I'm newer to the Helix and am having the same "muffled" problem when running 2 cabs that came standard with the Helix. My path is: Matchless Amp into a Y, A1 is a cab and A2 is a separate cab, back together via mixer, then out. I've tried switching the phase on the mixer, panning the Y and the mixer hard R/L etc, but no luck (I'm using the stereo R/L 1/4 outs to test the signal). There is a significant volume decrease when running both cabs together and the sound is muffled. Am I missing something?
Thanks!
