Kevlar

Velodyne's THX Ultra2 Certified D-15 powered subwoofer has a built-in 'Class D' amplifier that provides a staggering 1,250 watts RMS and 3,000 watts peak power. The 15 forward firing Kevlar- reinforced resin driver has a 12.7 piston diameter, 3 push-pull tandem voice coil, and 24 lb. magnet structure. The DD-15 includes Velodyne's revolutionary Digital Drive room management software that works with the included microphone to optimize performance for any room position. Inputs include RCA and XLR LFE, line-level RCA, and speaker level binding posts. A full-featured wireless remote comes standard. Digital Drive DSP-based subwoofers are the finest subwoofers ever made by Velodyne. And that's saying a lot. They embody all of Velodyne's industry-leading knowledge and experience in low frequency... Less

The state-of-the-art BIC America VK-12 subwoofer offers a rugged 12-inch premium grade Kevlar woofer (Kevlar is the material bullet proof vests are made from) to deliver unsurpassed, ultra-low bass performance. Kevlar cones offer strength and dispersion advantages compared to traditional woofers. Kevlar also enables superior acoustic quality, improved mid-bass, and is less susceptible to blowout- even when being driven at the highest levels. The VK-12 incorporates a heavy-duty 1000-watt peak BASH amp, large magnet, and high power voice-coil to deliver dramatic low-frequency effects down to 24 Hz (+/- 3dB).