| ampage Tube Amps / Music Electronics |
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| Bob | 6550 I'm thinking about making a cathode bias champ type amp with a 6550. I've never dealt with 6550's before, what value should I start at for the bias resistor? (I've got big iron so I'm good to go there.) Thanks |
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| Doug Patterson |
Something in the 250 ohm to 350 ohm range should do. To be safe, start with 330 ohms. Doug |
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| bob | thanks- that's what I was thinking! |
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