Hello. I bought Marshall DSL40 CR from the local dealer (BON STUDIO- Greece) in 2019. Since the first time that I turned it on, I noticed that the amp makes aweird scratching soun when I'm using High Output. I 've contacted the dealer and he told me that it is normal and the amp is doing a format. I accepted this information and I was using the amp like this. I still have the scratcing sound for 10 minutes, every time that I'm using High Output.
A week ago I desided to check the tubes and the BIAS and I found 11mA at the first EL34 and 17,5mA at the second. I'm trying to adjust them and increase them at 35mA but the trimmer stops when I reach at 20mA. I'm trying to understand what is the problem. Is it normal?
Thank you in advance
Did you ever find out why your bias mV values are so low? I'm having the same issue. He highest I can go is around 30 mV. I've just created a new question in the forum about this issue.
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[URL="?"]pikashow[/URL] - aayush km 03 Sep 2022 at 06:01 AM
- casamittal casamittal 09 Sep 2022 at 10:46 AM