RCF 15" Speaker, 350W, 100dB, 40-3000Hz, X-max 6.5mm, weight 9.5kg High-power 15" mid-bass speaker with exceptional sensitivity, linearity, and low distortion. The design includes a radiator for efficient heat dissipation and a sealed spider for forced air circulation. Features: - 3-inch edgewound aluminum voice coil - 700W continuous program power handling - 100 dB Sensitivity - 40 Hz – 3 kHz Frequency range - Spider dampening treatment - M-roll surround and exponential cone geometry General Specifications: - Nominal Diameter: 380 / 15 mm/inch - Rated Impedance: 8 ohm - Program Power: 700 W AES - Power handling capacity: 350 W AES - Sensitivity: 100 dB - Frequency Range: 40 Hz ÷ 3000 Hz - Effective Piston Diameter: 330 / 13 mm/inch - Max Excursion Before Damage (peak to peak): 36 / 1.4 mm/inch - Minimum Impedance: 5.9 ohm - Voice Coil Diameter: 76 / 3 mm/inch - Voice Coil Material: Aluminum - Voice Coil Winding Depth: 18 / 0.7 mm/inch - Number of layers: 1 - Kind of layer: outside - Top Plate Thickness: 10 / 0.4 mm/inch - Cone Material: No pressed pulp - Cone Design: Curved - Surround Material: Polycotton - Surround Design: M-roll Thiele/Small Parameters: - Resonance frequency: 45 Hz - DC resistance: 5.1 ohm - Mechanical factor: 7.5 - Electrical factor: 0.51 - Total factor: 0.48 - BL Factor: 15.3 T · m - Effective Moving Mass: 83 g - Equivalent Cas air load: 160 liters - Effective piston area: 0.085 m2 - Max. linear excursion (mathematical): 6.5 mm - Voice-coil inductance @ 1kHz: 1.45 mH - Half-space efficiency: 2.76% Mounting information: - Overall Diameter: 387 / 15.2 mm/inch - Bolt Circle Diameter: 371 / 14.6 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 / 14.1 mm/inch - Depth: 163 / 6.4 mm/inch - Volume occupied by the driver: 3.8 / 0.13 liters/ft3 - Net Weight: 9.5 / 20.9 kg/lbs Shipping information: - Shipping weight: 10 / 22.0 kg/lbs