MB12N405 Mid - Bass
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.
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
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 Winding Material |
Aluminum |
| 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 Material |
Polycotton |
| Surround Design |
Triple roll |
| Magnets |
Neodymium |
| Hypervented magnetic structure |
Yes |
| Spider |
01 |
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 |
Standard compliance
| Safety agency |
CE compliant |
Size / Weight
| 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 |
