Refurbished Sundown Audio E v.4 15" Subwoofer

The fourth version of Sundown Audio’s acclaimed E series has been refreshed for 2020. The v.4 update is a minor refresh from the v.3 featuring a new custom-tooled, stronger stamped steel frame and a upgrade to the directional forced-air cooling spacer. Sparked Innovations is a Certified Sundown Audio Recone Specialist. All rebuilt woofers come with a 90-day warranty from Sparked Innovations that covers workmanship. Since a subwoofer should never blow if operated within the manufacturer’s specifications, the only reason it would fail is if we did something wrong in the recone process. Features Xmax = 14mm one-way by 70% BL RMS Power = 500-watts (300-watts 8”) Vented magnetic gap Vented pole piece with optimized geometry (solid pole for 8”) Black Aluminum 2.5” voice coil former for superior heat dissipation (2” coil for 8”) High Temperature 4-Layer copper voice coil wire Spring Loaded Terminals Stitched-On “Mini-XL” Tinsel Leads to prevent fatigue and failure Bolted-on Spider Pack Bolt-through motor design to ensure maximum longevity and ruggedness against mechanical failures High strength stamped steel frame Optimized for ported enclosures T/S Specs E v.4 15" D2 E v.4 15" D4 RE (Ohms) 4.030 6.130 FS (Hz) 30.535 30.539 VAS (L) 101.063 103.031 Qes 0.759 0.818 Qms 4.101 3.750 Qts 0.641 0.671 BL (NA) 15.880 19.247 Mms (Grams) 262.699 257.621 Cms (mm/N) 103.416 105.429 Sens (dB @ 1w/1m) 87.7 87.4 Enclosure Specifications E-10 v.4 E-12 v.4 E-15 v.4 Sealed Enclosure N/A N/A N/A Ported Enclosure 1.0 cu ft 1.75 cu ft 3.0 cu ft Recommended Tuning 35hz 35hz 35hz Recommended Port Area 15 sq in 26 sq in 44 sq in Displacement 0.11 cu ft 0.12 cu ft 0.14 cu ft Depth 5.625" 6.50" 7.25" Outside Diam. 10.000" 12.250" 15.125" Cutout 8.875" 11.125" 13.875" Physical Dimensions Download Download Download Enclosure Design: Download Read More