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JL Audio (12W1v3-4) - 12in (300mm) Subwoofer Driver, Each, 300 Watt RMS, 4 Ohm

Description:

12W1v3-4 W1v3 12-inch Subwoofer Driver (300 W, 4 Ohm)

The 12W1v3 is a lightweight 12-inch driver with excellent performance capabilities at moderate power levels. It features moderate mounting depth with no pole-vent, so 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 12W1v3-4 is best used with amplifier power in the 75W - 300W range and is optimized to operate in a compact 1.10 cu. ft. (31.5 l) sealed enclosure. Detailed enclosure recommendations can be found below.

Technology:

DMA Optimized - Dynamic Motor Analysis - DMA Optimized Motor
JL Audio's proprietary Dynamic Motor Analysis system is a powerful suite of FEA-based modeling systems, first developed by JL Audio in 1997 and refined over the years to scientifically address the issue of speaker motor linearity. This leads to vastly reduced distortion and faithfully reproduced transients... or put simply: tight, clean, articulate bass

Elevated Frame Cooling - Elevated Frame Cooling (U.S. Patent #6,219,431 & #6,229,902)
JL Audio's patented Elevated Frame Cooling design delivers cool air through slots directly above the top-plate to the voice coil of the speaker. This not only enhances power handling, but also sound quality by minimizing dynamic parameter shifts and power compression.

FCAM - Floating Cone Attach Method - FCAM (U.S. Patent #6,501,844)
This assembly technique, conceived by JL Audio, ensures proper surround geometry in the assembled speaker for better excursion control and dynamic voice coil alignment.

VRC - Vented Reinforcement Collar (U.S. Patent #5,734,734)
JL Audio's patented Vented Reinforcement Collar (VRC) improves the rigidity and stability of the cone/spider/voice coil junction and directs airflow over the voice coil windings for improved thermal performance.

Insert Molded Suspension / Coil / Terminal Sub-Assembly - Insert Molded Suspension / Coil / Terminal Sub-Assembly (U.S. Patent #7,379,558)
Spiders, voice coils, terminals and lead wires are pre assembled, using a patent-pending process, onto a composite carrier for improved precision and reliability.

Engineered Lead-Wire System - Engineered Lead-Wire System (U.S. Patent #7,356,157)
Carefully engineered lead-wire design and attachments ensure controlled, quiet lead-wire behavior under the most extreme excursion demands.

Features and Specifications:

• W1v3 12-inch Subwoofer Driver (300 W, 4 Ohm)
• Continuous Power Handling (RMS): 300 W
• Recommended Amplifier Power (RMS): 75 - 300 W
• Nominal Impedance: 4 Ohm
• Free Air Resonance (Fs): 26.21 Hz
• Electrical "Q" (Qes): 0.535
• Mechanical "Q" (Qms): 8.2
• Total Speaker "Q" (Qts): 0.502
• Equivalent Compliance (Vas): 2.706 cu ft / 76.63 L
• One-Way Linear Excursion (Xmax)*: 0.45 in / 11 mm
• Reference Efficiency (no): 0.25%
• Efficiency (1 W / 1 m)**: 86.1 dB SPL
• Effective Piston Area (Sd): 81.426 sq in / 0.0525 sq m
• DC Resistance (Re): 3.915 Ohm
• UPC 0699440920834
• Color: Black
• Manufacturer's Limited Warranty - 1 Year(s)
• Sold: Each

12W1v3-4 Subwoofer Driver - Physical Specifications
Nominal Diameter	12.0 in / 300 mm
Overall Diameter (A)	12.5 in / 318 mm
Mounting Hole Diameter (B)	11.0625 in / 281 mm
Bolt Hole Circle Diameter (C)	11.7 in / 297 mm
Motor Outer Diameter (D)	5.25 in / 133 mm
Mounting Depth (E)	5.41 in / 137 mm
Driver Displacement	0.052 cu ft / 1.47 L
Net Weight	12.2 lb / 5.5 kg

Sealed Enclosure - Physical Specifications
Wall Thickness	0.75 in / 19 mm
Front Baffle Thickness	0.75 in / 19 mm
Volume (net int.)	1.10 cu ft / 31.5 L
External Width (W)	16 in / 406 mm
External Height (H)	16 in / 406 mm
External Depth (D)	11 in / 279 mm
F3	39.63 Hz
Fc	48.75 Hz
Qtc	0.9338

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.
* JL Audio recommends the use of this speaker in a bi-amplified system using high-quality satellite speakers and a high-quality amplifier. They 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. JL Audio recommends 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 - Physical Specifications
Wall Thickness	0.75 in / 19 mm
Front Baffle Thickness	0.75 in / 19 mm
Volume (net int.)	1.6 cu ft / 45.3 L
External Width (W)	25 in / 635 mm
External Height (H)	15.5 in / 394 mm
External Depth (D)	13 in / 330 mm
Internal Slot Port Width (SW)	1.5 in / 38 mm
Internal Slot Port Height (SH)	14 in / 356 mm
Internal Slot Port Length (SL)	30.75 in / 781 mm
Port Extension Length (EL)	17 in / 432 mm
Tuning Frequency (Fb)	31.79 Hz
F3	31.41 Hz

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.

The 12W1v3-4 Product Manual