JL Audio 8W1v2-4 Subwoofer Recommended Sealed Enclosures, Subwoofer Recommended Ported Enclosures

JL AUDIO 8W1v2-4 / 8W1v2-8

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

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B

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E A

All specifications are subject to change without notice.

SUBWOOFER		RECOMMENDED SEALED ENCLOSURES
	Volume	External Dimensions	F3	Fc	Qtc
	(net int.)	(Width x Height x Depth)	(Hz)	(Hz)
8W1v2-4	0.375 ft³	10.5 in x 10.5 in x 10 in	52.5	57.4	0.78
	10.6 l	267 mm x 267 mm x 254 mm
8W1v2-8	0.375 ft³	10.5 in x 10.5 in x 10 in	50.0	60.0	0.91
	10.6 l	267 mm x 267 mm x 254 mm

SUBWOOFER		RECOMMENDED PORTED ENCLOSURES
	Volume	Enclosure External Dimensions	Round Port Specs	Port Information	Tune to:	F3
	(net int.)	(Width x Height x Depth)	(Inner Diameter x Length)		(Hz)	(Hz)
8W1v2-4	0.50 ft³	12.5 in x 10 in x 11.5 in	2 in x 10 in	Round port requires a 90˚ elbow	38	34.7
	14.2 l	318 mm x 254 mm x 292 mm	51 mm x 254 mm	to fit in the specified enclosure
	0.50 ft³	12.5 in x 10 in x 11.75 in	2 in x 14 in	Round port requires a 90˚ elbow

8W1v2 SUBWOOFER PHYSICAL

SPECIFICATIONS

SUBWOOFER	8W1v2-4	8W1v2-8
Free Air Resonance (Fs):	34.55 Hz	36.60 Hz

8W1v2-8 14.2 l 318 mm x 254 mm x 298 mm 51 mm x 356 mm to fit in the specified enclosure 33 35.5

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

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	0.63 ft³
	18.80 l	17.87 l
One-way, Linear Excursion (Xmax)*:	0.3 in	0.3 in
	7.6 mm	7.6 mm
Efficiency (1W/1m)**:	83.86	83.58
Effective Piston Area (Sd):	32.67 in²	32.67 in²
	0.0211 m²	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” !

•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.

! ! 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.

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