Taking a cue from the popular MOJO Pro speaker line, the MOJO Pro subwoofers are high output, no-nonsense SPL machines developed to fit in more traditional enclosures allowing MOJO bass to be brought to even more applications. MOJO Pro 12" 4Ω DVC subwoofers are built to handle 750w RMS power and will produce thunderous bass that will please anyone who loves it loud. Features: Specifically designed for high SPL performance DVVC Direct Vent Voice Coil Cooling 2.5” Voice Coil Cross drilled front plate venting Aluminum shorting ring for reduced inductance Double stitched foam surround Rigid paper cone Progressive spider Diecast basket Single Sided compression terminals Thiele Small Parameters: Resonant Frequency (fs): 36.7Hz Mechanical Q (Qms): 7.217 Electrical Q (Qes): 0.764 Total Q (Qts): 0.69 Sensitivity: 85.68 dB Xmax Linear: 0.51 in Displacement: 0.16 cf. Air Volume of Suspension (Vas): 1.09 cf. Moving Mass (Mms): 241.3g Suspension Compliance (Cms): 0.078 mmN Effective Piston area (Sd): 530.93 SqCm Motor Strength (Bl): 11.23 TM DC Resistance: 1.73 Ohms Voice Coil and Magnet: Impedance Series: 8 Ohms Impedance Parallel: 2 Ohms Voice Coil Diameter: 2.5 in RMS Power: 750 watts Peak Power: 1500 watts Magnet Weight: 120 oz. Magnet Diameter: 6.69 in. Physical Dimensions: Mounting Depth: 6.23 in Cutout Diameter: 11.34 in Frame Outside Diameter: 12.94 in Enclosure Recommendations: Single Sub Sealed: 1.5 cf. Dual Subs Sealed: 2.7 cf. Single Sub Vented: 2.5 cf. Port Dimensions: 5"x5"x27"L Tuning Frequency: 36 Hz Dual Sub Vented: 4.6 cf. Port Dimensions: 7" x 6" x 23"L Tuning Frequency: 36 Hz