Blue Octave Home SW6D Subwoofer (Black) 6.5" Down firing long throw subwoofer, built-in high efficiency amplifier 280 Watts dynamic power, 140 watts RMS, 30Hz - 260Hz (+/- 1dB) frequency response, 97dB sensitivity High rigidity PVA treated cone with butyl rubber surround, high density MDF cabinet design RCA line level inputs, stereo speaker wire high level inputs Applications include surround sound and home theater