RCF MB8N251, Mid-Bass 8", 300 Watt RMS / 8 Ohm

The MB8N251 is a 8" 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 M-roll surround shape combined to spider design offer good linear displacement and precise low frequency reproduction.

Features 2.5-inch , fibreglass former, aluminum voice coil 600 Watt continuous program power handling 96 dB Sensitivity 60 Hz - 3.5kHz Frequency range Forced air ventilation M-roll surround and exponential cone geometry

General Specifications Nominal Diameter: 200 / 8 mm/inch Rated Impedance: 8 Ohm Program Power: 600 W AES Power handling capacity: 300 W AES Sensitivity: 96 dB Frequency Range: 60 Hz ÷ 3500 Hz Effective Piston Diameter: 165 / 6.5 mm/inch Max Excursion Before Damage (peak to peak): 40 / 1.57 mm/inch Minimum Impedance: 6.0 Ohm Voice Coil Diameter: 64 / 2.50 mm/inch Voice Coil Material: Aluminum Voice Coil Winding Depth: 14 / 0.55 mm/inch Number of layers: 1 Kind of layer: outside Top Plate Thickness: 9 / 0.35 mm/inch Cone Material: No pressed pulp Cone Design: Curved Surround Material: Polycotton Surround Design: M - roll

Thiele/Small Parameters Resonance frequency: 68 Hz DC resistance: 5.1 Ohm Mechanical factor: 4.6 Electrical factor: 0.26 Total factor: 0.25 BL Factor: 15.2 T · m Effective Moving Mass: 27.2 g Equivalent Cas air load: 12.8 liters Effettive piston area: 0.021 m² Max. linear excursion (mathematical): 4.8 mm Voice - coil inductance @ 1kHz: 1.3 mH Half-space efficiency: 1.70%

Mounting information Overall Diameter: 239 / 9.41 mm/inch Bolt Circle Diameter: 221-227 / 8.70-8.93 mm/inch Bolt Hole Diameter: 6.5 / 0.26 mm/inch Front Mount Baffle Cut-out: 185 / 7.28 mm/inch Rear Mount Baffle Cut-out: 185 / 7.28 mm/inch Depth: 92.5 / 3.64 mm/inch Volume occupied by the driver: 0.6 / 0.02 liters/ft³ Net Weight: 2.0 / 4.41 kg/lbs