JL Audio 13W3v3-4 13inch Subwoofer Driver (4ohm)

Product features

• 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