Only L&R speakers used. Recordings from 50's, 60's were often exceptional and the damped theater room allows Sound Lab to present every detail in a deep soundstage.
AudioPowerLabs 50TNT mono blocks for amplification (50w, class A)
This room is 6m x 9m (18'x28')
Distance between speakers and listening position is basically equilateral triangle about 3m between speakers and about 3m to the mike positioned at center listening position.