Free Air Resonance (Fs): 23.68 Hz

Electrical “Q” (Qes): 0.443

Mechanical “Q” (Qms): 6.465

Total Speaker “Q” (Qts): 0.414

Equivalent Compliance (Vas): 3.739 cu. ft. / 105.81 liters

One-Way, Linear Excursion (Xmax)*: 0.375 in. / 9.5 mm

Reference Efficiency (no): 0.304%

Efficiency (1W/1m)**: 86.81 dB SPL

Effective Piston Area (Sd): 81.392 sq. in. / 0.0525 sq. m.

DC Resistance (Re): 4.101 ohm

Nominal Impedance (Znom): 4 ohm

Thermal Power Handling (Pt): 300W

Driver Displacement: 0.99 liters

Net Weight: 3.90 kg

Nominal Diameter 300 mm

Overall diameter 317.5 mm

Mounting hole diameter 281 mm

Bolt hole circle 297 mm

Magnet diameter 121 mm

Mounting depth 130 mm