Soundstream Rubicon RUB.124 12″ Subwoofer 500 Watt

12″ Dual 4 Ohm Rubicon Series Subwoofer Power Handling: RMS: 500 watts Injection molded polypropylene cone Overcast stitched cone assembly NBR rubber surround 2″ OFC 4-layer stitched voice coil Vented aluminum former T-yoke and top plate venting Top-mount depth: 6.625″ Sensitivity: 85.67 dB SPECIFICATIONSRUB.124 RMS Power (watts) 500 Efficiency (1w/1m) 85.67 Voice Coil Configuration 2″ DVC 4Ω Mounting Depth 6.625″ Optimum Sealed ft3 1.25 Optimum Ported ft3 2 SoundstreamRUB-124 Imp. (Ohm) D4 Re 4.0477 Fs (Hz) 24.13 Qes 0.8962 Qms 3.1217 Qts 0.6963 Le (mH) 1.1121 Diam 12 Vas (L) 157.25 BL 11.9677 Mms (g) 209.0668 Sen (db) 85.67 RMS 500 Mounting D 6 5/8″ CutOut Diam 11.5 Sealed Opt 1.75 ^2ft Ported Opt 2.0 ^2ft Port WxL 5″x8.5″ F3 (Hz) 49