Free Air Resonance (Fs): 28.5 Hz

Electrical “Q” (Qes): 0.497

Mechanical “Q” (Qms): 8.458

Total Speaker “Q” (Qts): 0.469

Equivalent Compliance (Vas): 1.18 cu. ft. / 33.4 liters

One-Way, Linear Excursion (Xmax)*: 0.60 in. / 15.2 mm

Reference Efficiency (no): 0.149%

Efficiency (1W/1m)**: 83.7 dB SPL

Effective Piston Area (Sd): 51.4 sq. in. / 0.0332 sq. m.

DC Resistance (Re): 6.30 ohm

Nominal Impedance (Znom): 2x4 ohm

Thermal Power Handling (Pt): 600W

Driver Displacement: 1.9 liters

Net Weight: 6.4 kg

Nominal Diameter 254 mm

Overall diameter 267mm

Mounting hole diameter 228.5 mm

Bolt hole circle 250.5mm

Magnet diameter 156

Mounting depth 175mm