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In the Forum: Melquiades Amplifier
In the Thread: Gas voltage reference 0A2 tubes.
Post Subject: The gas tube adapaters? 7-pin to small octal?Posted by Romy the Cat on: 9/3/2009
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 Romy the Cat wrote:
3) There is an army of the 150V 7-pins gas tubes: 0A2, SG1P, STV150/30, StR150/30, 150C1, G150m 150C2, 150C4, CV10664, CV1832, CV2903, CV8161, HD51, M8223, QS1207, GD150/4K, QS1210, SR56. I did not try the larger octal 150V tubes (I very much would like to and I will)
Did anyone ever see the ready to do tube sockets adapaters that would let to pit the large gas tubes ingot the small sockets? Melquiades use 7-pin small 0A2 tubes but I would like to try the 0D3. They are the same 150V tubes but I got some VERY old 0D3 and I do not mind to try them on negative supply.  The negative supply is bias line on driver tube and it is VERY critical as it sits right in grid. I would like to see what it would do with sound. The different 0A2 do affect sound as I described above, what not to try the larger or older gas tube?

The Cat

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