Memphis Audio MB824 8Subwoofer 2 Ohm 4 Ohm 300W RMS Car Audio M Series 2 Pack

Memphis Audio MB824 82 Ohm and 4 Ohm Subwoofers - 2 Pack Memphis Audio's MB824 is a revolutionary new subwoofer that can truely switch between 2 ohm and 4 ohm. Switching between 2 and 4-ohm impedance is extremely easy because of the provided color-coded bridges and the wiring diagram printed above the terminals, and having the added flexibility means these subwoofers will be a part of your setup for years to come. These 8subwoofers feature a 1.54-layer aluminum voice coil, woven tinsel leads, folded surround, and pump out 300 watts RMS. See below for more features and specifications. Features: ? Selectable Impedance Design: 2 Ohm or 4 Ohm ? Reinforced Double Stitched Rubber Surround ? Polypropylene Dust Cap ? 1.54-Layer Aluminum Multi-Coil Voice Coil ? DVVC Dual Layer Vented Voice Coil ? Folded Surround for Max Excursion with Max Surface Area ? Ultra-Light Aluminum Voice Coil Increased Sensitivity and Output ? Woven Tinsel Leads Specifications: ? Impedance: 2 Ohm or 4 Ohm ? Voice Coil Diameter: 1.5? RMS Power: 300 Watts ? Max Power: 600 Watts ? Magnet Weight: 33 Ounces ? Magnet Diameter: 4.72? Mounting Depth: 3.74? Cutout Diameter: 7.13? Frame Outside Diameter: 8.31? Resonant Frequency (fs): 48 HZ ? Mechanical Q (2 Ohm/4 Ohm): 4.94/5.41 ? Electrical Q?(2 Ohm/4 Ohm): 0.79/0.7 ? Total Q?(2 Ohm/4 Ohm): 0.68/0.62 ? Sensitivity?(2 Ohm/4 Ohm): 83.5dB/84.1dB ? Xmax Linear: 0.27? Xmax Mechanical: 0.75? Displacement: 0.04 Cf. ? Air Volume of Suspension?(2 Ohm/4 Ohm): 0.366/0.353 ? Moving MAss: 76.43g ? Suspension Compliance?(2 Ohm/4 Ohm): 0.144/0.138 ? Effective Piston Area: 227 SqCM ? Motor Strength?(2 Ohm/4 Ohm): 7.65/11.66 Enclosure Recommendations: ? Single Sub Sealed: 0.5 Cf.? ? Dual Subs Sealed: 1 Cf. ? Single Sub Vented: 1 Cf. ? Port Dimensions: 3x 3x 16.5L ? Tuning Frequency: 40 Hz ? Dual Sub Vented: 1.5 Cf. ? Port Dimensions: 3.5x 3.5x 13L ? Tuning Frequency: 40 Hz This listing is for two (2) Memphis MB824 subwoofers.