Featuring a 56 oz. ferrite magnet, the 450 watt 4 ohm Delta Pro 12-450-4 12" excels as a woofer or midbass in vented enclosures. This driver also makes a perfect replacement in many portable PA cabinets. The Delta Pro 12-450-4 also features a 2.5” voice coil and a usable frequency range of 45 Hz to 3.8 kHz.
High efficiency and 450 watt RMS for high output capability
Vented voice coil with a polyimide former for increased power handling
High excursion design for impressive bass performance
Perfect replacement for many portable PA cabinets
Designed and assembled in the USA with a 7-year manufacturer's warranty
Power Handling (RMS)450 Watts
Power Handling (max)900 Watts
Frequency Response45 to 3,800 Hz
Sensitivity97.4 dB 1W/1m
Voice Coil Diameter2.5"
Magnet Weight56 oz.
Resonant Frequency (Fs)45 Hz
DC Resistance (Re)3.65 ohms
Voice Coil Inductance (Le)0.45 mH
Mechanical Q (Qms)7.97
Electromagnetic Q (Qes)0.41
Total Q (Qts)0.39
Compliance Equivalent Volume (Vas)4.86 ft.³
Mechanical Compliance of Suspension (Cms)0.35 mm/N
BL Product (BL)9.51 Tm
Diaphragm Mass Inc. Airload (Mms)36g
Maximum Linear Excursion (Xmax)5.2 mm
Surface Area of Cone (Sd)532.4 cm²
Materials of Construction
Voice Coil Wire MaterialAluminum
Voice Coil FormerKapton® / 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)