RCF MB 15 X 301

The MB15X301 is designed to provide an excellent frequency response linearity with very low distortion. A strong magnetic structure guarantee dynamic and precision. The new dual forced hyper-venting system guarantee a very efficient voice coil ventilation for minimum power compression and incredible power handling. Triple roll surround and spider design offer great linearity and precise reproduction.

More Information

3-inch, fibreglass inside/outside aluminium voice coil
1000W continuous program power handling
98.5 dB Sensitivity
40 Hz 3.0 kHz Frequency range
Dual Forced Hyperventing System
Triple roll surround and exponential cone geometry

Technical Specification

General specifications
Cone Design: Curved
Effective piston diameter: 330 mm / 12.99 inch
Frequency range: 40 - 3000 Hz
Hypervented magnetic structure: Yes
Kind of layers: inside/outside
Magnets: Ceramic
Max. Excursion Before Damage: 40 mm / 1.57 inch
Minimim Impedance: 6 ohm
Nominal Diameter: 15 inch / 381 mm
Number of layers: 2
Power handling capacity: 500 W
Program Power: 1000 W
Rated Impedance: 8 ohm
Sensitivity: 98 dB
Spider: Single
Surround Design: Triple roll
Surround Material: Polycotton
Top Plate Thickness: 10 mm / 0.39 inch
Voice Coil Diameter: 3.0 inch / 76 mm
Voice Coil Material: Aluminium
Voice Coil Winding Material: 17 mm / 0.67 inch

Mounting Information
Bolt circle diameter: 371-376 mm / 14.61-14.8 inch
Bolt hole diameter: 7 mm / 0.28 inch
Front mount baffle cut-out: 354 mm / 13.94 inch
Overall diameter: 393 mm / 15.47 inches
Rear mount baffle cut-out: 354 mm / 13.94 inch
Volume occupied by the driver: 4.5 liters / 0.18 ft3

Size
Diameter: 393 mm / 15.47 inches
Height: 167 mm / 6.57 inches
Weight: 8 kg / 17.64 lbs

Standard compliance
CE marking: Yes

Thiele - small parameters
BL factor (BL): 18.00 T x m
DC resistance (Re): 5.40 ohm
Effective moving mass (Mms): 92 gr
Effettive piston area (Sd): 0.09 m2
Electrical factor (Qes): 0.37 Qes
Equivalent Cas air loaded (Vas): 195 liters
Half-space efficency (Eff): 2.80%
Max. linear excursion (Xmax): 6 mm
Mechanical factor: 5.00 Qms
Resonance frequency (Fs): 38 Hz
Total factor: 0.34 Qts
Voice coil inductance @ 1kHz (Le1k): 0.52 mH

View full details