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In Reply to: 6SN7 Substitute for 5670 - Request Insights posted by svisner on June 20, 2024 at 10:51:58:
I'll go against the consensus here (which I don't disagree with in a general sense) and say that it's possible a 6SN7 could work well in a circuit originally using a 5670. It all depends on the circuit configuration and component values. The thing is, there's more than one operating point that's likely to be satisfactory for a given tube type. If that wasn't true, manufacturers wouldn't provide multiple operating points in their data sheets, and every designer who wanted to use a specific tube would be hamstrung with a very specific set of parameters. The bottom line is that no one can answer your question intelligently without knowing the circuit it's used in.
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Follow Ups
- Depends on the circuit - Triode_Kingdom 15:49:32 06/22/24 (4)
- Picture of Circuit Board - svisner 16:23:54 06/22/24 (3)
- Simpler problem - Chip647 11:31:44 06/27/24 (1)
- RE: Simpler problem - svisner 06:31:32 07/26/24 (0)
- RE: Picture of Circuit Board - Triode_Kingdom 21:05:15 06/22/24 (0)