The MB12N351 is designed to provide an excellent frequency response linearity with very low distortion. A very strong neodymium magnetic structure guarantee dynamic and precision, a new and unique 3.5" voice coil design provides a very high power handling, especially recommended in comparison to a standard 3" voice coil. The unique Dual-forced air venting system guarantee a very efficient voice coil ventilation to minimize the power compression and provide higher power handling.
• 3.5-inch, fiberglass inside/outside copper voice coil
• 1300W continuous program power handling
• 99 dB Sensitivity
• 45 Hz 3 kHz Frequency range
• Dual-forced air ventilation for minimum power compression
• Single spider design with silicon based damping control
General specifications
Cone Design: Curved
Dual-force air ventilation: Yes
Effective piston diameter: 260 mm / 10.24 inch
Frequency range: 45 - 3000 Hz
Kind of layers: inside/outside
Magnets: Neodymium
Max. Excursion Before Damage: 39 mm / 1.54 inch
Minimim Impedance: 7 ohm
Nominal Diameter: 12 inch / 305 mm
Number of layers: 2
Power handling capacity: 650 W
Program Power: 1300 W
Rated Impedance: 8 ohm
Sensitivity: 99 dB
Spider: Single with silicon based damping control
Surround Design: M-roll
Surround Material: Polycotton
Top Plate Thickness: 11 mm / 0.43 inch
Voice Coil Diameter: 3.5 inch / 89 mm
Voice Coil Material: Copper
Voice Coil Winding Material: 17 mm / 0.67 inch
Mounting Information
Bolt circle diameter: 293-304 mm / 11.54-11.97 inch
Bolt hole diameter: 7 mm / 0.28 inch
Front mount baffle cut-out: 282 mm / 11.1 inch
Overall diameter: 320 mm / 12.6 inches
Rear mount baffle cut-out: 284 mm / 11.18 inch
Volume occupied by the driver: 2.2 liters / 0.09 ft3
Size
Diameter: 320 mm / 12.6 inches
Height: 151 mm / 5.94 inches
Weight: 4.5 kg / 9.92 lbs
Standard compliance
CE marking: Yes
Thiele - small parameters
BL factor (BL): 22.50 T x m
DC resistance (Re): 5.60 ohm
Effective moving mass (Mms): 54 gr
Effettive piston area (Sd): 0.05 m2
Electrical factor (Qes): 0.21 Qes
Equivalent Cas air loaded (Vas): 61 liters
Half-space efficency (Eff): 4.66%
Max. linear excursion (Xmax): 6 mm
Mechanical factor: 4.50 Qms
Resonance frequency (Fs): 55 Hz
Total factor: 0.20 Qts
Voice coil inductance @ 1kHz (Le1k):1.65 mH
California Prop 65 -
WARNING: Cancer and Reproductive Harm -
www.P65Warnings.ca.gov