JL Audio 8W3v3-4, 8W3v3-8 Owners Manual

8W3v3-4 / 8W3v3-8

Subwoofers

owner’s manual

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.

B

JL AUDIO 8W3v3-4 / 8W3v3-8

U.S . PATENTS : #5,73 4,734 # 6, 501,844 # 6, 219,431 #D48 0,709 O ther U.S. & F oreign pate nts pe nding.

C

D

10W3v3 SUBWOOFER PHYSICAL

Mounting Hole Diameter (B):

SPECIFICATIONS

Nominal Diameter:

Overall Diameter (A):

Bolt Hole Circle (C):

Magnet Diameter (D):

Mounting Depth (E):

8.0 in.
200 mm

8.54 in.
217 mm

7.09 in.
180 mm

7.85 in.
199 mm

4.75 in.
121 mm

4.63 in.
118 mm

A

E

SUBWOOFER 8W3v3-4 8W3v3-8

Free Air Resonance (Fs): 35.14 Hz 35.40 Hz

Electrical “Q” (Qes): 0.501 0.489

Mechanical “Q” (Qms): 7.071 6.789

Total Speaker “Q” (Qts): 0.467 0.456

Equivalent Compliance (Vas):

One-way, Linear Excursion (Xmax)*:

Efficiency (1W/1m)**: 83.24 dB SPL 83.68 dB SPL

Effective Piston Area (Sd):

0.54 ft³

15.29 litres

0.375 in.
10 mm

32.02 in²

0.021 m²

0.57 ft³

16.14 litres

0.375 in.
10 mm

32.02 in²

0.021 m²

Net Weight:

Driver Displacement:

2 JL AUDIO 8W3v3-4/8W3v3-8

8.2 lbs

3.7 kgs

0.03 ft³

0.85 litres

Power Handling (continuous): 250W 250W

* 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” !

DC Resistance (Re): 3.77 ohm 7.42 ohm

Nominal Impedance: 4 ohm 8 ohm