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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: Dht driver tube for 45 posted by Joe on January 24, 2001 at 05:58:20:
Jeff Day and Gordon Rankin worked together on a custom 45 SET for Jeff. They tried some AVVT driver tube for the 45. It was a nice sound, but both eventually preferred a WE437 driving it. The DHT's are nice, but not as detailed as some of the best IDHTs you can use. I found the 6H30-pi to be a tough act to follow for my 45 SET. Some love the 6H45-pi, which has a mu of 52 compared to 15 for the 6H30, but that can be too much gain for a person with a preamp with gain already IMO.My opinion on similar tubes in cascade - they tend to cancel each other's harmonics such that the sound gets a little dried up if you run the inverted output of the first into the second. To avoid that problem you can use an IIT, inverted interstage transformer, or like Phil Sieg did, the driver is SE and the outputs are PP. Maybe a 10 driver for a 45 would be better? I don't know. I am partial to my 6H30-pi. It's really hard to fault. Very low plate resistance, about 1K ohms which when using a CCS active load coaxes excellent low end performance and does a credible job of working it class A2, and I get about 3W before it hard clips.
I tried a lot of 6SN7's, and they are not doing what the 6H30-pi is doing. The 6H30-pi is very transparent in the circuit, more so than any 6SN7 I had.
Kurt
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Follow Ups
- Re: Dht driver tube for 45 - Kurt Strain 01/24/0108:59:50 01/24/01 (3)
- Where can you get a 6H30--pi - Joe 10:34:19 01/24/01 (2)
- Re: Where can you get a 6H30--pi - Kurt Strain 10:54:04 01/24/01 (1)
- Re: Where can you get a 6H30--pi (Thanks Kurt) - Joe 11:19:18 01/24/01 (0)
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