Bogen WBS8T725 4 W RMS Speaker - Black. WALL BAFFLE SPK/XFMR ASSY AV-ACC. 50 Hz to 12 kHz SNR - Wall Mountable 4-watt capacity 6 power taps available (4, 2, 1 , 1 /2, 1 /4, 1 /8 watts) Works with both 70V and 25V amplifier outputs 8" cone speaker for excellent audio quality Easy wall-mount installation