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JL Audio 12W0v3-4 12 Inch Subwoofer Driver 4 ohm
- 300 Watts RMS
- 4Ohm Voice Coil
- Dam-Optimized Motor And Elevated Frame Cooling
- Designed For Sealed And Ported Enclosures
JL Audio 12W0v3-4
12" Subwoofer Driver 4 ohm sku 92166
The 12W0v3 is a rugged performer with excellent efficiency, excursion capability and linearity. Its overall performance envelope that puts it right at the top of its price class. It features a beefy 2 in. diameter voice coil and our patented Elevated Frame Cooling design for enhanced power handling and reliability.
The 12W0v3 is best used with amplifier power in the 75W - 300W range and is optimized to operate in a moderately sized 1.375 cu. ft. (38.9 l) sealed enclosure, or a 1.75 cu. ft. (49.6 l) ported enclosure.
- Continuous Power Handling (RMS) 300 W
- Recommended Amplifier Power (RMS) 75 - 300 W
- Nominal Impedance (Znom) 4 Ω
- Nominal Diameter 12.0 in / 300 mm
- Overall Diameter (A) 12.52 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) 5.05 in / 128 mm
- Mounting Depth (E) 5.40 in / 137 mm
- Driver Displacement 0.048 cu ft / 1.36 L
- Net Weight 8.11 lb / 3.68 kg
- Free Air Resonance (Fs) 28.43 Hz
- Electrical “Q” (Qes) 0.715
- Mechanical “Q” (Qms) 10.709
- Total Speaker “Q” (Qts) 0.67
- Equivalent Compliance (Vas) 2.530 cu ft / 71.64 L
- One-Way Linear Excursion (Xmax)* 0.45 in / 11.4 mm
- Reference Efficiency (no) 0.22%
- Efficiency (1 W / 1 m)** 85.64 dB SPL
- Effective Piston Area (Sd) 74.509 sq in / 0.0481 sq m
- DC Resistance (Re) 4.280 Ω
Sealed Closure Specifications
- Wall Thickness 0.75 in / 19 mm
- Front Baffle Thickness 0.75 in / 19 mm
- Volume (net int.) 1.375 cu ft / 38.94 L
- External Width (W) 16 in / 406 mm
- External Height (H) 19 in / 483 mm
- External Depth (D) 11.75 in / 298 mm
- F3 36.0 Hz
- Fc 47.91 Hz
- Qtc 1.179
Ported Enclosure Specifications
- Wall Thickness 0.75 in / 19 mm
- Front Baffle Thickness 0.75 in / 19 mm
- Volume (net int.) 1.75 cu ft / 49.6 L
- External Width (W) 17.5 in / 445 mm
- External Height (H) 14.75 in / 375 mm
- External Depth (D) 16.25 in / 413 mm
- Internal Port Diameter (ID) 3 in / 76 mm
- Port Length (L) 14 in / 356 mm
- Tuning Frequency (Fb) 26 Hz
- F3 30.8 Hz
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.
Since 1997, JL Audio has been at the forefront of Finite Element Analysis-based modeling of loudspeaker motors and suspensions. This research is aimed at decoding what we refer to as the "Loudspeaker Genome"... a project aimed at understanding the true behavior of loudspeakers under power and in motion. A major component of this integrated system is DMA (Dynamic Motor Analysis). Starting with the 15W3 and the W7 Subwoofers in the late 1990's and early 2000's, DMA has played an important role in the design of all JL Audio woofers sold today, including our component woofers.
DMA is a Finite Element Analysis (FEA)-based system, meaning that it takes a large, complex problem, breaks it down into small solution elements for analysis and then assembles the data to form an accurate, "big-picture" solution. DMA's breakthrough is that it actually considers the effects of power through the coil as well as coil/cone position within the framework of a time-domain analysis. This gives us a highly accurate model of a speaker's actual behavior under real power, something that the traditional Thiele-Small models or other low power measurements cannot do. Because DMA does not rely on a steady-state model, it is able to consider shifts in the circuit elements being analyzed. These modeling routines are intense, requiring hours to run for a whole speaker.
DMA is able to analyze the real effects of fluctuating power and excursion upon the magnetic circuit of the motor, specifically the dynamic variations of the "fixed" magnetic field. This delivers intensely valuable information compared to traditional modeling, which assumes that the "fixed" field produced in the air gap by the magnet and the motor plates is unchanging. DMA not only shows that this "fixed" field changes in reaction to the magnetic field created by current flowing through the voice coil, but it helps our engineers arrive at motor solutions that minimize this instability. Analyzing this behavior is critical to understanding the distortion mechanisms of a speaker motor and sheds light on the aspects of motor design that determine truly linear behavior:
- Linear motor force over the speaker's operational excursion range
- Consistent motor force with both positive and negative current through the coil
- Consistent motor force at varying applied power levels
Our ability to fully analyze these aspects of motor behavior allows our transducer engineers to make critical adjustments to motor designs that result in extremely linear, highly stable dynamic loudspeaker motor systems.
The payoff is reduced distortion, improved transient performance and stellar sound quality.
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.
Many speakers employ venting techniques to enhance voice coil cooling. This is typically accomplished by having big holes in the sides of the frame just below the spider attachment shelf. While it provides a modest cooling benefit, this low-velocity air-flow does not blow directly or strongly on the voice coil.
Our patented design improves upon this cooling technique in a number of ways. By elevating the frame above the top-plate of the motor (via stand-offs integrated into the bottom of the frame) a narrow, high-velocity air-path is created between the bottom surface of the frame and the top surface of the top-plate. This air path leads directly to the voice coil and then turns upward into the spider air cavity. By utilizing the pumping action of the spider through this focused air path, a large volume of cool air hits the coil windings directly.
Another important benefit is that the upper surface of the top-plate (one of the speaker's hottest parts) is directly exposed to cooling air flow, whereas on a conventional design it is isolated from the air flow by the lower flange of the frame. The elevated frame technology greatly increases thermal power handling, reduces compression effects and does so without any additional parts.
|Product Name||JL Audio 12W0v3-4 12 Inch Subwoofer Driver 4 ohm|
|Manufacturer's Warranty||1 Year Manufacture's Warranty|
|Manufacture's Warranty 2||N/A|
|Speaker Size||12" Subwoofer|
|Frequency Response||22Hz - 250Hz|
|RMS Power Handling (watts)||Up to 200|
|Peak Power Handling (watts)||201-400|
|Impedance (Ohms)||4 Ohm|
|Cutout Diameter (in)||11|
|Top-mount Depth (Inches)||5.4|
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