Earthquake Sound Supernova MKIV-12 Powered Subwoofer with SLAPS Technology， Black Ash<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Dual firing powered subwoofer</li><li>SLAPS technology increases dB level and saves energy</li><li>450 watts class "A/B" power amplifier</li><li>12 dB/octave variable filter from 40 Hz to 180 Hz</li><li>High level inputs and low level outputs with automatic signal detection</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41fHpCZhWaL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51GUD4XXL1L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51MSpK4mN5L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/513BEj91AgL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51XIPGhowzL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51rKzwLv5%2BL.jpg" noproxy>