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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. 
Free Air Resonance (Fs): 26.72 Hz 
Electrical Q (Qes): 0.472 
Mechanical Q (Qms): 7.572 
Total Speaker Q (Qts): 0.444 
Equivalent Compliance (Vas): 2.844 cu. ft. / 80.54 litres 
One-Way, Linear Excursion (Xmax)*: 0.510 in. / 13.0 mm 
Reference Efficiency (no): 0.31% 
Efficiency (1W/1m)**: 87.15 dB SPL 
Effective Piston Area (Sd): 80.600 sq. in. / 0.0520 sq. m. 
DC Resistance (Re): 3.563 ohm 
Nominal Impedance (Znom): 4 ohm 
Thermal Power Handling (Pt): 500W 
Driver Displacement: 0.071 cu. ft. / 2.01 litres 
Net Weight: 14.50 lbs. / 6.58 kg 
Part Number 2W3V3-4