Echo back while recording


Active Member
For the life of me, I don't know what I did, or even if I did something.
I was recording congas through my Allen & Heath ZED r16 out through my ADAT ports then on to my MOTU
LP 32 then into my computer with the LP32 connected with USB and all was fine yesterday, today I tried the same thing, but now I'm getting an echoing slapback when I hit the Congas. I recorded anyway and the slapback did not get recorded but I was still hearing the slapback while recording. I looked for the ARM button to see if that would help, but I think because I'm in Core Audio, the ARM is not functioning.
Any suggestions?
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