Resistance Check oddities
- Thread starter snm
- Start date
There should be a bare wire between the upper and lower lugs on the volume pot where the black wires connect.
Does the amp otherwise sound good and work in what would be considered a normal way under these conditions? Can you post some photos of the 12AU7 you have as well?
Here's some photos:
https://drive.google.com/file/d/1WavPdI3cm4lhIitNHnJvoSA0dp9ozpGN/view?usp=share_link
https://drive.google.com/file/d/1ttI2jqRog3ECBBqV5n1_lzI9kbhbcln0/view?usp=share_link
https://drive.google.com/file/d/1PjVoFfVaEBoRWcgbwQAZPz7ra2_nMxBc/view?usp=share_link
https://drive.google.com/file/d/1HTEElxpBPS05NpP2oTBvS3E-fhj1uH-4/view?usp=share_link
The amp sounds fine to me, atleast I haven't noticed anything abnormal, though this is my first tube amp.
https://drive.google.com/file/d/1WavPdI3cm4lhIitNHnJvoSA0dp9ozpGN/view?usp=share_link
https://drive.google.com/file/d/1ttI2jqRog3ECBBqV5n1_lzI9kbhbcln0/view?usp=share_link
https://drive.google.com/file/d/1PjVoFfVaEBoRWcgbwQAZPz7ra2_nMxBc/view?usp=share_link
https://drive.google.com/file/d/1HTEElxpBPS05NpP2oTBvS3E-fhj1uH-4/view?usp=share_link
The amp sounds fine to me, atleast I haven't noticed anything abnormal, though this is my first tube amp.
I would pop the PC board back in and give the amp a listen. It may just be that your 12AU7 is unusually potent.
Yes, the amp will work with just the small PC board installed provided the 3K/10W resistors are still present.
I've been running the stock Crack for a few days now, without the small board just to see if any issues arise. Only thing I have a question about is the TRS connector. After listening for about ~30 minutes today, I unplugged my headphones and noticed the TRS connector was slightly warm. I assume this is normal?
Sure, the whole chassis will be warm after playing for a while. The Brits call vacuum tubes thermionic valves. Emphasis on the 'therm' syllable here. Tubes only work if their heaters are hot, and of course that heat energy transfers into the rest of the amp. The power transformer also gets quite warm.
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