Blue Octave Home SW10D Subwoofer (Black) 10" Down firing long throw subwoofer, built-in high efficiency amplifier 450 Watts dynamic power, 225 watts RMS, 29Hz - 260Hz (+/- 1dB) frequency response, 98dB 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