Features
  • 4-inch, fibreglass inside/outside aluminium voice coil
  • 2000W continuous program power handling
  • 98.5 dB Sensitivity
  • 50 Hz – 2 kHz Frequency range
  • Dual-forced air ventilation for minimum power compression
  • Triple roll surround and exponential cone geometry

The MB12N405 is a hypervented neo mid-bass design with a linear frequency response and very high efficiency. To get this performance the magnetic structure use a high flux neo disc and the cone assembly a fibre loaded exponential shape along with a high excursion triple roll, constant geometry surround. The fibreglass former and aluminium voice coil provide a very high power handling maintaining a light mass and a proper Q factor for bass alignment.

Part number:

11100112
MB12N405
8ohm

Specifications
General specifications
Nominal Diameter:
12 inch / 305 mm
Rated Impedance:
8 ohm
Program Power (watt):
2000 W
Power handling capacity:
1000 W
Sensitivity:
98.5 dB
Frequency range:
50 - 2000 Hz
Effective piston diameter:
260 mm / 10.24 inch
Max. Excursion Before Damage:
53 mm / 2.09 inch
Minimum Impedance (ohm):
6.6 ohm
Voice Coil Diameter:
4.0 inch / 102 mm
Voice Coil Length:
20 mm / 0.79 inch
Number of layers:
2
Kind of layers:
inside/outside
Top Plate Thickness:
12 mm / 0.47 inch
Cone Design:
Curved
Surround Design:
Triple roll
Hypervented magnetic structure:
Yes
Thiele - small parameters
Resonance frequency (Fs):
52 Hz
DC resistance (Re) (ohm):
5.00 ohm
Mechanical factor:
6.00 Qms
Electrical factor:
0.21 Qes
Total factor:
0.20 Qts
Bl factor (Bl) (T x m):
23.50 T x m
Effective moving mass (Mms):
73.0 g
Equivalent Cas air loaded (Vas):
53.0 liters
Effective piston area (Sd):
0.050 m2
Max. linear excursion (Xmax):
7 mm
Voice coil inductance @ 1kHz (Le1k):
1.20 mH
Half-space efficency (Eff):
3.31%
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:
2.9 liters / 0.11 ft3
Size
Height:
133 mm / 5.24 inches
Diameter:
320 mm / 12.6 inches
Weight:
7.7 kg / 16.98 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:
8.7 kg / 19.18 lbs
Downloads
SPECSHEETS
PDF
653 KB
22-01-2024
DRAWINGS
PDF
409 KB
21-03-2018