Subwoofer db Drive SPX12D4 / 12″

Outside Diameter (A) 12.50″ (317mm)
Cutout Diameter (B) 10.89″ (276.5mm)
Mounting Depth (C) 5.43″ (138mm)

GENERAL SPECIFICATIONS
Structure 12″ (3.48cm) Woofer
Dynamic Power Handling 900 Watts
Nominal Power Handling 300 Watts
Impedance Dual 4Ω Voice Coil

PARAMETERS
Resonant Frequency (fs) 28.7Hz
D.C. Voice Coil Resistance (Re) 6.4Ω
Mechanical Quality Factor (Qms) 8.16
Electrical Quality Factor (Qes) 1.09
Total Quality Factor (Qts) 0.96
Mass of Diaphragm/Coil (Mms) 111.1 g
Force Factor (Bl) 10.9
Sound Pressure Level (SPL) 85.65dB