Syzygy Acoustics SLF 850 Wireless Subwoofer， Moonstone Black<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Full App control (iOS and Android)</li><li>Digital Room Correction - full automatic room equalization for limitless placement possibilities</li><li>Sound sculpt Technology - allows automatic or manual equalization via Syzygy smartphone App</li><li>Front firing or down firing for flexible installation capabilities</li><li>Includes WRM TX1 Wireless transmitter; can operate up to 8 Syzygy wireless subwoofers</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41c-sA%2Bw%2BZL.jpg" noproxy>