RCF - MR8N301 High efficiency 8'' Midrange

The MR10N301 is a high efficiency, high power midrange specially designed to provide superior sound pressure level in a very compact size. The total weight is reduced to less than half of a comparable ceramic midrange thanks to an incredibly powerful neodymium magnet assembly. The unique sealed basket design doesn’t require a back sealing chamber, simplifying the cabinet design and improving heat dissipation. Every detail of this speaker has been optimized to offer the best response and perfect control to the midrange frequencies.

Applications
The MR10N301 is especially designed for horn-loading and line array configurations. The ideal range of application are mid and mid-low frequencies. The combination of the 3” voice coil, the neodymium motor and the heat sink basket design makes this driver the ideal solution for the most demanding applications.

Inch Inside/outside voice coil, high BL neodymium design
500 Watt Continuous program power handling
Very high sensitivity (107 dB/1w in horn loaded application), very high BL factor
Frequency range: 300 Hz – 3 kHz (mid and mid-high frequencies)
Unique aluminum sealed basket featuring vented fin heat dissipation design
Calibrated back volume for a perfect time domain transient reproduction

GENERAL SPECIFICATIONS
Nominal Diameter 200/8 mm/inch
Rated Impedance 8 Ohm
Program Power 400 Watts
Power handling capacity 200 Watts
Sensitivity 102 dB
Frequency Range 300-3000 Hz
Effective Piston Diameter 168.6.6 mm/inch
Maximum Excursion Before Damage (peak to peak) 15/0.6 mm/inch
Minimum Impedance 9.8 Ohm
Voice Coil Diameter 76/3 mm/inch
Voice Coil Material Aluminium
Voice Coil Winding Depth 11/0.4 mm/inch
Number of layers 2
Kind of layer Inside/Outside
Top Plate Thickness 8/0.3 mm/inch
Cone Material No pressed pulp
Cone Design Curved
Surround Material Polycotton
Surround Design Triple roll

THIELE – SMALL PARAMETERS
Resonance frequency Fs 310 Hz
DC resistance Re 6.6 Ohm
Mechanical factor Qms 3.45
Electrical factor Qes 0.41
Total factor Qts 0.37
BL factor BL 17.8 T – m
Effective Moving Mass Mms 10.1 gr
Equivalent Cas air load Vas 1.65 liters
Effective piston area Sd 0.021 m2
Max. linear excursion (mathematical) Xmax 3.5 mm
Voice – coil inductance @ 1kHz Le1k 1.16 mH
Half-space efficiency Eff 12.8 %

MOUNTING INFORMATION
Overall Diameter 238/9.4 mm/inch
Bolt Circle Diameter 220/8.7 mm
Bolt Hole Diameter 6.5/0.3 mm/inch
Front Mount Baffle Cut-out 202/8.0 mm/inch
Rear Mount Baffle Cut-out 182/7.2 mm/inch
Depth 101.5/4.0 mm/inch
Volume occupied by the driver 2/0.07 liters/ft3

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