The phono stage is fine. It sounds like the subwoofer is way too sensitive. I would disconnect the sub and any crossovers and see how things run. Remember, records always produce a little rumble. If all is back to normal you have a subwoofer problem, if not than you will have to start eliminating units one at a time. Other sources do not produce a lot of very low frequency garbage like a record does and may not excite the problem.
Tube Phonostage Causing Rumble and Noises
Hello, I am desperate in need for advices and help.
I have a Aesthetix I/O Eclipse (one power supply) that I acquired new in 2009. It started to make the SVS SB16 Ultra subwoofer rumble a few months ago. I sent it back to Aesthetix, they performed a bunch of upgrades and replaced 4 tubes in gain stage one claiming these would help with the noises.
When I got it back three months later, the rumble got a bit better but it was still there. Then Aesthetix sent me a new set of tubes claiming there were specially selected and tested for low noise. However, they didn’t eliminate the rumble.
Then I played a record to during the test, the unthinkable happened. When the phonostage is idle, there was just rumble. As soon as a signal was passed from the phono, the sub went crazy, it produced some subsonic noise that made the room shake. I then connected the phono to a tube integrated amp and I heard a loud distorted noise through my LS 3/5A.
The strange thing is that I have no issues using the I/O with my Apogee Fullrange without the sub.
I would appreciate any shape or form of advice/help.
Thanks in advance and Happy New Year!
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- 41 posts total
- 41 posts total