Maximum gain.

Thread Starter

BjorkElec

Joined Nov 28, 2024
37
The speaker is really inaudible. Only some noise comes out when I use a 10K pot.
And even then, it's not actual words or anything. Just a bunch of noise.
 

MrChips

Joined Oct 2, 2009
34,889
If you don't want to use LM386, you can get extra current output with a Class-B push-pull output stage.
This is just a sample drawing. Substitute one stage of TL072 for LM741. Use your +9V and -9V supplies instead of ±15V.

1734275630819.png
 

sghioto

Joined Dec 31, 2017
8,634
It's still horrible here!
Any help would be really appreciated.
This should work better with what you have but the TL072 is not designed to power a speaker as all others have mentioned.
1734287788283.png
EDIT: Add filter caps on the supply lines. Limit gain from 2 to 12 max.
 
Last edited:
Top