Featuring a 56 oz. ferrite magnet, the 375 watt Delta Pro 12-450A 12" is recommended as a woofer or midbass in vented enclosures, and also makes a perfect replacement in many portable PA cabinets, including MackieÃÂ®Ã¢ÂÂs popular SRM450 Series loudspeakers (version1). The Delta Pro 12-450A also features a 2.5Ã¢ÂÂ voice coil and a usable frequency range of 44 Hz to 4 kHz.
Same performance as the Delta Pro 12A with 30% less weight
Designed to work as a woofer or midbass in vented enclosures
375 watt RMS power handling
Designed and assembled in the USA with a 7-year manufacturer's warranty
Power Handling (RMS)350 Watts
Power Handling (max)750 Watts
Frequency Response44 to 4,000 Hz
Sensitivity99.8 dB 1W/1m
Voice Coil Diameter2.5"
Magnet Weight56 oz.
Resonant Frequency (Fs)44 Hz
DC Resistance (Re)5.04 ohms
Voice Coil Inductance (Le)0.54 mH
Mechanical Q (Qms)7.59
Electromagnetic Q (Qes)0.39
Total Q (Qts)0.37
Compliance Equivalent Volume (Vas)5.00 ft.ÃÂ³
Mechanical Compliance of Suspension (Cms)11.47 mm/N
BL Product (BL)11.47 Tm
Diaphragm Mass Inc. Airload (Mms)36g
Maximum Linear Excursion (Xmax)5.10 mm
Surface Area of Cone (Sd)532.4 cmÃÂ²
Materials of Construction
Voice Coil Wire MaterialAluminum
Voice Coil FormerKaptonÃÂ® / Polyimide
Basket / Frame MaterialCast Aluminum
Overall Outside Diameter12.38"
Baffle Cutout Diameter11.07"
Bolt Circle Diameter11.57"
# Mounting Holes8
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)