various T-amp "ok to just use what i got?" mod questions

[Jonkan]

various T-amp "ok to just use what i got?" mod questions

I have recently stealth modded my t-amp (which i got for free from a friend! yay!) with some stuff i had lying at home.

I had to use a 150k alps pot for the volume since that was all i had at home.

Is that ok or does the added resistance make the input impedance too high?

It sounds good to my ears, but i have no other reference.

I also didnt have any good replacement caps for c10, so i just took a 1000uf 16v cap from an old computer psu i had lying around. It seems from my research it is not a low esr cap.

Would it be better if i replaced this cheap cap with two 220uf panasonic FC caps in parallel that i happen to have? Perhaps also bypass it with a small polystyrene cap (is 10n enough)?

Or would even just one 220uf would be enough, since i also have two 4700uf elna rjh caps for psu filtering mounted offboard (mounted directly on the dc jack)...?

I would hate having to buy just one cap if i can avoid it.

For the input caps i used some plastic film caps i had lying around, not shure what material they are though. They are marked 335k.
That would make the 3.3uf 10%, right?

Does orientation matter at all in this application? Even though film caps have no apparent polarity, i thought i read somewhere that i could matter sometimes.

Lots of questions, i know!

Thanks!
/Jonas

 

[Jonkan]

ok, i got tired of waiting for an answer so i went ahead and tried exchanging the crappy 1000uf cap for an 220uf Panasonic FC cap. I also soldered a 680uf Panasonic FC cap directly to where the 12v goes into the pcb (the power is also directly jumpered from this point to the 220uf cap). Then i bypassed the 220uf cap with a 100n film cap.


Big improvement vs the old cap!

Im shure you can do it a better way, but this sounds great!

/Jonas