Hi guys, I'm hoping someone can advise me as to the feasibility or indeed the likely benefit (if any) of the proposed modification.
Basically solder a 50k resistor (same as volume pot) in its place circled in red.
(See circuit attached)
Apologies I cannot find a schematic.
This will serve two functions potentially.
I can use a passive preamp to add a few more inputs plus I can have a higher quality potentiometer in the chain.
Now there a couple of problems that I can foresee.
Firstly, as the preamp section is still in the circuit, I'm not sure if it is expecting to see full signal from the input before or after the volume pot (I'm assuming after in which case this shouldn't be a problem).
Also do I need to put a ground tapped on to the new part of the circuit as I believe there is one going to the current volume pot?
As you can tell I'm not very technically advanced in modifying my hifi but as these amps are cheap and actually sound pretty good I thought I could "have a go" so to speak.
I shall be in no way offended if someone points out that "this is a stupid idea and you should just leave the thing alone until you learn what you are doing" or similar. Its probably the best thing for me, the cold hard truth!
Or if anyone else has any ideas for improving this amp I'm all ears!
Thanks a lot.
Opti-cal