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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: Hitachi posted by Dave Pogue on March 13, 2007 at 05:48:27:
I'm using them for the front end of the Machine from now on, I have 140 Mullards and 200 Hitachi. IME, you have to get a few since, not being a dedicated audio device, they test a little scattery (not nearly as bad as the 5965, though). I built myself a pretty comprehensive test breadboard, I can test for rp, gm, and in-circuit gain. The Hitachis do test a little stronger and tighter than the Mullards; I have them in the amp breadboard now, and am trying different output transformers, coupling caps, O P points for the 6GKs (I'm using the IXYS chip CC in the tail, so I can dial the current in the front end with the twist of a screwdriver).Tell you what; I have a perfect quad of Mullards sitting right by the amp, I'll put them in there today and report back from this end.
Interesting,
Poinz
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Follow Ups
- Wow, no kidding? - Poindexter 09:54:06 03/13/07 (5)
- Re: Wow, no kidding? - davehanc 05:00:58 03/15/07 (1)
- Report. - Poindexter 09:49:11 03/15/07 (0)
- Re: Wow, no kidding? - Dave Pogue 10:10:48 03/13/07 (2)
- Yah. - Poindexter 10:53:29 03/13/07 (1)
- Quick update. - Poindexter 10:59:20 03/13/07 (0)
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