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PRECISION TRANSDUCERS

MB12N251

MID - BASS

2.5-inch , fibreglass former, aluminum voice coil
600 Watt continuous program power handling
98 dB Sensitivity
45 Hz - 3.0 kHz Frequency range

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Features

2.5-inch , fibreglass former, aluminum voice coil
600 Watt continuous program power handling
98 dB Sensitivity
45 Hz - 3.0 kHz Frequency range
Forced air ventilation
M-roll surround and exponential cone geometry

The MB12N251 is a 12” neodymium mid-bass driver with an excellent linearity, good efficiency and high power handling capabilities. The 2,5” aluminium voice coil combined with a high strength fibreglass former allows high efficiency and good frequency response extension. Aluminium basket and magnetic assembly design provide an excellent heat dissipation and very low power compression. The Triple-roll shape combined to spider design offer very low distortion and extended low frequency reproduction.

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Part number:

11100065
MB12N251
8ohm

Specifications

General specifications

Nominal Diameter

12 inch / 305 mm

Rated Impedance

8 ohm

Program Power (watt)

600 W

Power handling capacity

300 W

Sensitivity

98.0 dB

Frequency range

45 - 3000 Hz

Effective piston diameter

260 mm / 10.24 inch

Max. Excursion Before Damage

38 mm / 1.5 inch

Minimum Impedance (ohm)

6.0 ohm

Voice Coil Diameter

2.5 inch / 63 mm

Voice Coil Winding Material

Aluminum

Voice Coil Length

14 mm / 0.55 inch

Number of layers

Kind of layers

outside

Top Plate Thickness

9 mm / 0.35 inch

Cone Design

Curved

Surround Material

Polycotton

Surround Design

Triple roll

Magnets

Neodymium

Dual-force air ventilation

Yes

Spider

Thiele - small parameters

Resonance frequency (Fs)

50 Hz

DC resistance (Re) (ohm)

5.10 ohm

Mechanical factor

5.40 Qms

Electrical factor

0.36 Qes

Total factor

0.34 Qts

Bl factor (Bl) (T x m)

15.00 T x m

Effective moving mass (Mms)

49.0 g

Equivalent Cas air loaded (Vas)

83.0 liters

Effective piston area (Sd)

0.500 m2

Max. linear excursion (Xmax)

5 mm

Voice coil inductance @ 1kHz (Le1k)

1.30 mH

Half-space efficency (Eff)

2.70%

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

143 mm / 5.63 inches

Diameter

320 mm / 12.6 inches

Weight

2.58 kg / 5.69 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

3.67 kg / 8.09 lbs

Downloads

SPECIFICATIONS

SPECSHEET - ENG

PDF

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19-08-2024

ACOUSTIC MEASUREMENTS

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11-07-2024

DRAWINGS

LINE ART 2D

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728 KB

21-03-2018

Icone allineate