Boston Acoustics A60 Series II speakers - electronics - by owner -...
Frequency Response: 52 - 20,000 Hz +/- 3dB Impedance: 8 ohms Recommended Power: 10 to 75 watts per channel Sensitivity: 1 watt (2.83V) produces 90 dB @ 1 meter Dimensions: 11 1/4 wide x 18 1/4 high...