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In Reply to: Some great observations and interesting points posted by Naz on March 21, 2007 at 16:29:33:
The lack of treble in the 26 has been referred to by a few people - it does appear a bit flat on top. For a full sound with good top, try the 12A or 01A, or the 30 which has excellent top but a rather thinner sound. There are some distinct flavours in the DHT cookbook. I'd suggest you experiment a bit more with a greater range of DHTs. I went through a load of them by using bench supplies for the filaments - I just dialled in the right voltage and swapped tubes. I've personally found some nice mixes of DHT that I find promising. The cheapest is the 3A5 which is really peanuts - not the best, but pretty good indeed. Useful double triode, which could probably mate well with another double DHT the 1J6 as a driver. Must try that.I must take a look at SET - never had one but not too hard to build and I have the parts. I hang out here to discuss DHTs!!!
Follow Ups:
Is a match made in heaven.I have 26's driving various output tubes and I'm a big fan of the tube. But it leads to something very special, perhaps unique with the 45.
I've been talking to Josh about a GM100 driving a 2A3. :)Can you say MUTANT?
Maybe a GM100 linestage....
I did try a 2a3 linestage, but it wasn't the equal of some of the other small DHTs. Others have tried 300b linestages. Haven't heard of a 211 or 845 linestage yet!!
Have you tried 10/801 or 316?These make up very good linestage amps.
There are some radio transmitter tubes, that are 6ft tall, and crank out over 1000W in SE deep class A. Those would make quite a line stage! :)))10 kilovolts on the plate, generate enough X-rays to kill anyone within 20 feet overnight.... sadly, the death of a janitor who mopped the transmitter room on top of the Emipre State Building lead to the discovery that 5+ kilovolts on the plate generate humongous amounts of X-rays..... enough to ignite A-bombs. Special tubes that had focused x-ray bombardment were developed for that puprose........ probably pretty powerful sounding for that split second before the blast. ;)
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