Overview3.0-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 Specifications
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.
Features General specifications
Nominal Diameter : 12 inch / 305 mm
Rated Impedance : 8 ohm
Program Power (watt) : 1000 W
Power handling capacity : 500 W
Sensitivity : 98.5 dB
Frequency range : 50 - 3000 Hz
Effective piston diameter : 260 mm / 10.24 inch
Max. Excursion Before Damage : 34 mm / 1.34 inch
Minimum Impedance (ohm) : 6.7 ohm
Voice Coil Diameter : 3.0 inch / 76 mm
Voice Coil Winding Material : Aluminum
Voice Coil Length : 17 mm / 0.67 inch
Number of layers : 2
Kind of layers : inside/outside
Top Plate Thickness : 10 mm / 0.39 inch
Cone Design : Curved
Surround Material : Polycotton
Surround Design : M-roll
Magnets : Neodymium
Dual-force air ventilation : Yes
Spider : 01
Thiele - small parameters
Resonance frequency (Fs) : 54 Hz
DC resistance (Re) (ohm) : 5.80 ohm
Mechanical factor : 3.10 Qms
Electrical factor : 0.26 Qes
Total factor : 0.24 Qts
Bl factor (Bl) (T x m) : 19.00 T x m
Effective moving mass (Mms) : 48.0 g
Equivalent Cas air loaded (Vas) : 71.0 liters
Effective piston area (Sd) : 0.050 m2
Max. linear excursion (Xmax) : 6 mm
Voice coil inductance @ 1kHz (Le1k) : 1.80 mH
Half-space efficency (Eff) : 4.00%
Mounting information
Overall diameter : 320 mm / 12.6 inches
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
Rear mount baffle cut-out : 288 mm / 11.34 inch
Volume occupied by the driver : 2.2 liters / 0.09 ft3
Standard compliance
Safety agency : CE compliant
Size / Weight
Height : 146 mm / 5.75 inches
Diameter : 320 mm / 12.6 inches
Weight : 3.4 kg / 7.5 lbs
Shipping information
Package Height : 194 mm / 7.64 inches
Package Width : 364 mm / 14.33 inches
Package Depth : 354 mm / 13.94 inches
Package Weight : 4.2 kg / 9.26 lbs
