shot
Well-known member
I'm in the process of calibrating my dual unit.
It's been slow since I don't have a lot of spare time.
What I noticed is that I have a lot of noise, both hum on 50hz and pink noise when going straight to output transformer without any series load. My output transformers are 10k:10k edcor. If I strap 100R to primary then the noise drops. I tried lower values like 22r and 47r but they don't work in my case. Also I need to figure out what is the best way to ground the unit. Usually I go for pin 1 to chassis but it seems that going unbalanced in likes better if I ground the pcb from pin 1 and remove pin1 to chassis link.
But I'm still reluctant if I should stay unbalanced or if I should get some input transformers...
And I'm thinking I should try 600:600 transformer for output... but that's a drag since I already mounted 10k edcors in chassis and wired them.
Soundwise, this compressor is rough. Sounds fantastic!
![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Luka
It's been slow since I don't have a lot of spare time.
What I noticed is that I have a lot of noise, both hum on 50hz and pink noise when going straight to output transformer without any series load. My output transformers are 10k:10k edcor. If I strap 100R to primary then the noise drops. I tried lower values like 22r and 47r but they don't work in my case. Also I need to figure out what is the best way to ground the unit. Usually I go for pin 1 to chassis but it seems that going unbalanced in likes better if I ground the pcb from pin 1 and remove pin1 to chassis link.
But I'm still reluctant if I should stay unbalanced or if I should get some input transformers...
And I'm thinking I should try 600:600 transformer for output... but that's a drag since I already mounted 10k edcors in chassis and wired them.
Soundwise, this compressor is rough. Sounds fantastic!
Luka