RCF MB 15 X 351

RCF MB 15 X 351

The MB15N351 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.


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Product details

More Information
  • 3.5-inch, fiberglass inside/outside copper voice coil
  • 1400W continuous program power handling
  • 99 dB Sensitivity
  • 40 Hz – 2.5 kHz Frequency range
  • Dual Forced Hyperventing System
  • Dual spider design with silicon based dampening control
  • M-roll surround and corrugated straight cone geometry
Technical Specifications

General Specifications:

  • Nominal Diameter:380 mm / 15 inch
  • Rated Impedance:8 Ohms
  • Program Power:1400 W AES
  • Power handling capacity:700 W AES
  • Sensitivity:99 dB
  • Frequency Range:40-2500 Hz
  • Effective Piston Diameter:330 mm / 13 inch
  • Max Excursion Before Damage (peak to peak):40 mm / 1.57 inch
  • Minimum Impedance:6.5 Ohms
  • Voice Coil Diameter:87 mm / 3.4 inch
  • Voice Coil Material:Copper
  • Voice Coil Winding Depth:19 mm / 0.74 inch
  • Number of layers:2
  • Kind of layer:inside / outside
  • Top Plate Thickness:10 mm / 0.39 inch
  • Cone Material:No pressed pulp
  • Cone Design:Straight
  • Surround Material:Polycotton
  • Surround Design:M-roll

Thiele Small Parameters:

  • Resonance frequency:46 Hz
  • DC resistance:5.4 Ohms
  • Mechanical factor:6.7
  • Electrical factor:0.33
  • Total factor:0.31
  • BL Factor:22.8 T · m
  • Effective Moving Mass:106 g
  • Equivalent Cas air load:114 liters
  • Effective piston area:0.086 sq m
  • Max. linear excursion (mathematical):7.0 mm
  • Voice - coil inductance @ 1kHz:1,5 mH
  • Half-space efficiency:3.20%

Mounting Information:

  • Overall Diameter:393 mm / 15.5 inch
  • Bolt Circle Diameter:371-376 mm / 14.6-14.8 inch
  • Bolt Hole Diameter:6.5 mm / 0.3 inch
  • Front Mount Baffle Cut-out:354 mm / 13.9 inch
  • Rear Mount Baffle Cut-out:354 mm / 13.9 inch
  • Depth:151 mm / 5.94 inch
  • Volume occupied by the driver:4.5 litres / 0.153 cu ft
  • Net Weight:8.2 kg / 18.04 lbs
  • Shipping weight:9 kg / 19.8 lbs