JL - 13W3v3-4 13.5inch 600W 4ohm Sub Woofer

W3v3: TechnologiesW3v3 Subwoofer DriversClearly the best sounding W3' s yet, these subwoofers feature DMA-optimized, long linear excursion capability to minimize distortion and increase output. W3v3' s are available in single 2 ohm, 4 ohm and 8 ohm versions (6W3v3 available in 4 ohm and 8 ohm only) and are superb performers at medium power levels in compact sealed or ported enclosures. Multiple patented technologies enhance performance and reliability. As with JL Audio' s flagship drivers, development was guided by JL Audio' s proprietary DMA (Dynamic Motor Analysis) modeling system to deliver outstanding dynamic stability and low-distortion operation within their intended power envelope. A mineral-filled polypropylene upper cone body with a metallic JL Audio logo medallion provides a classy new look, while a removable (and customizable) mounting flange trim ring receives grille-mesh inserts directly, without the need for additional grille hardware. (Grille mesh inserts are sold separately.) DMA Optimized Motor System

13W3v3 DRIVER SPECIFICATIONS13W3v3-4
Free Air Resonance (Fs): 23.66 Hz
Electrical Q (Qes): 0.465
Mechanical Q (Qms): 6.774
Total Speaker Q (Qts): 0.435
Equivalent Compliance (Vas): 4.793 cu. ft. / 135.74 liters
One-Way, Linear Excursion (Xmax)*: 0.610 in. / 15.5 mm
Reference Efficiency (no): 0.371%
Efficiency (1W/1m)**: 87.90 dB SPL
Effective Piston Area (Sd): 103.850 sq. in. / 0.0670 sq. m..
DC Resistance (Re): 3.569 ohm
Nominal Impedance (Znom): 4 ohm
Thermal Power Handling (Pt): 600W
Driver Displacement: 0.096 cu. ft. / 2.72 liters
Net Weight: 17.75 lbs. / 8.05 kg