JL Audio 12W3v3-4

This powerhouse 12-inch driver delivers potent performance and world-class sound quality in medium power applications. Several exclusive JL Audio technologies and proprietary assembly techniques are applied to the 12W3v3 to enhance linearity and reliability.

The 12W3v3-4 is best used with amplifier power in the 150W - 500W range and is optimized to operate in a compact 1.125 cu. ft. (31.8 l) sealed enclosure, or a 1.75 cu. ft. (49.6 l) ported enclosure. Detailed enclosure recommendations can be found in the "Specifications" tab.

General SpecificationsContinuous Power Handling (RMS)500 WRecommended Amplifier Power (RMS)150 - 500 WNominal Impedance (Znom)4 Ω

Physical SpecificationsNominal Diameter12.0 in / 300 mmOverall Diameter (A)12.5 in / 318 mmMounting Hole Diameter (B)11.0625 in / 281 mmBolt Hole Circle Diameter (C)11.7 in / 297 mmMotor Outer Diameter (D)5.5 in / 140 mmMounting Depth (E)6.65 in / 169 mmDriver Displacement0.071 cu ft / 2.01 LNet Weight14.50 lb / 6.58 kg

ParametersFree Air Resonance (Fs)26.72 HzElectrical “Q” (Qes)0.472Mechanical “Q” (Qms)7.572Total Speaker “Q” (Qts)0.444Equivalent Compliance (Vas)2.844 cu ft / 80.54 LOne-Way Linear Excursion (Xmax)*0.510 in / 13.0 mmReference Efficiency (no)0.31%Efficiency (1 W / 1 m)**87.15 dB SPLEffective Piston Area (Sd)80.600 sq in / 0.0520 sq mDC Resistance (Re)3.563 Ω

* 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 SpecificationsWall Thickness0.75 in / 19 mmFront Baffle Thickness0.75 in / 19 mmVolume (net int.)1.125 cu ft / 31.8 LExternal Width (W)21 in / 533 mmExternal Height (H)14 in / 356 mmExternal Depth (D)10 in / 254 mmF343.7 HzFc50.2 HzQtc0.83

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.

Ported Enclosure SpecificationsWall Thickness0.75 in / 19 mmFront Baffle Thickness0.75 in / 19 mmVolume (net int.)1.75 cu ft / 49.6 LExternal Width (W)29 in / 737 mmExternal Height (H)14 in / 356 mmExternal Depth (D)12.625 in / 321 mmInternal Slot Port Width (SW)1.375 in / 35 mmInternal Slot Port Height (SH)12.5 in / 318 mmInternal Slot Port Length (SL)26.8125 in / 681 mmPort Extension Length (EL)13.5 in / 343 mmTuning Frequency (Fb)30 HzF335 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.