IMF Super Compact II speakers 
Stunning performance from a great designer. 
 
Type: 3 way, 3 driver loudspeaker system
Frequency Response: 23Hz to 20kHz
Recommended Amplifier: 30 to 70W
Crossover Frequency: 375, 2700, 12000Hz
Impedance: 6Ω (Nominal) 
Sensitivity: 97dB
Bass: 1 x  bextrene cone
Midrange: 1 x 100mm cone
Tweeter: 1 x Audax dome
Enclosure: Bass reflex
Weight: 20kg (pair) 
Year: 1979