RCF MB12X351 12" Mid-Bass Speaker Driver 1400W 3.5" Copper Voice Coil

The RCF MB12X351 is a high-performance 12" mid-bass speaker designed for professional sound reinforcement where power, precision, and reliability are essential. Featuring a unique 3.5" fiberglass inside/outside copper voice coil and a robust ceramic magnet structure, the MB12X351 offers 1400W program power handling and exceptional sensitivity of 98.5 dB. Its extended frequency range from 45 Hz to 2.5 kHz makes it ideal for high-output, low-distortion applications. Equipped with dual forced air ventilation and an M-roll polycotton surround, this driver ensures low power compression and reliable performance in demanding conditions.

Features
3.5" fiberglass inside/outside copper voice coil for enhanced thermal stability and power handling
1400W program power / 700W AES power handling capacity
98.5 dB sensitivity for efficient SPL output
Wide frequency response from 45 Hz to 2.5 kHz
Dual-force hyper-venting system minimizes power compression
Ceramic magnet for dynamic response and low distortion
Curved cone with M-roll polycotton surround for controlled excursion
Optimized for low distortion and smooth frequency response
Designed for mid-bass use in high-performance professional audio systems

Specifications
Nominal Diameter: 12" / 305 mm
Rated Impedance: 8 Ohm
Program Power: 1400 W
AES Power Handling: 700 W
Sensitivity: 98.5 dB
Frequency Range: 45 Hz – 2500 Hz
Minimum Impedance: 7.1 Ohm
Effective Piston Diameter: 260 mm / 10.24 in
Max Excursion Before Damage: 40 mm / 1.57 in

Voice Coil
– Diameter: 3.5" / 89 mm
– Length: 19 mm / 0.75 in
– Material: Copper
– Type: Inside/Outside Winding (2 Layers)
– Former Material: Fiberglass

Mechanical Design
– Magnet Type: Ceramic
– Ventilation: Dual Forced Air
– Surround Material: Polycotton
– Surround Design: M-Roll
– Cone Design: Curved
– Spider: Single

Mounting Information
Overall Diameter: 320 mm / 12.6 in
Bolt Circle Diameter: 293–304 mm / 11.54–11.97 in
Bolt Hole Diameter: 7 mm / 0.28 in
Front Mount Baffle Cut-Out: 282 mm / 11.1 in
Rear Mount Baffle Cut-Out: 284 mm / 11.18 in
Volume Occupied by Driver: 2.2 liters / 0.09 ft³

Compliance
Standard: CE Compliant

Size & Weight
Height: 143 mm / 5.63 in
Diameter: 320 mm / 12.6 in
Weight: 7.6 kg / 16.76 lbs