JL Audio 15W3 18W3 User Manual

15W3 18W3  
Subwoofers  
o w n e r ’ s m a n u a l  
Congratulations on your purchase of a JL Audio subwoofer component. Your JL Audio subwoofer is a  
precision loudspeaker which has been engineered to produce the highest quality sub-bass performance in  
your vehicle. Authorized JL Audio dealers have extensive technical information for many different  
applications of your new speaker. They also have the knowledge, skills and tools to build a high-quality  
enclosure that will maximize the performance of your speaker. We highly recommend that you have  
your enclosure built by an authorized JL Audio dealer.  
Inside you will find specifications and two recommended enclosures for your speaker; one is a sealed  
enclosure, the other is a ported design. Both types of enclosures will give you excellent sound quality and  
low-frequency extension. The sealed enclosure is a better choice if space is extremely tight, but the ported  
enclosure will produce 3dB more output at the same power if you have the extra space to work with.  
If you decide to build one of these enclosures yourself, you must have the construction of the box  
inspected and approved by your authorized JL Audio dealer in order for the 1 year limited warranty to  
be valid. Please read the warranty information carefully.  
RECOMMENDED ENCLOSURES  
SUBWOOFER  
SEALED ENCLOSURE  
PORTED ENCLOSURE  
Volume  
External Dimensions  
(Width x Height x Depth)  
22" x 16" x 14.75"  
Volume  
External Dimensions  
(Width x Height x Depth)  
24" x 19" x 18"  
Port(s)  
(Inside Dia. x Length)  
(2) 3.0" x 11.6"  
(net int.)  
(net int.)  
3
3
2.125 ft  
3.50 ft  
15W3-D2  
15W3-D4  
18W3-D2  
60.2 litres  
2.125 ft  
559mm x 406mm x 375mm  
22" x 16" x 14.75"  
559mm x 406mm x 375mm  
24" x 19" x 15.5"  
610mm x 483mm x 394mm  
24" x 19" x 16.75"  
610mm x 483mm x 425mm  
99.1 litres  
3.50 ft  
610mm x 483mm x 457mm  
24" x 19" x 18"  
610mm x 483mm x 457mm  
26" x 22" x 16.25"  
660mm x 559mm x 413mm  
26" x 22" x 18"  
660mm x 559mm x 457mm  
(2) 76mm x 295mm  
(2) 3.0" x 10.9"  
(2) 76mm x 277mm  
(2) 3.0" x 10.1"  
(2) 76mm x 257mm  
(2) 3.0" x 8.6"  
(2) 76mm x 218mm  
3
3
60.2 litres  
99.1 litres  
3
3
3.00 ft  
4.00 ft  
85 litres  
113.3 litres  
3
3
3.25 ft  
4.50 ft  
18W3-D4  
92 litres  
127.4 litres  
C A U T I O N  
Prolonged exposure to sound  
pressure levels in excess of 100dB  
can cause permanent hearing loss.  
This high-performance speaker can  
exceed this level. Please exercise  
restraint in its operation in order  
to preserve your ability to enjoy  
its fidelity.  
When installing  
a
subwoofer  
in your vehicle, it is extremely  
important to secure the enclosure  
firmly. We recommend bolting the  
enclosure through the metal of  
the floorpan or the frame of the  
vehicle with large diameter washers  
for reinforcement. If an enclosure  
is not firmly attached, it can  
become a projectile in a collision.  
This is particularly important in a  
hatchback, station wagon, sports  
utility vehicle, or van.  
The enclosure recommendations listed above are  
external dimensions which assume the use of 3/4"  
(19mm) thick material. If you are using 5/8"  
(16mm) thick material, subtract 1/4" (6.5mm) from  
each dimension. Do not use any material with a  
thickness of less than 5/8" (16mm) as this may  
compromise the rigidity of the enclosure.  
displacement and brace displacement must be  
added to obtain the final gross internal volume.  
All enclosure dimensions above have already taken  
this into acount.  
• When using two subwoofers in a common  
enclosure simply double the required volume and,  
in the case of a ported enclosure, use two times  
the recommended port(s). Likewise, when using  
three subwoofers in a common enclosure simply  
triple the required volume and, in the case of a  
ported enclosure, use three times the  
recommended port(s).  
• We recommend the use of this speaker in a  
bi-amplified system using high-quality satellite  
speakers and a high-quality amplifier. We do not  
recommend the use of this subwoofer with a  
passive crossover (coil), as this type of device will  
adversely affect performance.  
All enclosure volumes listed above are net  
internal volumes! Driver displacement, port  
All specifications are subject to change without notice.  
JL AUDIO 15W3/18W3  
3
RECOMMENDED CONTINUOUS (RMS) POWER RANGE FOR ONE SUBWOOFER DRIVER:  
3 0 W  
6 0 W  
1 2 5 W  
2 5 0 W  
5 0 0 W  
1 0 0 0 W  
18W3  
15W3  
L E G E N D :  
M E D. G R AY :  
L I G H T G R AY :  
DA R K G R AY :  
B L AC K :  
M I N I M U M  
O P T I M U M  
M A X I M U M  
WA R R A N T Y VO I D  
MEDIUM GRAY (MINIMUM):  
LIGHT GRAY (OPTIMUM):  
DARK GRAY (MAXIMUM):  
BLACK (WARRANTY VOID):  
From a reliability standpoint,this zone represents  
a very comfortable operating power range for each  
driver. This level of power will not stress the  
woofer but will not extract all of its performance  
potential, either.  
Use of less than the minimum power level will  
not damage the woofer, but may result in  
unsatisfactory performance.  
This zone represents the best compromise  
between long-term reliability, high-output and low-  
distortion performance and is centered on each  
woofer's continuous power rating (as published in  
its specifications).In this zone,you will be taking full  
advantage of the woofer's optimum, low-distortion  
performance range without undue risk of failure.  
In this zone, low-distortion output and long-term  
reliability will be compromised (especially by an  
aggressive user). Slightly more SPL will be gained by  
pushing the power into this zone, but typically not  
more than 2dB, compared to the light gray zone.  
The closer you are to the black zone,the higher the  
likelihood of driver failure. Operate with caution.  
We do not recommend operating woofers at  
this level of power. In this zone, there is a very high  
probability that the driver will fail due to excessive  
heat and/or mechanical stress.  
Subwoofer drivers operated at these levels of  
power are NOT covered under warranty.  
JL Audio offers an extensive line of high-performance subwoofer drivers to fit a wide variety of enclosure and power applications.When designing systems with our drivers, it is very important  
to achieve a good power match between the subwoofer amplifier and the subwoofer driver's capabilities. The power levels listed in the above chart represent continuous (RMS) amplifier power  
per woofer and assume that the user will regularly make full use of that power without drastically overdriving the amplifier(s). Make sure you factor system impedance and the total  
number of subwoofers into your calculations.Adhering to these power recommendations will result in systems that are both reliable and enjoyable.  
JL AUDIO LIMITEDWARRANTY (USA)  
Automotive Subwoofer Components  
JL AUDIO warrants this speaker to be free of defects in materials and workmanship for a period of one (1) year from the original date of purchase, contingent upon installation  
being performed or approved by an authorized JL AUDIO dealer, in writing, on the original sales receipt. If the preceding condition is not met, the warranty term is  
limited to ninety (90) days from the original purchase date.  
This warranty is not transferrable and applies only to the original purchaser of the product from an authorized JL AUDIO dealer. Should service be necessary under this warranty  
for any reason due to manufacturing defect or malfunction, JL AUDIO will, at its discretion, repair or replace the defective product with new or remanufactured product at no charge.  
Damage caused by the following is not covered under warranty: accident, misuse, abuse, product modification or neglect, failure to follow installation instructions, unauthorized  
repair attempts, misrepresentations by the seller. This warranty does not cover incidental or consequential damages and does not cover the cost of removing or reinstalling the  
unit(s). Cosmetic damage due to accident or normal wear and tear is not covered under warranty.  
Any applicable implied warranties are limited in duration to the period of the express warranty as provided herein beginning with the date of the original purchase at retail, and  
no warranties, whether express or implied, shall apply to this product thereafter. Some states do not allow limitations on implied warranties, therefore these exclusions may not  
apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.  
If you need service on your JL AUDIO product:  
All warranty returns should be sent to JL AUDIO freight prepaid through an authorized JL AUDIO dealer and must be accompanied by proof of purchase (a copy of the original  
sales receipt.) Direct returns from consumers or non-authorized dealers will be refused unless specifically authorized by JL AUDIO with a valid return authorization number.  
Warranty expiration on products returned without proof of purchase will be determined from the manufacturing date code. Coverage may be invalidated as this date is previous  
to purchase date. Return only defective components. Non-defective items received will be returned freight-collect. Customer is responsible for shipping charges and insurance in  
sending the product to JL AUDIO. Freight damage on returns is not covered under warranty. Always include proof of purchase (sales receipt).  
For Service Information in the U.S.A. please call:  
JL Audio customer service: (954) 443-1100 during normal business hours (Eastern Time)  
JL Audio, Inc  
10369 North Commerce Parkway, Miramar, FL 33025  
InternationalWarranties:  
Products purchased outside the United States of America are covered only by that country’s distributor and not by JL Audio, Inc.  
Printed in USA  
JL15-18W3-02-2003  

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