DS18 ZR8.4D 8" Car Subwoofer with 900 Watts 4-Ohm DVC

SPECIFICATIONS Nominal Diameter 8” Nominal Impedance 4+4 OHMS RMS Power Handling 450W MAX Power Handling 900W Sensitivity (1w/1m) 82 dB Frequency Response 33Hz - 200 Hz Recommended Lo Pass Crossover 120 Hz MOTOR Voice Coil Diameter 2” / 50.8mm VC Former Material Aluminum Winding Material Copper Cone Material Non Pressed Paper Dust Cap Material PPI Surround Material Foam Basket Material Steel Basket Color/Finish Matte Black Magnet Material Ferrite Magnet Weight 55 oz Displacement Volume 0.03 ft3 THIELE & SMALL PARAMETERS Equivalent Volume 5.33 L Excursion (one way) 18mm Free Air Resonance 45Hz Mechanical Factor 4.7 Electrical Factor 0.745 Total Factor 0.643 Moving Mass 97g Compliance 97.58µ m/N BL Factor 9.48 Voice Coil Inductance 551.18m mH Cone Area 196 Cm2 DC Resistance 3.4 + 3.4 ohm Efficiency Bandwidth Product 60.4 MEASUREMENTS Overall Diameter 8.42” / 214mm Overall Depth 5.3” / 134mm Front