Hi
I'm building an small Bluetooth speaker. I got an stereo Bluetooth amplifier and since I have just one speaker I'm trying to built a mixer as in the picture attached. I simulated the inputs with AC random signal with VDC offsets etc to see how the circuit reacts. It actually works in Orcad but not when I built it. It actually through a very faint signal to the speaker that can't be barely hear.
R+ goes into R1
R- Ground
L+ R2
L- Ground
At the speaker
Vo (purple probe) into the positive terminal. Negative terminal to ground. If I plug R+ or L+ into the speaker's positive terminal I get sound but nothing when I get Vo which is supposed to be Vo=-(V1+V2)
I have two 15V power supply so I connected +VCC positive to pin 7 negative to ground and -VCC negative to pin 4 positive to ground.
Any help will be very welcome. Thank you in advance for your support.
I'm building an small Bluetooth speaker. I got an stereo Bluetooth amplifier and since I have just one speaker I'm trying to built a mixer as in the picture attached. I simulated the inputs with AC random signal with VDC offsets etc to see how the circuit reacts. It actually works in Orcad but not when I built it. It actually through a very faint signal to the speaker that can't be barely hear.
R+ goes into R1
R- Ground
L+ R2
L- Ground
At the speaker
Vo (purple probe) into the positive terminal. Negative terminal to ground. If I plug R+ or L+ into the speaker's positive terminal I get sound but nothing when I get Vo which is supposed to be Vo=-(V1+V2)
I have two 15V power supply so I connected +VCC positive to pin 7 negative to ground and -VCC negative to pin 4 positive to ground.
Any help will be very welcome. Thank you in advance for your support.
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