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Noisy loop
Posted: 07 May 2014, 10:37
by Uli Jon Blackmore
This is not a huge issue for me (it is not egregious) but I am wondering why there is more ambient noise when I switch on the loop on my YJM 100 as compared to when the loop is off. This occurs whether there is anything in the loop or not.
Thanks in advance.
Re: Noisy loop
Posted: 07 May 2014, 10:46
by Uli Jon Blackmore
I wanted to add that the slight noise remained despite changing the preamp tubes out, with new and NOS.
Re: Noisy loop
Posted: 07 May 2014, 11:41
by Alpeggio
I think they all do it unfortunately, certainly mine does. I'm just glad its not egregious to you, I will sleep more soundly now knowing this lol.
Al
Re: Noisy loop
Posted: 09 May 2014, 06:32
by John 14:6
I think it is because you are hearing some of the noise from the first and second gain stage passing along into the third preamp tube controlling the effects loop. I have found that my effects loop will not work if I have a problem with one of my gain stage preamp tubes. I need to switch out a tube in V1 under the can for example before I get sound again even though the effects loop is controlled by the V3 tube.