JL AUDIO 8W1V2-4 (01) PDF Document

The JL AUDIO 8W1V2-4 offers specific power ranges for operation:

Medium Gray (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.

Light Gray (Optimum): This zone represents the best compromise between long-term reliability, high-output and low-distortion performance. This power level is lower than the woofer’s continuous power rating (as published in its specifications), but you will still be taking advantage of the woofer’s, low-distortion performance range without undue risk of failure.

Dark Gray (Maximum): 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 subwoofer driver is designed to operate safely up to this power range, but not beyond. 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.

* Xmax specifications are derived via one-way voice coil overhang method with no correction factors applied.

** Efficiency (1W/1m) is not an accurate indicator of a subwoofer’s output capability and should not be used as a comparison to other subwoofers to determine which one is “louder”!

The sealed enclosure is a better choice if space is extremely tight. Below are the recommended specifications:

The ported enclosure will produce 3dB more output at the same power if you have the extra space to work with. Below are the recommended specifications:

The enclosure recommendations listed 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.

All enclosure volumes listed are net internal volumes. Box volume displacement, port displacement, and brace displacement must be added to obtain the final gross internal volume. All enclosure dimensions listed in the specifications have already taken this into account.

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).

We recommend the use of this speaker in a bi-amplified system using high-quality satellite speakers and amplifiers. We do not recommend the use of this subwoofer with a passive crossover (coil), as this type of device will adversely affect performance.

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.

Additionally, 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.