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Single Ended Triodes (SETs), the ultimate tube lovers dream.

RE: How reliable have your SET or SE tube amps been?

I forgot to mention that with these added series resistors, you should be mindful of their voltage ratings. If for example the transformer secondary is at 400V, then a 500V resistor rating would not be ideal. Resistors need to be at or bellow 70% of their max voltage rating for a long and happy life. Either up the rating, or use two resistors in series.

I also forgot to mention in the previous post that the series resistors will also have the effect of lowering the B+. If your line voltage is on the high end of the scale as is the case in many places, there should be no issue. If you were to use the 5V3 which drops less voltage than the 5U4, you would probably end up at the original B+ level with the use of the series resistors. Hope this helps. Let us know if you resolve the issue with whatever means you might try.


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  Michael Percy Audio  


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