grounding on p2p gainclones...

[nerd of nerds]

first of all, let me say thank you to all of the EXTREMELY helpful members of this board, without you guys i'd be completely clueless


after fixing some more serious problems on my gainclone ,such as a loud buzzing when i turn it on, they are now working better...

but i need to completely redo my grounding circuit and i'm not sure how to do the grounding star thing on p2p...just keep everything seperate until it meets at a point and then wire the two points togeter?

if i fix the grounding problems will this rid me of than annoying hum and the radio interference? the hum isn't the same one i had, before it wouldn't even play music...

otherwise these things seem to do pretty well even for the crappy rat shack transformer...i do plan on getting 1 transformer per channel later tho...

thanks for all the help!

[Sherman]

Originally posted by nerd of nerds
...but i need to completely redo my grounding circuit and i'm not sure how to do the grounding star thing on p2p...just keep everything seperate until it meets at a point and then wire the two points togeter?
...

You can solder a wire to the common signal ground point and the other end to the common power ground point. It works fine. You can also run separate wires from signal ground and power ground to the safety (or earth) ground which should be connected to your chassis.

If you have a lot of interference the first thing to check would be the wire from your input jack to your pot (or to the input of the amp if you aren't using a pot. I use shielded wire for that run. Ground only one end of the shield.

[nerd of nerds]

well, i wired it up just like it says on nuuk's page for the 1 transformer gainclone and i still get a slight hum...and radio interference

it DOES sound sooooooooo much better than the amp i was using AND than it did when i first built it...

i am using a 3 prong power connecter like from a pc power supply...should i connect the ground to that? and i don't so much have a case for this yet...i will tomorrow because i'll be able to get into the shop at my school and bend the metal for it... could adding a case kill the raido interference? i think the hum might be just be electronic noise from the radio interference...

any ideas?