Tube power amplifier 3W with 6BX7

Tube power amplifier 3W with 6BX7 circuit

POWER OUT 3W/8 ohm - 1KHZ
INPUT SENSIV. 600mV for 2W
DISTROTION

3%

FREQUENCY RESPONSE

22HZ-50KHZ   -3dB

S/N

90dB

Part List

R1= 22Kohm C1-7-9= 100nF 1KV V1= ECC81
R2-3= 1Kohm C2= 220uF 350V V2= 6BX7
R4-5= 1.5Kohm C3= 150nF 400V T1= 220V@2X250V/6.3V/6.3V
R6-7= 470Kohm C4= 100uF 25V T2=Audio transformer
R8-9= 1Kohm 2W C6-8= 2X100F 350V
RV1= 250Kohm Log. pot. D1-2= 1N4007

 

Sam Electronic Circuits 10/01