Uproar assymetric clipping without gain

[teknoman2]

I just finished both uproar & egodriver.

Egodriver is working well despite the one led doesn't light.

I just measured uproar ic voltages and they are correct 9v,4.5v, and 0v on ground.

My LED's D8 & D9 light as well but D7 doesn't so I dont have any gain or distortion.

Finally my overall volume is low.

They only mod I did was that I used a SPDT on/on cause I didn't have any SPST.

I wire the SPDT like having a SPST.

Do you think that's the issue, or there is something else?

* I have checked all the traces and all the values of the components and my voltages are always in the range of 4.5V except on the diodes

Any thoughts?

[teknoman2]

I found my issue,

It seems it was a cold joint on R2,

now I am having the excepting sound gain and distorion.

I made some changes also

CP =1uf
C8=10n
C9=2n2
C10=10n

and for SDMB I use 2n2 instead of 10nf.

Also I want to ask something

D7 (blue LED) doesn't light but D8 & D9 light.

Is that normal? Any thoughts?

[oldhousescott]

Yes, I wouldn't expect D7 to light. You might consider changing D7 to a 1N4148 or 1N914, or even a 1N4001, to make the difference in clipping more noticeable in that switch position.

[teknoman2]

Thanx mate I will check those diodes.