120 Watt Audio Power Amplifer Circcuit with IC TDA7294

audio amplifer 120watt circuit

Here is a simple and easy to build general purpose 120 W. Amplifer with IC number TDA7293 for process sound system.
This amplifer was have the input for a radio, TV, stereo or other line level device.
It also has a phono input for a record player, guitar, microphone or other un-amplified source.
With the addition of a low pass filter at the input, it makes a great amp for a small subwoofer.

Parts

R :  660 Ohm 1/4 W Resistor = 2 pcs.
R : 22K 1/4 W Resistor  = 5 pcs.
R : 10K 1/4 W Resistor = 1 pcs.
R : 30K 1/4 W Resistor = 1 pcs.
C : 2200uF 35V Electrolytic Capacitor = 2 pcs.
C : 0.22uF Capacitor   = 2 pcs.
C : 22uF Capacitor =  4 pcs.
C : 0.45uF Capacitor = 2 pcs.
U1,2 :  TDA7294 100W DMOS AUDIO AMPLIFIER WITH MUTE/ST-BY

T1 :  50V Center Tapped 5 Amp Transformer
S1 : SPST 3 Amp Switch
S2 : DPDT Switch
F1 : 2 Amp Fuse
SPKR1 :  8 Ohm 120W Speaker
MISC : Case, Knobs, Line Cord, Binding Posts Or Phono Plugs (For Input And Output), Heatsinks For Q1 And Q2