Not sure if this is the right place so please let me know if not. I'm attempting to record two USB mics into garage band on a macbook pro.
I've created an aggregated device with the two mics in it and then in garageband I set one mic to one channel and the other to the second channel, the trouble I've found is the minute I start recording I can see that one mic is delayed by a fraction of a second. If once I'm done recording I drag them into alignment at the start I then find further through the track that it seems to have gone out of alignment again and the 'slow' track is again lagging behind.
Has anyone experienced this before and do you have any suggestions how to get around this? The tracks themselves are pretty standard voice tracks, no big effects or anything that I'm aware, the mics are in different USB ports and are different makes, could that make a difference?