Coloursound Jumbo Tonebender

[Baranouil]

Hi guys,

I recently built a coloursound jumber tonebender following this layout:



I have 2 issues there:
1° I need to almost turn all the way up the volume pot to have decent amount of sound. Any idea from where the problem could come from?
2° Also I have almost no gain. Do you think it could come from the fact i replaced all the 500pf caps by 680pf caps? And replaced all the transistors (BC184C) by 2N5088 transistors?

Thanks

Here is the schematic:

[PRR]

Numbers 1° and 2° are the same complaint. It's not the parts you used.

https://aronnelson.com/diywiki/index.php?title=Debugging

[antonis]

It might be the parts you used, if those parts are of wrong value..

e.g. 82k instead of 8k2 and/or 47k instead of 470k..
Or 1k instead of 100R, or 1k5 instead of 15k or.. or..

[andy-h-h]

Hello

Point 1.  Could be a number of things causing this.  Photos and voltages if you can?  Otherwise it's a guessing game.     

Point 2.  No - changing transistors and those caps will not be responsible for low levels. 

Good luck

[Rob Strand]

Check your transistor pinouts.   If c and e are swapped you could get low gain.

If possible post voltage measurements for the transistors.

[Baranouil]

Thanks everyone!
Turns out, transistors were not the right way.
Now everything is working!