Pioneer CS-05 30,000yen(one set, the February, 1970 release)

The indirectional speaker system which does not limit a listening area.

A 20cm cone type unit is adopted as low-pass, and it has the structure where the 7.7cm cone type unit has been arranged by 3 and 120 degrees of axial angles in the high region.
The sound of a high region spreads round the whole room by carrying out like this, without concentrating on a front-view axis. 

Scheme	2 ways, 4 speaker bass-reflex scheme, and a floor type
Using unit	For low-pass: 20cm cone type For high regions: 7.7cm cone type x3
Impedance	8ohms
Play frequency band	60Hz - 20000Hz
Output sound pressure level	90dB/W
The maximum input	40W
Dimensions	Diameter 362x509mm in height
Weight	12.5kg

Posted in: Pioneer