Bob Latino wrote:Downhome Upstate wrote:My scratch built ST-70 has all new parts (including the VTA noval driver board) except for the original cloth lead output iron. When I drive it hard, the signal begins to break up, producing static, cracks and pops. That doesn't seem like garden-variety clipping behavior. Any idea what this might be?
Thanks in advance for any suggestions and ideas.
You said here in your first post (above) that this was a scratch built ST-70 that used a VTA noval driver board. Could you post a photo of the inside wiring and let us look at how the amp is wired ? One of us may be able to pick up on some issue in the wiring of your scratch built ST-70 that could cause the problems you are having with the amp.
Thanks, Bob. Absolutely. I'll do that when I get home tonight.