I recently bought some drum mics and I've been having a few problems. Here is my set up:
Shure PGDMK Drum mics plugged into a Tascam MA-8
preamp, which is then plugged into an Edirol FA-101
USB Interface, plugged into my Mac. I use Digital Performer.
The problem is that, sometimes, there will be some sort of strange noise of top of the drums, very prominently. It is difficult to describe, something like a phasing echo. I don't believe it's a latency problem because even when I play very softly so that just the one mic picks up, the sound is still there and very loud. It usually takes a while for this sound to built up during recording and it is still there on the final version.
Could somebody please give me any advice?