Overview3.5-inch, fiberglass inside/outside copper voice coil 1400W continuous program power handling 98.5 dB Sensitivity 45 Hz – 2.5 kHz Frequency range Specifications
The MB12X351 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 new dual forced hyper-venting system guarantee a very efficient voice coil ventilation for minimum power compression and incredible power handling.
Features General specifications
Nominal Diameter : 12 inch / 305 mm
Rated Impedance : 8 ohm
Program Power (watt) : 1400 W
Power handling capacity : 700 W
Sensitivity : 98.5 dB
Frequency range : 45 - 2500 Hz
Effective piston diameter : 260 mm / 10.24 inch
Max. Excursion Before Damage : 40 mm / 1.57 inch
Minimum Impedance (ohm) : 7.1 ohm
Voice Coil Diameter : 3.5 inch / 89 mm
Voice Coil Winding Material : Copper
Voice Coil Length : 19 mm / 0.75 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 : Ceramic
Dual-force air ventilation : Yes
Spider : 03
Thiele - small parameters
Resonance frequency (Fs) : 55 Hz
DC resistance (Re) (ohm) : 5.40 ohm
Mechanical factor : 5.90 Qms
Electrical factor : 0.27 Qes
Total factor : 0.26 Qts
Bl factor (Bl) (T x m) : 22.50 T x m
Effective moving mass (Mms) : 72.0 g
Equivalent Cas air loaded (Vas) : 46.0 liters
Effective piston area (Sd) : 0.050 m2
Max. linear excursion (Xmax) : 7 mm
Voice coil inductance @ 1kHz (Le1k) : 0.90 mH
Half-space efficency (Eff) : 3.00%
Mounting information
Overall diameter : 320 mm / 12.6 inches
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
Rear mount baffle cut-out : 284 mm / 11.18 inch
Volume occupied by the driver : 2.2 liters / 0.09 ft3
Standard compliance
Safety agency : CE compliant
Size / Weight
Height : 143 mm / 5.63 inches
Diameter : 320 mm / 12.6 inches
Weight : 7.6 kg / 16.76 lbs
Shipping information
Package Height : 194 mm / 7.64 inches
Package Width : 354 mm / 13.94 inches
Package Depth : 364 mm / 14.33 inches
Package Weight : 8.4 kg / 18.52 lbs
