Amplifier of acoustic frequencies with preamplifier
TECHNICAL CHARACTERISTICS:
Tendency of catering: 15V
Force of expense: 4,2Wrms in the 4W
Minimal signal of entry: 94mVp-p with preamplifier, 0,65Vp-p without the preamplifier.
Materially:
R1 2,2KW
R2 330KW
R3 4,7KW logarithmic potentiometer
