JL Audio 12W3v3-4, 12W3v3-8 Owner's Manual

12W3v3-2 / 12W3v3-4 / 12W3v3-8

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.

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.

JL AUDIO 12W3v3-2 / 12W3v3-4 / 12W3v3-8

U.S . PATENTS : #5, 734,734 #6 ,501, 844 # 6,219,431 #D4 80,7 09 Other U. S. & For eign p atents pending.

#

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$

12W3v3 SUBWOOFER PHYSICAL

Mounting Hole Diameter (B):

SPECIFICATIONS

Nominal Diameter:

Overall Diameter (A):

Bolt Hole Circle (C):

Magnet Diameter (D):

Mounting Depth (E):

12.0 in.
305 mm

12.5 in.
318 mm

11.0625 in.
281 mm

11.7 in.
297 mm

5.5 in.
140 mm

6.65 in.
169 mm

!

SUBWOOFER 12W3v3-2 12W3v3-4 12W3v3-8

Free Air Resonance (Fs): 27.97 Hz 26.72 Hz 28.28 Hz

Electrical “Q” (Qes): 0.534 0.472 0.553

Mechanical “Q” (Qms): 7.678 7.572 6.936

Total Speaker “Q” (Qts): 0.500 0.444 0.512

Equivalent Compliance (Vas):

One-way, Linear Excursion (Xmax)*:

Efficiency (1W/1m)**: 87.15 dB SPL 87.15 dB SPL 87.02 dB SPL

Effective Piston Area (Sd):

2.806 ft³

79.47 litres

0.510 in.

13.0 mm

80.600 ft²

0.0520 m²

2.844 ft³

80.54 litres

0.510 in.

13.0 mm

80.600 ft²

0.0520 m²

%

2.729 ft³

77.29 litres

0.510 in.

13.0 mm

80.600 ft²

0.0520 m²

Net Weight:

Driver Displacement:

2 JL AUDIO 12W3v3-2/12W3v3-4/12W3v3-8

14.50 lbs.

6.58 kg

0.071 ft³

2.01 litres

Power Handling (continuous): 300W 300W 300W

* 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): 1.658 ohm 3.563 ohm 7.310 ohm

Nominal Impedance: 2 ohm 4 ohm 8 ohm