Specifications:

Frequency response: 50Hz to 18Khz
High frequentie driver: 25mm polyester dome unit
Mid driver: 100mm
Woofer: extra long throw with aluminium voice coil.
Size HxWxD: 71cmx 27cmx 33cm
Weight: 22kg
Stand height: 188mm
Sensetivity: 85db at 1 meter
Power: 25W to 200W
year: 1979