JL AUDIO 8W1v3-4 - 20cm Subwoofer

8W1v3-4
W1v3 8-inch Subwoofer Driver (150 W, 4 Ohm)

• The 8W1v3 is an outstanding choice when space is very tight and amplifier power is moderate. It features shallow mounting depth (3.86 in. / 98 mm) and a compact motor structure, allowing it to comfortably fit in a lot of spaces where a typical 8-inch driver will not. Lacking a pole vent, the rear of the motor structure can be placed directly against an enclosure boundary. Excellent excursion capability and linearity allow it to reproduce sub-bass with shocking extension and quality. Several of JL Audio's proprietary technologies enhance its performance and reliability.
• The 8W1v3-4 is best used with amplifier power in the 50W - 150W range and is optimized to operate in a compact 0.350 cu. ft. (9.90 l) sealed enclosure.

General Specifications

• Continuous Power Handling (RMS): 150 W
• Recommended Amplifier Power (RMS): 50 - 150 W
• Nominal Impedance (Znom): 4 ohms

Physical Specifications (Pict.5)

• Nominal Diameter: 8.0 in / 200 mm
• Overall Diameter (A): 8.5 in / 216 mm
• Mounting Hole Diameter (B): 7.09 in / 180 mm
• Bolt Hole Circle Diameter (C): 7.85 in / 199 mm
• Motor Outer Diameter (D): 4.72 in / 120 mm
• Mounting Depth (E): 3.86 in / 98 mm
• Driver Displacement: 0.018 cu ft / 0.51 L
• Net Weight: 7.4 lb / 3.4 kg

Parameters

• Free Air Resonance (Fs): 35.40 Hz
• Electrical “Q” (Qes): 0.451
• Mechanical “Q” (Qms): 5.791
• Total Speaker “Q” (Qts): 0.418
• Equivalent Compliance (Vas): 0.68 cu ft / 19.26 L
• One-Way Linear Excursion (Xmax)*: 0.3 in / 8 mm
• Reference Efficiency (no): 0.18%
• Efficiency (1 W / 1 m)** :84.8 dB SPL
• Effective Piston Area (Sd): 32.67 sq in / 0.0211 sq m
• DC Resistance (Re): 4.06 ohms

* Xmax specifications are derived via one-way voice coil overhang method with no correction factors applied.
** Efficiency (1 W / 1 m) 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”.

Sealed Enclosure Specifications (Pict.6)

• Wall Thickness: 0.75 in / 19 mm
• Front Baffle Thickness: 0.75 in / 19 mm
• Volume (net int.): 0.350 cu ft / 9.90 L
• External Width (W): 12 in / 305 mm
• External Height (H): 10 in / 254 mm
• External Depth (D): 8.625 in / 219 mm
• F3: 59.9 Hz
• Fc: 60.7 Hz
• Qtc: 0.717

Ported Enclosure Specifications (Pict.7)

• Wall Thickness: 0.75 in / 19 mm
• Front Baffle Thickness: 0.75 in / 19 mm
• Volume (net int.): 0.50 cu ft / 14.2 L
• External Width (W): 13.0 in / 330 mm
• External Height (H): 10 in / 254 mm
• External Depth (D): 11.125 in / 283 mm
• Internal Port Diameter (ID): 2 in / 51 mm
• Port Length (L): 10 in / 254 mm
• Tuning Frequency (Fb): 38 Hz
• F3: 39.10 Hz

Enclosure Notes
* The enclosure recommendations listed above are external dimensions which assume the use of 0.75 in (19 mm) thick material. If you are using 0.625 in (16 mm) thick material, subtract 0.25 in (6.5 mm) from each dimension. Do not use any material with a thickness of less than 0.625 in (16 mm) as this may compromise the rigidity of the enclosure.
* All enclosure volumes listed above are net internal volumes! Driver displacement, port displacement and brace displacement must be added to obtain the final gross internal volume. All enclosure dimensions above have already taken this into account.
* When using multiple subwoofers in a common enclosure you will need to recalculate the enclosure and port dimensions. For assistance please contact your authorized JL Audio dealer or JL Audio Technical Support.
* We recommend the use of this speaker in a bi-amplified system using high-quality satellite speakers and a high-quality amplifier. We do not recommend the use of this subwoofer with a passive crossover (coil), as this type of device will adversely affect performance.
* All specifications are subject to change without notice.

Safety Notice
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.