In Reply to: Re: I already modified my RIAA posted by Thorsten on February 20, 2002 at 09:10:53:
You're right. They do have some grid leak biasing going on. I have a small trimmer resistor built in there now for adjusting the bias voltage. Not the finest sounding cathode resistor, but it works well to get a stable bias. I adjusted it for 140V on the plate and it stays put after warm-up.Kurt
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Follow Ups
- Re: I already modified my RIAA - Kurt Strain 10:35:12 02/20/02 (5)
- Should I copy... - Pär 00:55:40 02/21/02 (2)
- Re: Should I copy... - Kurt Strain 08:20:50 02/21/02 (1)
- Re: Should I copy... - Pär 23:46:24 02/21/02 (0)
- Re: I already modified my RIAA - Thorsten 11:22:35 02/20/02 (0)
- Re: I already modified my RIAA - Eli Duttman 10:49:54 02/20/02 (0)