I seem to have a strainge phasing effect coming from my a+h xone 92 mixer. I notice the problem when I lower all channel faders so there is no sound coming from the mix 1 output, The sound is almost like a "phaseback loop", nothing that I do on the mixer stops it ie. play with the lfos and filters, raise and lower the channel faders, crossfader movements - If I turn off the mixer or the speakers, then it stops. Has any one else had this problem ? does the mixer go back to the shop ? I have just got new venom leads (xlr to xlr) going from mix a output on the mixer into tannoy reveal active moniters. HELP please![]()