Below is a small integrated DAC - power AMP with IR remote control
COMPONENTS:
A: DAC module, input is S/PDIF, can be either coaxial or optical Toslink
B: Potentiometer
C: Jack for outputting line signal before amp
D: PAM8403 2x3W class-D amp
E: speaker terminals
F: IR receiver
G: Arduino mini clone
H: Dual H-bridge, only one side used
I: Old motor potentiometer where the pot were badly damaged
J: 3D printer shaft coupler
K: Power distribution worms nest
L: A random remote control
M: Toslink input
DESCRIPTION:
A modern TV set is usually paper thin, and so is the sound quality it produces. The usual solution is to connect a soundbar or even a beefier soundsystem. The build above is a low cost alternative, mainly based on parts I had laying around anyway.
The solution is based on an optical Toslink input because thats all a modern TV offers, no analog outputs anymore. And since the S/PDIF is fixed output, a volume control was needed too. Everything is powered from 5V USB connector on the TV set, apparently it is capable of delivering enough juice.
A: DAC module, input is S/PDIF, can be either coaxial or optical Toslink
B: Potentiometer
C: Jack for outputting line signal before amp
D: PAM8403 2x3W class-D amp
E: speaker terminals
F: IR receiver
G: Arduino mini clone
H: Dual H-bridge, only one side used
I: Old motor potentiometer where the pot were badly damaged
J: 3D printer shaft coupler
K: Power distribution worms nest
L: A random remote control
M: Toslink input
DESCRIPTION:
A modern TV set is usually paper thin, and so is the sound quality it produces. The usual solution is to connect a soundbar or even a beefier soundsystem. The build above is a low cost alternative, mainly based on parts I had laying around anyway.
The solution is based on an optical Toslink input because thats all a modern TV offers, no analog outputs anymore. And since the S/PDIF is fixed output, a volume control was needed too. Everything is powered from 5V USB connector on the TV set, apparently it is capable of delivering enough juice.