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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: The 1625 Appreciation Thread posted by Freo-1 on September 5, 2014 at 16:08:35:
"The 1625 makes a excellent audio tube in pentode operation. It is not recommended for use in ultralinear, as the screen voltage is limited to 300V. The plates can take 600V all day long."
Even the fragile screen grid can be dealt with, when UL mode is desired. Buy O/P transformers with separate screen grid windings. Yes, such "iron" is costly, but the performance obtained justifies the expense. The benefits of regulated g2 B+, when pentode mode is employed, are well known. The same benefits are obtained from a UL mode setup, when separate screen grid winding O/P transformers are employed.
Eli D.
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- RE: The 1625 Appreciation Thread - Eli Duttman 17:46:53 09/05/14 (0)
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