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.

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 Specification

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

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