Sundown Audio U-6.5SW-D4 6.5" 400W RMS Dual 4-Ohm Voice Coil DVC Car Subwoofer

BRAND NEWSUNDOWN AUDIO U-6.5SW" D46.5-Inch 400 Watts RMS Dual 4-Ohm Voice Coil DVC Car Audio SubwooferKey Features: RMS Power: 400 Watts Black Aluminum 1.753” voice coil former for superior heat dissipation High-Temperature Round-Wire Copper voice coil Double stitched surround Heavy-duty cast basket Spring-loaded terminals accept up to 8-gauge Stitched-on heavy-duty tinsel leads Solid pole with vent channels and aluminum shorting ring cap Rear drilled gap-venting Magnet ID shorting ring Top-Plate Cooling Channels Optimized for small ported enclosures T/S Specs: RE (Ohms): 6.6274 FS (Hz): 38.6925 VAS (L): 3.7701 Qes: 0.5005 Qms: 7.2470 Qts: 0.4681 Le (mH): 5.5892 BL (NA): 20.0082 Mms (Grams): 124.3518 Cms (uM/N): 136.0613 Sens (dB @ 1w/1m): 78.1460 Enclosure Specs: Ported Enclosure  - Size: .25-.35 cuft net  - Port Area: 4-5 sqin  - Port Tuning: 35hz -40hz Sealed Enclosure  - Size: 0.125-0.2 cuft net  - Displacement: .04 cu. ft.  Depth: 5.71" Outside Diameter: 7.17" Cutout: 5.94"