JL Audio 8W1v2-4 Manual

JL Audio Subwoofer 8W1v2-4

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Side 1/3

8W1v2-4 / 8W1v2-8

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.

2 JL AUDIO 8W1v2-4/8W1v2-8 JL AUDIO 8W1v2-4/8W1v2-8 3

SUBWOOFER 8W1v2-4 8W1v2-8

Free Air Resonance (Fs): 34.55 Hz 36.60 Hz

Electrical “Q” (Qes): 0.508 0.612

Mechanical “Q” (Qms): 6.260 6.000

Total Speaker “Q” (Qts): 0.470 0.555

Equivalent Compliance (Vas):

0.66 ft³

18.80 l

0.63 ft³

17.87 l

One-way, Linear Excursion (Xmax)*:

0.3 in

7.6 mm

0.3 in

7.6 mm

Efficiency (1W/1m)**: 83.86 83.58

Effective Piston Area (Sd):

32.67 in²

0.0211 m²

32.67 in²

0.0211 m²

DC Resistance (Re): 4.00 ohm 7.84 ohm

Nominal Impedance: 4 ohm 8 ohm

Power Handling (continuous): 150W 150W

* 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” !

SUBWOOFER RECOMMENDED SEALED ENCLOSURES

Volume

(net int.)

External Dimensions

(Width x Height x Depth)

(Hz)

Qtc

8W1v2-4

0.375 ft³

10.6 l

10.5 in x 10.5 in x 10 in

267 mm x 267 mm x 254 mm

52.5 57.4 0.78

8W1v2-8

0.375 ft³

10.6 l

10.5 in x 10.5 in x 10 in

267 mm x 267 mm x 254 mm

50.0 60.0 0.91

All specifications are subject to change without notice.

8W1v2 SUBWOOFER PHYSICAL

SPECIFICATIONS

Nominal Diameter:

8 in

200 mm

Overall Diameter (A):

8.54 in

217 mm

Mounting Hole Diameter (B):

7.09 in

180 mm

Bolt Hole Circle (C):

7.85 in

199 mm

Magnet Diameter (D):

4.54 in

115 mm

Mounting Depth (E):

3.85 in

98 mm

Net Weight:

6.3 lbs

2.9 kg

Driver Displacement:

0.02 ft³

0.57 l

JL AUDIO 8W1v2-4 / 8W1v2-8

CAUTION

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 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

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.

U.S. PATENTS: #5,734,734 #6,501,844 #6,219,431 #D480,709 Other U.S. & Foreign patents pending.

SUBWOOFER RECOMMENDED PORTED ENCLOSURES

Volume

(net int.)

Enclosure External Dimensions

(Width x Height x Depth)

Round Port Specs

(Inner Diameter x Length)

Port Information

Tune to:

(Hz)

8W1v2-4

0.50 ft³

14.2 l

12.5 in x 10 in x 11.5 in

318 mm x 254 mm x 292 mm

2 in x 10 in

51 mm x 254 mm

Round port requires a 90˚ elbow

to fit in the specified enclosure

38 34.7

8W1v2-8

0.50 ft³

14.2 l

12.5 in x 10 in x 11.75 in

318 mm x 254 mm x 298 mm

2 in x 14 in

51 mm x 356 mm

Round port requires a 90˚ elbow

to fit in the specified enclosure

33 35.5

Produkt Specifikationer

Mærke:	JL Audio
Kategori:	Subwoofer
Model:	8W1v2-4

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