Cu-8 V2| 8" 750 Watt RMS Subwoofer

The Wolfram Audio Cu series are high performance, cost effective, competition grade subwoofers that stand out from the crowd in every aspect. The Cu series features a double stacked 180oz ferrite motor, 2.5" high temperature copper voice coil, and an advanced cooling design.  Cu is the chemical symbol for Copper - an inexpensive, yet precious metal. In other words, the Cu series is a fantastic option for daily bangin' without breaking the bank! Specifications: Wolfram Audio Cu-8 Dual 2 or 4 Ohm Voice Coil Configuration Peak Power : 1500 Watts RMS Power : 750 Watts Competition Grade Pressed Paper Cone Stitched Foam Surround 180oz Stacked Magnet 2 layer Nomex spider 2.5" High Temp Copper Voice Coil 8 Gauge Push Terminal Sensitivity : 81.0 dB Fs : 34.2 Hz Re :  2.0 or 4.0 Ohms Qms : 2.67 Qes :  0.36 Qts :  0.32 Nref :  0.07% Bl :  19.62 Vas :  8.84L Mms :  158 gr Xmax :  15mm (One-Way) Enclosure Recommendations: Sealed: 0.3 ft³  Ported: 0.5 - 0.75 ft³ Tuned 34hz-36hz Mounting Depth: 6.