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.)
# 12" 4-ohm subwoofer
# mineral-filled polypropylene cone with nitrile-butylene rubber surround
# power range: 100-500 watts RMS
# peak power handling: 1,000 watts
# frequency response: 22-200 Hz
# sensitivity: 87.15 dB
# top-mount depth: 6-5/8"
# sealed box volume: 1.125 cubic feet
# ported box volume: 1.75 cubic feet
# Recommended Q-Logic Box Type: 1, 2, 3
? Free Air Resonance (Fs): 28.1 Hz
? Electrical "Q" (Qes): 0.474
? Mechanical "Q" (Qms): 9.50
? Total Speaker "Q" (Qts): 0.452
? Equivalent Compliance (Vas): 1.71 cu. ft. / 48.4 liters
? One-Way, Linear Excursion (Xmax)*: 0.549 in. / 13.9 mm
? Reference Efficiency (no): 0.217%
? Efficiency (1W/1m)**: 85.4 dB SPL
? Effective Piston Area (Sd): 53.5 sq. in. / 0.0345 sq. m.
? DC Resistance (Re): 3.31 ohm ? Nominal Impedance (Znom): Dual 2 ohm
? Thermal Power Handling (Pt): 300W
? Driver Displacement: 0.05 cu. ft. / 1.42 liters
? Net Weight: 4.4 kg
