Speaker 10", 300W, 97dB, 50-3500Hz, X-max 4.8mm, weight 2.2kg The MB10N251 is a 10” neodymium mid-bass driver with exceptional linearity, high efficiency, and robust power handling capabilities. Featuring a 2.5” aluminum voice coil and a high-strength fiberglass former, it delivers high efficiency and extended frequency response. The aluminum basket and magnetic assembly design ensure excellent heat dissipation and minimal power compression. The M-roll surround shape and spider design provide precise low-frequency reproduction and linear displacement. Features: - 2.5-inch fiberglass former, aluminum voice coil - 600 Watt continuous program power handling - 97 dB Sensitivity - 50 Hz - 3.5kHz Frequency range - Forced air ventilation - M-roll surround and exponential cone geometry General Specifications: - Nominal Diameter: 250 / 10 mm/inch - Rated Impedance: 8 ohm - Program Power: 600 W AES - Power handling capacity: 300 W AES - Sensitivity: 97 dB - Frequency Range: 50 Hz ÷ 3500 Hz - Effective Piston Diameter: 210 / 8.27 mm/inch - Max Excursion Before Damage (peak to peak): 40 / 1.57 mm/inch - Minimum Impedance: 6.4 ohm - Voice Coil Diameter: 64 / 2.51 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: 55 Hz - DC resistance: 5.1ohm - Mechanical factor: 4.1 - Electrical factor: 0.29 - Total factor: 0.27 - BL Factor: 15.2 T · m - Effective Moving Mass: 36 g - Equivalent Cas air load: 38.8 liters - Effective piston area: 0.035 m2 - Max. linear excursion (mathematical): 4.8 mm - Voice-coil inductance @ 1kHz: 1.3 mH - Half-space efficiency: 2.20% Mounting information: - Overall Diameter: 260 / 10.24 mm/inch - Bolt Circle Diameter: 241-246 / 9.5-9.6 mm/inch - Bolt Hole Diameter: 5.5 / 0.21 mm/inch - Front Mount Baffle Cut-out: 234 / 9.21 mm/inch - Rear Mount Baffle Cut-out: 234 / 9.21 mm/inch - Depth: 113 / 4.45 mm/inch Volume occupied by the driver: 1.2 / 0.04 liters/ft3 - Net Weight: 2.2 / 4.85 kg/lbs Shipping information: - Shipping weight: 2.4 / 5.29 kg/lbs