Issue when using an analog delay

[Steven Latch]

Hi,

I am having an issue when analog delays are inserted post preamp in one of the loops of my GCX.

I have a G-major as the last element before the power amp and the delays work fine but I also wanted the warmth of an analog delay.

I have the following issue with the three units I have tried (memory man, malekko 616 and carbon copy). As soon as the delay is engaged, I am getting, on top of the delayed sound, a low frequency oscillating sound. It is the most obvious when playing high pitched single notes. I don't think it is a signal level issue as I have experimented with a lower input signal at both the preamp and pedal level.

Is it a well know side effect of analog delays or could there be something wrong with my setup?

Thanks!

[JohnClark]

How are you powering the analog delays?

[Steven Latch]

Hi John,

Nice to see you here again, you have always been most helpful with past issues!

I have tried a variety of methods:

Batteries
Wallwart (for the memory man)
Voodoo lab power pedal

It made no difference. Once again, what is really odd is that the G-Major delays do not have this issue at all.

[JohnClark]

If you patch the analog delay directly into the effects loop, do you get the same problem?