Greetings, I'll try to be more specific, and try to troubleshoot as much as I can by myself.
First, I'm not happy with the center tapped transformer circuit I tried, its too simple (just a transformer and 4 diodes) and seems like a cheap way to go.
The other circuit from the amp that I tapped into is powering two 4558D Op Amps, but suddenly I'm only getting 4V on the pos side, and 9v on the neg, I thought I had 9v on both sides, or my tester was drunk, dunno.
A link to a recommended and tested +_ circuit would be appreciated. I'm using TL082ACP's and NE5532P Op Amps.
Thanks fellows, been too busy and havent had time to upload a decent schematic, at the moment I'll try to get a good power supply wired up