The MB12N301 is a neodymium, high efficiency, 12" mid-bass. High sensitivity, excellent linearity and very high power handling capabilities. The magnetic structure is powered by a large neodymium magnet that provides an extremely high flux density in the gap. The new hyper-vented aluminium basket and magnetic assembly design provide an excellent heat dissipation and lower power compression. Special air-forced ventilations are provided for voice coil, magnet assembly and basket. M-roll surround and spider design offer great linearity and precise reproduction.
• 3.0-inch, fibreglass inside/outside copper voice coil
• 1000 Watt continuous program power handling
• 98.5dB Sensitivity
• 50Hz 3.0KHz Frequency range
• Dual-forced air ventilation for minimum power compression
• M-roll surround and exponential cone geometry
General specifications
Cone Design: Curved
Dual-force air ventilation: Yes
Effective piston diameter: 260 mm / 10.24 inch
Frequency range: 50 - 3000 Hz
Kind of layers: inside/outside
Magnets: Neodymium
Max. Excursion Before Damage: 34 mm / 1.34 inch
Minimim Impedance: 6 ohm
Nominal Diameter: 12 inch / 305 mm
Number of layers: 2
Power handling capacity: 500 W
Program Power: 1000 W
Rated Impedance: 8 ohm
Sensitivity: 98 dB
Spider: Single
Surround Design: M-roll
Surround Material: Polycotton
Top Plate Thickness: 10 mm / 0.39 inch
Voice Coil Diameter: 3.0 inch / 76 mm
Voice Coil Material: Aluminium
Voice Coil Winding Material: 17 mm / 0.67 inch
Mounting Information
Bolt circle diameter: 295-304 mm / 11.61-11.97 inch
Bolt hole diameter: 6 mm / 0.24 inch
Front mount baffle cut-out: 288 mm / 11.34 inch
Overall diameter: 320 mm / 12.6 inches
Rear mount baffle cut-out: 288 mm / 11.34 inch
Volume occupied by the driver: 2.2 liters / 0.09 ft3
Size
Diameter: 320 mm / 12.6 inches
Height: 146 mm / 5.75 inches
Weight: 3.4 kg / 7.5 lbs
Standard compliance
CE marking: Yes
Thiele - small parameters
BL factor (BL): 19.00 T x m
DC resistance (Re): 5.80 ohm
Effective moving mass (Mms): 48 gr
Effettive piston area (Sd): 0.05 m2
Electrical factor (Qes): 0.26 Qes
Equivalent Cas air loaded (Vas): 71 liters
Half-space efficency (Eff): 4.00%
Max. linear excursion (Xmax):6 mm
Mechanical factor: 3.10 Qms
Resonance frequency (Fs): 54 Hz
Total factor: 0.24 Qts
Voice coil inductance @ 1kHz (Le1k): 1.80 mH
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