Blue Octave Home SDS8 Subwoofer (Black) 8" Down firing long throw subwoofer, slim design, built-in high efficiency amplifier 300 Watts dynamic power, 150 watts RMS, 30Hz - 260Hz (+/- 1dB) frequency response, 97dB sensitivity High rigidity PVA treated cone with butyl rubber surround, high density MDF slim cabinet design RCA line level inputs, stereo speaker wire high level inputs Applications include surround sound and home theater