CU-6.5 | 6.5" 350 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" 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-6.5 Dual 2 or 4 Ohm Voice Coil Configuration Peak Power : 700 Watts RMS Power : 350 Watts Competition Grade Pressed Paper Cone Stitched High Roll Foam Surround 180oz Stacked Magnet 2 layer PC spider 2" Copper Voice Coil 8 Gauge Push Terminals   Sensitivity : 82 dB Fs : 49.5 Hz Re : 2.0 or 4.0 Ohms Qms : 3 Qes :  0.36 Qts :  0.32 Nref :  0.1% Bl :  17.5 Vas :  3.1 L Mms :  90.7 gr Xmax :  12mm (One-Way) Enclosure Recommendations: Sealed: 0.15 ft³  Ported: 0.2 - 0.4 ft³ Tuned 36hz-45hz Mounting Depth: 5 1/8 Cuto