B&C's 12MH32 is a very high efficiency 12" driver for professional woofer and midbass speaker applications. The 12MH32's 3" copper voice coil and a low-mass yet stiff cone help provide clean, detailed, high-impact sound reproduction. This Italian-made 12" pro PA speaker resolves fine details in audio program material, due to the aluminum demodulation ring in the motor, and reproduces them accurately at concert-level volume.
Power Handling (RMS)400 Watts
Power Handling (max)800 Watts
Frequency Response50 to 3,000 Hz
Sensitivity101 dB 1W/1m
Voice Coil Diameter3"
Resonant Frequency (Fs)53 Hz
DC Resistance (Re)5 ohms
Voice Coil Inductance (Le)0.83 mH
Mechanical Q (Qms)7.2
Electromagnetic Q (Qes)0.2
Total Q (Qts)0.19
Compliance Equivalent Volume (Vas)2.2 ft.³
BL Product (BL)22.3 Tm
Diaphragm Mass Inc. Airload (Mms)54g
Maximum Linear Excursion (Xmax)5 mm
Surface Area of Cone (Sd)522 cm²
Materials of Construction
Cone MaterialCoated Paper
Voice Coil Wire MaterialCopper
Voice Coil FormerFiberglass
Basket / Frame MaterialCast Aluminum
Overall Outside Diameter12.4"
Baffle Cutout Diameter11.1"
Bolt Circle Diameter11.6"
# Mounting Holes8
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)