Speaker 15", 500W, 99dB, 40-3500Hz, X-max 6mm, weight 3.7kg The MB15N301 is a neodymium, high-efficiency 15” mid-bass speaker known for its high sensitivity, excellent linearity, and exceptional power handling capabilities. Its magnetic structure is driven by a large neodymium magnet, providing a high flux density in the gap. The innovative hyper-vented aluminum basket and magnetic assembly design ensure excellent heat dissipation and reduced power compression. Special air-forced ventilations are incorporated for the voice coil, magnet assembly, and basket. The M-roll surround and spider design contribute to outstanding linearity and precise sound reproduction. Features: - 3.0-inch fiberglass inside/outside copper voice coil - 1000 Watt continuous program power handling - 99 dB Sensitivity - 40Hz – 3.5KHz Frequency range - Dual-forced air ventilation for minimum power compression - Triple-roll surround and exponential cone geometry General Specifications: - Nominal Diameter: 380 / 15 mm/inch - Rated Impedance: 8 ohm - Program Power: 1000 W AES - Power handling capacity: 500 W AES - Sensitivity: 99 dB - Frequency Range: 40 Hz ÷ 3500 Hz - Effective Piston Diameter: 330 / 13.0 mm/inch - Max Excursion Before Damage (peak to peak): 40 / 1.57 mm/inch - Minimum Impedance: 6.8 ohm - Voice Coil Diameter: 76 / 3.0 mm/inch - Voice Coil Material: Aluminium - Voice Coil Winding Depth: 17 / 0.76 mm/inch - Number of layers: 2 - Kind of layer: inside / outside - Top Plate Thickness: 10 / 0.39 mm/inch - Cone Material: No pressed pulp - Cone Design: Curved - Surround Material: Polycotton - Surround Design: Triple roll Thiele/Small Parameters: - Resonance frequency: 48 Hz - DC resistance: 5.8 ohm - Mechanical factor: 4.6 - Electrical factor: 0.39 - Total factor: 0.37 - BL Factor: 19.2 T · m - Effective Moving Mass: 90 g - Equivalent Cas air load: 134 liters - Effective piston area: 0.086 m2 - Max. linear excursion (mathematical): 6.0 mm - Voice-coil inductance @ 1kHz: 0.9 mH - Half-space efficiency: 3.70% Mounting information: - Overall Diameter: 388 / 15.3 mm/inch - Bolt Circle Diameter: 369-373.5 / 14.5-14.7 mm/inch - Bolt Hole Diameter: 5.5 / 0.22 mm/inch - Front Mount Baffle Cut-out: 355 / 13.98 mm/inch - Rear Mount Baffle Cut-out: 358 / 14.09 mm/inch - Depth: 152 / 5.98 mm/inch - Volume occupied by the driver: 3.0 / 0.11 liters/ft3 - Net Weight: 3.7 / 8.16 kg/lbs Shipping information: - Shipping weight: 4.7 / 10.36 kg/lbs