2 rubber surround 3.5" woofers2 fabric surround 3.5" mid-woofers2 cloth coated 0.75" dome tweeters40 / 80 Watt (RMS/Music Power)Frequency range 130 Hz ÷ 20 kHz118 dB (80 W/1 m) max. SPLIncl. 100V transformer multitapPower rotary switchDirect connection to Low-Z speaker linesEasy to installSimple power settings