In Reply to: Gary Kaufman more 407A questions... posted by kappajoe on March 22, 2003 at 14:49:53:
I used a 100K potentiometer in front of the input cap. The inexpensive RS part works nicely, I have a link to the part# higher up on the same web page.408A's are essentially a 6AK5 like the WE403B with a 20v filament. I've never found an audio use for them personally, and even the 403B's are pretty common and inexpensive.
Western Electric made some of the most specialized tubes in the biz, lots of really wierd stuff!
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- Re: Gary Kaufman more 407A questions... - Gary Kaufman 03/23/0307:15:31 03/23/03 (0)