panel  
Marking  
Actual  
Freq.  
Detent  
Number  
Actual  
Freq.  
Detent  
Number  
Panel  
Marking  
Actual  
Freq.  
Detent  
Panel  
Marking  
Actual  
Freq.  
Marking  
Number  
Full counter-clockwise: 41  
01 . . . . . . . . . . . . . . . . . . . . . . . . . . . .41  
02 . . . . . . . . . . . . . . . . . . . . . . . . . . . .41  
03 . . . . . . . . . . . . . . . . . . . . . . . . . . . .41  
04 . . . . . . . . . . . “40” . . . . . . . . . . . .42  
05 . . . . . . . . . . . . . . . . . . . . . . . . . . . .42  
06 . . . . . . . . . . . . . . . . . . . . . . . . . . . .43  
07 . . . . . . . . . . . . . . . . . . . . . . . . . . . .44  
08 . . . . . . . . . . . “45” . . . . . . . . . . . .45  
09 . . . . . . . . . . . . . . . . . . . . . . . . . . . .47  
10 . . . . . . . . . . . . . . . . . . . . . . . . . . . .48  
11 . . . . . . . . . . . . . . . . . . . . . . . . . . . .49  
12 . . . . . . . . . . . . . . . . . . . . . . . . . . . .51  
13 . . . . . . . . . . . . . . . . . . . . . . . . . . . .53  
14 . . . . . . . . . . . “55” . . . . . . . . . . . .54  
15 . . . . . . . . . . . . . . . . . . . . . . . . . . . .56  
16 . . . . . . . . . . . . . . . . . . . . . . . . . . . .58  
17 . . . . . . . . . . . . . . . . . . . . . . . . . . . .60  
18 . . . . . . . . . . . . . . . . . . . . . . . . . . . .62  
19 . . . . . . . . . . . “65” . . . . . . . . . . . .64  
20 . . . . . . . . . . . . . . . . . . . . . . . . . . . .67  
21 . . . . . . . . . . . . . . . . . . . . . . . . . . . .69  
22 . . . . . . . . . . . . . . . . . . . . . . . . . . . .72  
23 . . . . . . . . . . . . . . . . . . . . . . . . . . . .75  
24 . . . . . . . . . . . “80” . . . . . . . . . . . .78  
25 . . . . . . . . . . . . . . . . . . . . . . . . . . . .82  
26 . . . . . . . . . . . . . . . . . . . . . . . . . . . .86  
27 . . . . . . . . . . . . . . . . . . . . . . . . . . . .90  
28 . . . . . . . . . . . . . . . . . . . . . . . . . . . .95  
29 . . . . . . . . . . .100”. . . . . . . . . . . 100  
30 . . . . . . . . . . . . . . . . . . . . . . . . . . . 107  
31 . . . . . . . . . . . . . . . . . . . . . . . . . . . 113  
32 . . . . . . . . . . . . . . . . . . . . . . . . . . . 122  
33 . . . . . . . . . . . . . . . . . . . . . . . . . . . 131  
34 . . . . . . . . . . . . . . . . . . . . . . . . . . . 143  
35 . . . . . . . . . . . . . . . . . . . . . . . . . . . 156  
36 . . . . . . . . . . .200”. . . . . . . . . . . 169  
37 . . . . . . . . . . . . . . . . . . . . . . . . . . . 186  
38 . . . . . . . . . . . . . . . . . . . . . . . . . . . 192  
39 . . . . . . . . . . . . . . . . . . . . . . . . . . . 197  
Full-clockwise : 197  
Full counter-clockwise: 14  
01 . . . . . . . . . . . . . . . . . . . . . . . . . . . .14  
02 . . . . . . . . . . . . . . . . . . . . . . . . . . . .14  
03 . . . . . . . . . . . . . . . . . . . . . . . . . . . .14  
04 . . . . . . . . . . . “15” . . . . . . . . . . . .14  
05 . . . . . . . . . . . . . . . . . . . . . . . . . . . .15  
06 . . . . . . . . . . . . . . . . . . . . . . . . . . . .15  
07 . . . . . . . . . . . . . . . . . . . . . . . . . . . .16  
08 . . . . . . . . . . . “18” . . . . . . . . . . . .17  
09 . . . . . . . . . . . . . . . . . . . . . . . . . . . .17  
10 . . . . . . . . . . . . . . . . . . . . . . . . . . . .18  
11 . . . . . . . . . . . . . . . . . . . . . . . . . . . .19  
12 . . . . . . . . . . . . . . . . . . . . . . . . . . . .20  
13 . . . . . . . . . . . . . . . . . . . . . . . . . . . .20  
14 . . . . . . . . . . . “25” . . . . . . . . . . . .21  
15 . . . . . . . . . . . . . . . . . . . . . . . . . . . .22  
16 . . . . . . . . . . . . . . . . . . . . . . . . . . . .24  
17 . . . . . . . . . . . . . . . . . . . . . . . . . . . .25  
18 . . . . . . . . . . . . . . . . . . . . . . . . . . . .27  
19 . . . . . . . . . . . . . . . . . . . . . . . . . . . .28  
20 . . . . . . . . . . . “30” . . . . . . . . . . . .30  
21 . . . . . . . . . . . . . . . . . . . . . . . . . . . .33  
22 . . . . . . . . . . . . . . . . . . . . . . . . . . . .35  
23 . . . . . . . . . . . . . . . . . . . . . . . . . . . .39  
24 . . . . . . . . . . . . . . . . . . . . . . . . . . . .42  
25 . . . . . . . . . . . “40” . . . . . . . . . . . .47  
26 . . . . . . . . . . . . . . . . . . . . . . . . . . . .50  
27 . . . . . . . . . . . . . . . . . . . . . . . . . . . .51  
28 . . . . . . . . . . . . . . . . . . . . . . . . . . . .54  
29 . . . . . . . . . . . . . . . . . . . . . . . . . . . .56  
30 . . . . . . . . . . . . . . . . . . . . . . . . . . . .56  
31 . . . . . . . . . . . “50” . . . . . . . . . . . .57  
32 . . . . . . . . . . . . . . . . . . . . . . . . . . . .58  
33 . . . . . . . . . . . . . . . . . . . . . . . . . . . .58  
34 . . . . . . . . . . . . . . . . . . . . . . . . . . . .58  
35 . . . . . . . . . . . . . . . . . . . . . . . . . . . .59  
36 . . . . . . . . . . . “60” . . . . . . . . . . . .60  
37 . . . . . . . . . . . . . . . . . . . . . . . . . . . .61  
38 . . . . . . . . . . . . . . . . . . . . . . . . . . . .61  
39 . . . . . . . . . . . . . . . . . . . . . . . . . . . .61  
Full-clockwise : 61  
Full counter-clockwise: 22  
01 . . . . . . . . . . . . . . . . . . . . . . . . . . . .22  
02 . . . . . . . . . . . . . . . . . . . . . . . . . . . .22  
03 . . . . . . . . . . . . . . . . . . . . . . . . . . . .22  
04 . . . . . . . . . . . “20” . . . . . . . . . . . .22  
05 . . . . . . . . . . . . . . . . . . . . . . . . . . . .22  
06 . . . . . . . . . . . . . . . . . . . . . . . . . . . .24  
07 . . . . . . . . . . . . . . . . . . . . . . . . . . . .24  
08 . . . . . . . . . . . “25” . . . . . . . . . . . .25  
09 . . . . . . . . . . . . . . . . . . . . . . . . . . . .26  
10 . . . . . . . . . . . . . . . . . . . . . . . . . . . .27  
11 . . . . . . . . . . . . . . . . . . . . . . . . . . . .28  
12 . . . . . . . . . . . . . . . . . . . . . . . . . . . .30  
13 . . . . . . . . . . . . . . . . . . . . . . . . . . . .31  
14 . . . . . . . . . . . “30” . . . . . . . . . . . .32  
15 . . . . . . . . . . . . . . . . . . . . . . . . . . . .34  
16 . . . . . . . . . . . . . . . . . . . . . . . . . . . .35  
17 . . . . . . . . . . . . . . . . . . . . . . . . . . . .38  
18 . . . . . . . . . . . . . . . . . . . . . . . . . . . .40  
19 . . . . . . . . . . . “40” . . . . . . . . . . . .42  
20 . . . . . . . . . . . . . . . . . . . . . . . . . . . .45  
21 . . . . . . . . . . . . . . . . . . . . . . . . . . . .48  
22 . . . . . . . . . . . . . . . . . . . . . . . . . . . .51  
23 . . . . . . . . . . . . . . . . . . . . . . . . . . . .56  
24 . . . . . . . . . . . “60” . . . . . . . . . . . .61  
25 . . . . . . . . . . . . . . . . . . . . . . . . . . . .67  
26 . . . . . . . . . . . . . . . . . . . . . . . . . . . .69  
27 . . . . . . . . . . . . . . . . . . . . . . . . . . . .72  
28 . . . . . . . . . . . . . . . . . . . . . . . . . . . .75  
29 . . . . . . . . . . . “75” . . . . . . . . . . . .76  
30 . . . . . . . . . . . . . . . . . . . . . . . . . . . .77  
31 . . . . . . . . . . . . . . . . . . . . . . . . . . . .77  
32 . . . . . . . . . . . . . . . . . . . . . . . . . . . .78  
33 . . . . . . . . . . . . . . . . . . . . . . . . . . . .79  
34 . . . . . . . . . . . . . . . . . . . . . . . . . . . .80  
35 . . . . . . . . . . . . . . . . . . . . . . . . . . . .81  
36 . . . . . . . . . . . “80” . . . . . . . . . . . .81  
37 . . . . . . . . . . . . . . . . . . . . . . . . . . . .81  
38 . . . . . . . . . . . . . . . . . . . . . . . . . . . .81  
39 . . . . . . . . . . . . . . . . . . . . . . . . . . . .81  
Full-clockwise : 81  
Full counter-clockwise: 42  
01 . . . . . . . . . . . . . . . . . . . . . . . . . . . .42  
02 . . . . . . . . . . . . . . . . . . . . . . . . . . . .42  
03 . . . . . . . . . . . . . . . . . . . . . . . . . . . .42  
04 . . . . . . . . . . . “40” . . . . . . . . . . . .42  
05 . . . . . . . . . . . . . . . . . . . . . . . . . . . .43  
06 . . . . . . . . . . . . . . . . . . . . . . . . . . . .44  
07 . . . . . . . . . . . . . . . . . . . . . . . . . . . .46  
08 . . . . . . . . . . . “45” . . . . . . . . . . . .47  
09 . . . . . . . . . . . . . . . . . . . . . . . . . . . .49  
10 . . . . . . . . . . . . . . . . . . . . . . . . . . . .50  
11 . . . . . . . . . . . . . . . . . . . . . . . . . . . .52  
12 . . . . . . . . . . . . . . . . . . . . . . . . . . . .53  
13 . . . . . . . . . . . . . . . . . . . . . . . . . . . .55  
14 . . . . . . . . . . . “55” . . . . . . . . . . . .57  
15 . . . . . . . . . . . . . . . . . . . . . . . . . . . .58  
16 . . . . . . . . . . . . . . . . . . . . . . . . . . . .60  
17 . . . . . . . . . . . . . . . . . . . . . . . . . . . .63  
18 . . . . . . . . . . . . . . . . . . . . . . . . . . . .65  
19 . . . . . . . . . . . “65” . . . . . . . . . . . .67  
20 . . . . . . . . . . . . . . . . . . . . . . . . . . . .70  
21 . . . . . . . . . . . . . . . . . . . . . . . . . . . .73  
22 . . . . . . . . . . . . . . . . . . . . . . . . . . . .76  
23 . . . . . . . . . . . . . . . . . . . . . . . . . . . .79  
24 . . . . . . . . . . . “80” . . . . . . . . . . . .83  
25 . . . . . . . . . . . . . . . . . . . . . . . . . . . .87  
26 . . . . . . . . . . . . . . . . . . . . . . . . . . . .92  
27 . . . . . . . . . . . . . . . . . . . . . . . . . . . .96  
28 . . . . . . . . . . . . . . . . . . . . . . . . . . . 102  
29 . . . . . . . . . . .100”. . . . . . . . . . . 108  
30 . . . . . . . . . . . . . . . . . . . . . . . . . . . 114  
31 . . . . . . . . . . . . . . . . . . . . . . . . . . . 122  
32 . . . . . . . . . . . . . . . . . . . . . . . . . . . 131  
33 . . . . . . . . . . . . . . . . . . . . . . . . . . . 143  
34 . . . . . . . . . . . . . . . . . . . . . . . . . . . 157  
35 . . . . . . . . . . . . . . . . . . . . . . . . . . . 184  
36 . . . . . . . . . . .200”. . . . . . . . . . . 193  
37 . . . . . . . . . . . . . . . . . . . . . . . . . . . 198  
38 . . . . . . . . . . . . . . . . . . . . . . . . . . . 198  
39 . . . . . . . . . . . . . . . . . . . . . . . . . . . 198  
Full-clockwise : 198  
16 | JL Audio - 1000/1v2 Owner’s Manual  
17  
 
APPENDIX D:  
Master/Slave Configurations  
Here is the procedure for implementing a  
i.BTUFSꢋ4MBWFwꢀDPOGJHVSBUJPOꢊ  
3) The input sensitivity of the two amplifiers  
needs to be adjusted independently. To  
properly calibrate the amplifiers for  
4) If you would like to run a third amplifier  
JOꢀi4MBWFwꢀDPOGJHVSBUJPOꢁꢀTFMFDUꢀUIFꢀiFull-  
RangewꢀQPTJUJPOꢀPOꢀUIFꢀiOutput Modewꢀ  
TXJUDIꢀPGꢀUIFꢀGJSTUꢀi4MBWFwꢀBNQMJGJFSꢂꢀ5IFOꢁꢀ  
connect an RCA cable from the first  
i4MBWFwꢀBNQMJGJFSꢌTꢀQSFBNQꢀPVUQVUTꢀUPꢀUIFꢀ  
TFDPOEꢀi4MBWFwꢀBNQMJGJFSꢂꢀ"TꢀZPVꢀEJEꢀXJUIꢀ  
UIFꢀGJSTUꢀi4MBWFwꢀBNQMJGJFSꢁꢀTFUꢀUIFꢀTFDPOEꢀ  
i4MBWFwꢀBNQMJGJFSꢌTꢀiAmp LP FilterwꢀUPꢀUIFꢀ  
iOffwꢀQPTJUJPOꢂꢀ5IFOꢁꢀDBMJCSBUFꢀUIFꢀUIJSEꢀ  
BNQMJGJFSꢌTꢀiInput RangewꢀBOEꢀiInput  
Sens.wꢀDPOUSPMTꢀJOꢀUIFꢀTBNFꢀNBOOFSꢀBTꢀZPVꢀ  
did for the second amplifier.  
With the flexible on-board crossovers and  
processing incorporated into the 1000/1v2, it  
is possible to connect multiple 1000/1v2’s in a  
i.BTUFSꢋ4MBWFwꢀDPOGJHVSBUJPOꢁꢀXJUIꢀFBDIꢀBNQMJGJFSꢀ  
driving its own speaker system but controlled by  
the processing and filtering of only one amplifier.  
This is very useful when driving multiple  
subwoofers with multiple amplifiers.  
To create a Master/Slave configuration, first  
EFUFSNJOFꢀXIJDIꢀBNQMJGJFSꢀXJMMꢀCFꢀUIFꢀi.BTUFSwꢀ  
amplifier and connect the main input signal to  
that amplifier (from the source unit or from an  
PVUCPBSEꢀQSPDFTTPSꢉꢂꢀ5IJTꢀBNQMJGJFSꢌTꢀiAmp LP  
FilterwꢀTFDUJPOꢀBOEꢀiAdvanced Bass Controlwꢀ  
GFBUVSFTꢀXJMMꢀQSPDFTTꢀUIFꢀTJHOBMꢀGPSꢀUIFꢀi4MBWFwꢀ  
amplifier or amplifiers.  
ꢇꢉꢀ4FUꢀUIFꢀi.BTUFSwꢀBNQMJGJFSꢌTꢀiOutput Modewꢀ  
TXJUDIꢀUPꢀUIFꢀDFOUFSꢀiAmp FilterwꢀQPTJUJPOꢂꢀ  
This will send a parallel, mono-summed signal  
GSPNꢀUIFꢀi.BTUFSwꢀBNQMJGJFSꢌTꢀiAmp LP Filterwꢀ  
section to its preamp outputs.  
maximum, identical, clean output, please  
refer to Appendix A (page 14). After using this  
procedure, you can then adjust the level of the  
amplifiers by adjusting the input sensitivities  
downward, if the amplifiers require attenuation  
to achieve the desired system balance. If the  
input sensitivities are adjusted, the amplifiers  
must be recalibrated to ensure identical power  
output levels.  
ꢃꢉꢀ$POOFDUꢀBOꢀ3$"ꢀDBCMFꢀGSPNꢀUIFꢀi.BTUFSwꢀ  
amplifier’s preamp outputs to the main input  
PGꢀUIFꢀGJSTUꢀi4MBWFwꢀBNQMJGJFSꢂꢀ4FUꢀUIFꢀiSlavewꢀ  
BNQMJGJFSꢌTꢀiAmp LP FilterwꢀUPꢀUIFꢀiOffwꢀ  
position. This will defeat the LP filter and the  
CBTTꢀQSPDFTTJOHꢀPGꢀUIJTꢀi4MBWFwꢀBNQMJGJFSꢂ  
Note:ꢀ5IFꢀiInput RangewꢀTXJUDIꢀPOꢀBMMꢀi4MBWFwꢀ  
BNQMJGJFSTꢀOFFETꢀUPꢀCFꢀTFUꢀUPꢀiLowwꢁꢀFWFOꢀJGꢀ  
UIFꢀi.BTUFSwꢀBNQMJGJFSꢀJTꢀIJHIꢀWPMUBHFꢀBOEꢀJUTꢀ  
TXJUDIꢀJTꢀTFUꢀUPꢀiHighwꢂꢀ"MMꢀTJHOBMTꢀQBTTFEꢀPVUꢀ  
of the preamp outputs of the amplifier are  
DPNQBUJCMFꢀXJUIꢀUIFꢀiLowwꢀTFUUJOHꢀPOꢀUIFꢀiInput  
RangewꢀDPOUSPMꢂ  
Additional amplifiers may be added to this  
i.BTUFSꢋ4MBWFwꢀDPOGJHVSBUJPOꢀGPMMPXJOHꢀUIFꢀTBNFꢀ  
procedure as in step 4.  
Once you match the input sensitivities of  
BMMꢀUIFꢀBNQMJGJFSTꢁꢀZPVꢀDBOꢀVTFꢀUIFꢀi.BTUFSwꢀ  
BNQMJGJFSꢌTꢀiAmp LP FilterwꢀBOEꢀiAdvanced  
Bass ControlwꢀGFBUVSFTꢀUPꢀDPOUSPMꢀUIFꢀi4MBWFwꢀ  
amplifier(s). If the remote bass control (RBC-1) is  
VTFEꢁꢀJUꢀOFFEꢀPOMZꢀCFꢀDPOOFDUFEꢀUPꢀUIFꢀi.BTUFSwꢀ  
amplifier to control all the amplifiers in the  
i.BTUFSꢋ4MBWFwꢀDIBJOꢂ  
MASTER:  
ꢀ3FGFSFODFꢀUIFꢀEJBHSBNꢀTIPXJOHꢀBꢀi.BTUFSꢋ  
4MBWFwꢀDPOGJHVSBUJPOꢀXJUIꢀPOFꢀi.BTUFSwꢀ UPQꢀ  
BNQMJGJFSꢉꢀBOEꢀUXPꢀi4MBWFwꢀBNQMJGJFSTꢂꢀ4XJUDIFTꢀ  
BOEꢀDPOUSPMTꢀUIBUꢀBSFꢀEFGFBUFEꢀJOꢀUIFꢀi4MBWFwꢀ  
amplifiers are printed in gray.  
Preamp Output Section  
Infrasonic Filter  
Mode  
“Q”  
1.6  
Center Freq.  
45  
Boost (dB)  
+10  
Amp LP Filter Amplifier Input Section  
Subwoofer Output  
The Master amplifier’s  
|
Output Mode  
Filter Slope  
Mode Slope  
Input Voltage Input Sens.  
Output Polarity  
1.1  
0.7  
0.5  
2.7 35  
55 +4  
70  
80  
+13  
“Advanced Bass Controlsection  
is active and affects all three  
amplifiers equally.  
25  
|
|
|
|
|
|
|
|
Full Range Amp Filter Out Filter  
12dB 24dB  
Off On  
Off 12dB 24dB  
Low High  
Normal Reversed  
4.3 20  
0
+15  
65  
30  
65  
Filter Mode  
Bass EQ  
55  
45  
40  
Filter Freq. (Hz)  
85  
120  
200  
25  
18  
15  
Infrasonic Freq. (Hz)  
40  
50  
60  
55  
45  
40  
Filter Freq. (Hz)  
80  
100  
200  
Advanced  
Bass  
Control  
MONO OUTPUT ONLY  
|
|
LP HP  
Off On  
Left Output Right Output  
Remote Bass Port  
Left Ch.  
Right Ch.  
Connect Master 1000/1 Input to Signal Source  
Connect Master 1000/1 Preamp Output to Slave A 1000/1 Input  
SLAVE (A):  
Preamp Output Section  
Infrasonic Filter  
Mode  
“Q”  
1.6  
Center Freq.  
45  
Boost (dB)  
+10  
Amp LP Filter Amplifier Input Section  
Subwoofer Output  
This Slave amplifier’s  
|
Output Mode  
Filter Slope  
Mode Slope  
Input Voltage Input Sens.  
Output Polarity  
1.1  
0.7  
0.5  
2.7 35  
55 +4  
70  
80  
+13  
“Advanced Bass Controlsection  
and AMP LP Filter are inactive,  
but the Full-Range (pass-  
through) feature of itsPreamp  
Outputfeeds the input of the  
next Slave amplifier.  
25  
|
|
|
|
|
|
|
|
Full Range Amp Filter Out Filter  
12dB 24dB  
Off On  
Off 12dB 24dB  
Low High  
Normal Reversed  
4.3 20  
0
+15  
65  
30  
65  
Filter Mode  
Bass EQ  
Off | On  
55  
45  
40  
Filter Freq. (Hz)  
85  
120  
200  
25  
18  
15  
Infrasonic Freq. (Hz)  
40  
50  
60  
55  
45  
40  
Filter Freq. (Hz)  
80  
100  
200  
Advanced  
Bass  
Control  
MONO OUTPUT ONLY  
|
LP HP  
Left Output Right Output  
Remote Bass Port  
Left Ch.  
Right Ch.  
Connect Slave A 1000/1 Preamp Output to Slave B 1000/1 Input  
SLAVE (B):  
Preamp Output Section  
Infrasonic Filter  
Mode  
“Q”  
1.6  
Center Freq.  
45  
Boost (dB)  
+10  
Amp LP Filter Amplifier Input Section  
Subwoofer Output  
The last Slave amplifier’s  
“Advanced Bass Control”  
section, AMP LP Filter and  
“Preamp Output”  
|
Output Mode  
Filter Slope  
Mode Slope  
Input Voltage Input Sens.  
Output Polarity  
1.1  
0.7  
0.5  
2.7 35  
55 +4  
70  
80  
+13  
25  
|
|
|
|
|
|
|
|
Full Range Amp Filter Out Filter  
12dB 24dB  
Off On  
Off 12dB 24dB  
Low High  
Normal Reversed  
4.3 20  
0
+15  
65  
30  
65  
Filter Mode  
Bass EQ  
Off | On  
55  
45  
40  
Filter Freq. (Hz)  
85  
120  
200  
25  
18  
15  
Infrasonic Freq. (Hz)  
40  
50  
60  
55  
45  
40  
Filter Freq. (Hz)  
80  
100  
200  
Advanced  
Bass  
Control  
are inactive.  
MONO OUTPUT ONLY  
|
LP HP  
Left Output Right Output  
Remote Bass Port  
Left Ch.  
Right Ch.  
18 | JL Audio - 1000/1v2 Owner’s Manual  
19  
 
APPENDIX E: TROUBLE SHOOTING  
“How do I properly set the input sensitivity on my amplifier”  
Please refer to Appendix A (page 14) to set the input sensitivity for  
“My amplifier shuts off once in a while, usually at higher volumes”  
Check your voltage source and grounding point. The power supply  
maximum, low-distortion output.  
“My amplifier doesn’t turn on”  
of the 1000/1v2 will operate with charging system voltages  
down to 10V. Shutdown problems at higher volume levels  
can occur when the charging system voltage drops below  
10V. These dips can be of very short duration making them  
FYUSFNFMZꢀEJGGJDVMUꢀUPꢀEFUFDUꢀXJUIꢀBꢀDPNNPOꢀ%$ꢀWPMUNFUFSꢂꢀ  
To ensure proper voltage, inspect all wiring and termination  
points. It may also be necessary to upgrade the ground  
wire connecting the battery to the vehicle’s chassis and the  
power wire connecting the alternator to the battery. Many  
vehicles employ small (10 AWG - 6 AWG) wire to ground the  
battery to the vehicle’s chassis and to connect the alternator to  
the battery. To prevent voltage drops, these wires should be  
upgraded to 4 AWG when installing amplifier systems with  
main fuse ratings above 60A. Grounding problems are the  
leading cause of misdiagnosed amplifier “failures.”  
Check the fuse, not just visually, but with a continuity meter. It is  
possible for a fuse to have poor internal connections that  
cannot be found by visual inspection. It is best to take the  
fuse out of the holder for testing. If no problem is found with  
the fuse, inspect the fuse-holder.  
Check the integrity of the connections made to each of the  
i+12VDCwꢁꢀꢀiGroundwꢁꢀꢀBOEꢀiRemotewꢀUFSNJOBMT. Ensure  
that no wire insulation is pinched by the terminal set screw  
and that each connection is tight.  
Check to make sure there is +12V at the “Remote” connection of the  
amplifier. In some cases, the turn-on lead from the source unit  
is insufficient to turn on multiple devices and the use of a relay  
is required. To test for this problem, jump the i+12VDCw wire  
to the iRemotew terminal to see if the amplifier turns on.  
“I get a distorted / attenuated sound coming out of the speaker(s)”  
Check the speaker wires for a possible short, either between the  
“My amplifier turns on, but there is no output”  
Check the input signal using an AC voltmeter to measure the  
voltage from the source unit while an appropriate test tone is  
played through the source unit (disconnect the input cables  
from the amplifier prior to this test). The frequency used  
should be in the range that is to be amplified by the amplifier  
FYBNQMFꢊꢀꢄꢅꢀ)[ꢀGPSꢀBꢀTVCꢀCBTTꢀBQQMJDBUJPOꢀPSꢀꢇꢀL)[ꢀGPSꢀBꢀGVMMꢀ  
range / high-pass application). A steady, sufficient voltage  
(between 200mV and 8.0-volts) should be present at the  
output of the signal cables.  
Check the output of the amplifier. Using the procedure explained in  
the previous check item (after plugging the input cables back  
into the amplifier) test for output at the speaker outputs of  
the amplifier. Unless you enjoy test tones at high levels, it is  
a good idea to remove the speaker wires from the amplifier  
while doing this. Turn the volume up approximately half  
way. 5V or more should be measured at the speaker outputs.  
This output level can vary greatly between amplifiers but it  
should not be in the millivolt range with the source unit at  
half volume. If you are reading sufficient voltage, check your  
speaker connections as explained below.  
positive and negative leads or between either speaker lead  
and the vehicle’s chassis ground. If a short is present, you  
will experience distorted and/or attenuated output. The  
iLow Ωw light will illuminate in this situation. It may be  
helpful to disconnect the speaker wires from the amplifier  
and use a different set of wires connected to a test speaker.  
Check the nominal load impedance to verify that the amplifier  
is driving a load between 1.5 - 4Ω. JL Audio monoblock  
amplifiers have two “+” positive connections and two “–”  
negative connections. This is to facilitate multiple speaker  
wiring. The two positive and two negative connections are  
connected in parallel inside the amplifier. Connecting two  
speakers, each to one set of positive and negative terminals,  
will result in a parallel speaker connection. In this case,  
each of the two loads should have a nominal  
impedance between 3 - 8Ω.  
Check the input signal and input signal cables to make sure signal  
is present at the Amplifier Inputs” and the cables are not  
pinched or loose. It may be helpful to try a different set of  
cables and/or a different signal source to be sure.  
Check to ensure that the speaker wires are making a good  
connection with the metal inside the terminal block. The  
speaker wire connectors are designed to accept up to 8 AWG  
wire. Make sure to strip the wire to allow for a sufficient  
connection with the metal inside the terminal block.  
“My amplifier’s output fluctuates when I tap on it or hit a bump”  
Check the connections to the amplifier. Make sure that the  
insulation for all wires has been stripped back far enough to  
allow a good contact area inside the terminal block.  
Check the input connectors to ensure that they all are making good  
contact with the input jacks on the amplifier.  
20 | JL Audio - 1000/1v2 Owner’s Manual  
21  
 
INSTALLATION NOTES:  
Use this diagram to document your amplifier’s switch and control positions.  
Preamp Output Section  
Infrasonic Filter  
Mode  
“Q”  
1.6  
Center Freq.  
45  
Boost (dB)  
+10  
Amp LP Filter Amplifier Input Section  
Subwoofer Output  
|
Output Mode  
Filter Slope  
Mode Slope  
Input Voltage Input Sens.  
Output Polarity  
1.1  
0.7  
0.5  
2.7 35  
55 +4  
70  
80  
+13  
25  
|
|
|
|
|
|
|
|
Full Range Amp Filter Out Filter  
12dB 24dB  
Off On  
Off 12dB 24dB  
Low High  
Normal Reversed  
4.3 20  
0
+15  
65  
30  
65  
Filter Mode  
Bass EQ  
55  
45  
40  
Filter Freq. (Hz)  
85  
120  
200  
25  
18  
15  
Infrasonic Freq. (Hz)  
40  
50  
60  
55  
45  
40  
Filter Freq. (Hz)  
80  
100  
200  
Advanced  
Bass  
Control  
MONO OUTPUT ONLY  
|
|
LP HP  
Off On  
Left Output Right Output  
Remote Bass Port  
Left Ch.  
Right Ch.  
22 | JL Audio - 1000/1v2 Owner’s Manual  
23  
 

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