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.
8W7
Subwoofer
o w n e r ’ s m a n u a l
YELLOW (OPTIMUM):
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.
RED (MAXIMUM):
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 yellow
zone. The closer you are to the black
zone, the higher the likelihood of driver
failure. Operate with caution.
BLACK (WARRANTY VOID):
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.
GREEN (MINIMUM):
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.
2 5 0 W
5 0 0 W
1 0 0 0 W
2 0 0 0 W
4 0 0 0 W
1 2 5 W
When designing systems with W7 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
(clipping) 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.
RECOMMENDED CONTINUOUS (RMS) POWER RANGE FOR ONE SUBWOOFER DRIVER:
JL AUDIO LIMITED WARRANTY (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
International Warranties:
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
JL8W7-04-2003
