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| Black Diamond DIA-8D4 8" 400 Watt 4 Ohm DVC Subwoofer $59.99In StockFeaturesNominal Diameter: 8" RMS Power Handling: 200W MAX Power Handling: 400W Nominal Impedance: 4 Ohm Sensitivity: (1w/1m): 85.6 dB Frequency Response: 50Hz-4.5KHz Voice Coil Diameter: 2? / 50.8 mm Voice Coil Former Material: Aluminum Winding Material: CCAW Cone Material: Non-Pressed Paper Dust Cap Material: Paper Surround Material: Foam Basket Material: Steel Magnet Material: Ferrite Magnet Weight: 38 oz Displacement Volume: .81L Equivalent Volume: 7.166L Excursion: 13.5mm Free Air Resonance: 50Hz Mechanical Factor: 6.435 Electrical Factor: 0.756 Total Factor: 0.713 Moving Mass: 108.325g Compliance: 0.039mm/N Force Factor: 9.214 Voice Coil Inductance: 0.614mH Diaphragm Area: 201.23cm2 DC Resistance: 3.4 + 3.4 ohms Efficiency Bandwidth Product: 66.13 |