Rescue Toaster
100+ Head-Fier
- Joined
- Sep 30, 2005
- Posts
- 132
- Likes
- 11
Hey sbelyo, nice work.
Couple questions, you have no extra resistors in the power supply yet, right? What voltage do you get on top of the 6as7's? Close to 170v? What is the voltage on the cathode of the 6as7's? (ie how much current are they passing)
Drew a little picture for you of what I meant, though I think you got it. You could even do totally separate L & R star grounds, and run separate wires from the power supply star ground to each. But... I don't think it's a big issue and you'd have to rewire everything.
The biggest upgrade after splitting the positive supplies would probably be constant current sources under the 6as7's instead of the 3K3 resistors. The more you isolate the cathode of the 6as7, the better off you'll be. A couple DN2540's, some adjustable cermet resistors, and a little heatsinking are the easiest way to start down the CCS road, though you can go totally crazy. But listen to the amp a lot with the resistors first before you try that, some people don't like it and you'll want to compare.
Glad it's working so well!
Couple questions, you have no extra resistors in the power supply yet, right? What voltage do you get on top of the 6as7's? Close to 170v? What is the voltage on the cathode of the 6as7's? (ie how much current are they passing)
Drew a little picture for you of what I meant, though I think you got it. You could even do totally separate L & R star grounds, and run separate wires from the power supply star ground to each. But... I don't think it's a big issue and you'd have to rewire everything.
The biggest upgrade after splitting the positive supplies would probably be constant current sources under the 6as7's instead of the 3K3 resistors. The more you isolate the cathode of the 6as7, the better off you'll be. A couple DN2540's, some adjustable cermet resistors, and a little heatsinking are the easiest way to start down the CCS road, though you can go totally crazy. But listen to the amp a lot with the resistors first before you try that, some people don't like it and you'll want to compare.
Glad it's working so well!