OTL Asylum

Posted by rogerh113 (A) on July 19, 2023 at 06:53:24

In Reply to: RE: Croft Series X info posted by bcarlos on July 18, 2023 at 10:35:02

You can do a search on Croft Troubadour, or Croft OTL, here, and between current and ended items there should be a number of different amps listed. You can take a look at the tube configuration, and if most are the same, then that is likely the original tube configuration. People swap tubes for various reasons, and with various effects.

https://www.hifishark.com/search?q=croft+troubadour

A good strategy might be to set the power configuration of the transformer to correspond to your local power. If there is still a volume problem, you might want to try the alternate ECC tube with more gain. Once you get the amp up and running, it is pretty easy to do tube substitutions to get where you want to go based on the audio result of the swap.

It may be challenging to get specific information on the Croft amp, but you will have no difficulty getting replies from the board on various tube substitution possibilities, and often all the info you need from a web search.

Sounds like you are trying to figure a precise end-game on the tubes, which I think is going to be hard without hearing what the results are.