RCF 15" Speaker, 600W, 99dB, 40-2000Hz, X-max 5.8mm, weight 11.3kg. The RCF 15" speaker boasts very high efficiency and excellent linearity, making it a standout mid-bass woofer. Equipped with a Kapton forme voice coil, polycotton suspensions, and a treated cone, this transducer ensures exceptional power handling capabilities. Features: • 4-inch fiberglass inside/outside copper voice coil • 1200W continuous program power handling • 99 dB Sensitivity • 40 Hz – 2 kHz Frequency range • M-roll damped surround • Exponential damped cone • Copper ring General Specifications: • Nominal Diameter: 380 / 15 mm/inch • Rated Impedance: 8 ohm • Program Power: 1200 W AES • Power handling capacity: 600 W AES • Sensitivity: 99 dB • Frequency Range: 40 Hz ÷ 2000 Hz • Effective Piston Diameter: 325 / 12.8 mm/inch • Max Excursion Before Damage (peak to peak): 44 / 1.73 mm/inch • Minimum Impedance: 7.9 ohm • Voice Coil Diameter: 100 / 4 mm/inch • Voice Coil Material: Copper • Voice Coil Winding Depth: 16 / 0.6 mm/inch • Number of layers: 2 • Kind of layer: inside / 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: 35 Hz • DC resistance: 6.6 ohm • Mechanical factor: 8.6 • Electrical factor: 0.25 • Total factor: 0.24 • BL Factor: 23 T · m • Effective Moving Mass: 91 g • Equivalent Cas air load: 227 liters • Effective piston area: 0.083 m2 • Max. linear excursion (mathematical): 5.8 mm • Voice-coil inductance @ 1kHz: 1.7 mH • Half-space efficiency: 3.75% 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: 358 / 14.1 mm/inch • Rear Mount Baffle Cut-out: 362 / 14.2 mm/inch • Depth: 138 / 5.4 mm/inch • Volume occupied by the driver: 3.8 / 0.13 liters/ft3 • Net Weight: 11.3 / 24.9 kg/lbs Shipping information: • Shipping weight: 11.8 / 26.0 kg/lbs Explore the powerful and reliable RCF 15" speaker for your audio needs.