500W RMS Dual 2-Ohm EV.3 Series Subwoofer

Overview

Introducing the E-15 V.3 D2 - Sundown Audio 15” 500W RMS Dual 2-Ohm EV.3 Series Subwoofer. This subwoofer features RMS power of 500-watts, Xmax of 14mm one-way by 70% BL, vented magnetic gap, vented pole piece with optimized geometry, black aluminum 2.5” voice coil former for superior heat dissipation, high-temperature 4-layer copper voice coil wire, spring loaded terminals, and stitched-on “mini-XL” tinsel leads to prevent fatigue and failure. Specifications include DC resistance (Re) of 4.0 Ω, resonance frequency (Fs) of 32.2 Hz, equivalent volume (Vas) of 75.1 L, electrical Q factor (Qes) of 0.53, mechanical Q factor (Qms) of 4.79, total Q factor (Qts) of 0.48, force factor (BL) of 21.8 NA, moving mass (incl. air load) (Mms) of 312.9 g, suspension compliance (Cms) of 0.08 mm/N, and sensitivity of 88.6 dB 1w / 1m. Box recommendations include sealed of 2.5 ft^3, ported of 3.25 ft^3, displacement of 0.14 ft^3, depth of 7 1/4, outside diameter of 15 1/8, cut-out of 13 7/8, recommended tuning of 32hz, and recommended port area of 52 in^2.