Free Air Resonance (Fs): 24.3 Hz

Electrical “Q” (Qes): 0.464

Mechanical “Q” (Qms): 6.700

Total Speaker “Q” (Qts): 0.434

Equivalent Compliance (Vas): 3.94 cu. ft. / 111.6 liters

One-Way, Linear Excursion (Xmax)*: 0.85 in. / 21.6 mm

Reference Efficiency (no): 0.331%

Efficiency (1W/1m)**: 87.4 dB SPL

Effective Piston Area (Sd): 100.4 sq. in. / 0.0648 sq. m.

DC Resistance (Re): 6.50 ohm***

Nominal Impedance (Znom): Dual 4 ohm

Thermal Power Handling (Pt): 750W

Driver Displacement: 3.4 liters

Net Weight: 12.2 kg

Nominal Diameter 345 mm

Overall diameter 356mm

Mounting hole diameter 317.5 mm

Bolt hole circle 339mm

Magnet diameter 169mm

Mounting depth 234mm