5515-44 Pair 15-Inch Car Subwoofers with RD15 Sealed Enclosure and K2 Install Kit

Build a high-output car audio system around two 15-inch 5515-44 subwoofers, each rated for 400 W RMS and 800 W peak. Their dual 4-ohm voice coils, 19 Hz to 130 Hz frequency response, and 85.4 dB sensitivity suit a system designed for strong low-frequency output. Spider Plateau Venting directs cool air toward the voice coil, while a radial ribbed T-yoke helps dissipate heat. The Inverted Apex Surround increases cone surface area for air displacement, and the progressive suspension controls excursion to reduce distortion at high volume. The included RD15 sealed enclosure is sized for two 15-inch drivers and built from 3/4-inch MDF. Installation extras include 20 metal drywall/wood screws, 20 feet of 14 AWG blue speaker wire, and four spade terminals, covering the listed hardware and wiring needs for mounting both subwoofers.