Polk Audio Monitor Series 10, 1977-1982, mde in USA

Specifications: hifiengine
Type: 3 way, 4 driver loudspeaker system
Frequency Response: 25Hz to 26kHz
Recommended Amplifier: 20 to 250W
Impedance: 6Ω
Sensitivity: 89dB
Bass: 1 x 10" fluid coupled
Midrange: 2 x 6.5" cone
Tweeter: 1 x 1" dome
Dimensions: 28 x 16 x 11.5 inches
Weight: 48lbs

Downloads:
instruction/owners manual