RCF 15" Speaker, 700W, 100dB, 40-2000Hz, X-max 7.5mm, weight 12.2kg The MB15H401 is a 15-inch woofer known for its linear frequency response and high efficiency. It features a fiber-loaded exponential cone assembly with a high excursion triple roll, constant geometry surround. The fiberglass former and inside/outside aluminum voice coil offer excellent power handling while maintaining a light moving mass and proper Q for bass alignment. Additionally, it includes a demodulation ring for fast response time and low distortion. Features: - 4-inch fiberglass inside/outside aluminum voice coil - 1400W continuous program power handling - 100 dB Sensitivity - 40 Hz – 2 kHz Frequency range - Dual spider design with silicon-based dampening control - Triple-roll surround and corrugated straight cone geometry - Aluminum demodulation ring General Specifications: - Nominal Diameter: 380 / 15 mm/inch - Rated Impedance: 8 ohm - Program Power: 1400 W AES - Power handling capacity: 700 W AES - Sensitivity: 100 dB - Frequency Range: 40 Hz ÷ 2000 Hz - Effective Piston Diameter: 340 / 13.4 mm/inch - Max Excursion Before Damage (peak to peak): 50 / 2.0 mm/inch - Minimum Impedance: 7.0 ohm - Voice Coil Diameter: 100 / 4 mm/inch - Voice Coil Material: Aluminum - Voice Coil Winding Depth: 21 / 0.8 mm/inch - Number of layers: 2 - Kind of layer: inside / outside - Top Plate Thickness: 12 / 0.5 mm/inch - Cone Material: No pressed pulp - Cone Design: Curved - Surround Material: Polycotton - Surround Design: Triple roll Thiele/Small Parameters: - Resonance frequency: 44 Hz - DC resistance: 5.4 ohm - Mechanical factor: 4.8 - Electrical factor: 0.32 - Total factor: 0.30 - BL Factor: 22.1 T · m - Effective Moving Mass: 107 g - Equivalent Cas air load: 121 liters - Effective piston area: 0.091 m2 - Max. linear excursion (mathematical): 7.5 mm - Voice-coil inductance @ 1kHz: 1.9 mH - Half-space efficiency: 3.11% Mounting information: - Overall Diameter: 393 / 15.5 mm/inch - Bolt Circle Diameter: 371-376 / 14.6-14.8 mm/inch - Bolt Hole Diameter: 6.5 / 0.3 mm/inch - Front Mount Baffle Cut-out: 352 / 13.9 mm/inch - Rear Mount Baffle Cut-out: 360 / 14.2 mm/inch - Depth: 158 / 6.2 mm/inch - Volume occupied by the driver: 4.3 / 0.15 liters/ft3 - Net Weight: 12.2 / 26.8 kg/lbs Shipping information: - Shipping weight: 12.8 / 28.4 kg/lbs