Subwoofer Speed series db Drive SPW12D4 / 12″

Outside Diameter (A) 12.50″ (317mm)
Cutout Diameter (B) 10.89″ (276.5mm)
Mounting Depth (C) 5.913″ (150mm)

GENERAL SPECIFICATIONS
Structure 12″ (3.48cm) Woofer
Dynamic Power Handling 1250 Watts
Nominal Power Handling 600 Watts
Impedance Dual 4Ω Voice Coil

PARAMETERS
Resonant Frequency (fs) 23Hz
D.C. Voice Coil Resistance (Re) 6.4Ω
Mechanical Quality Factor (Qms) 5.79
Electrical Quality Factor (Qes) 0.46
Total Quality Factor (Qts) 0.43
Mass of Diaphragm/Coil (Mms) 168.2 g
Force Factor (Bl) 18.4
Sound Pressure Level (SPL) 86.2dB