I have been messing around with cab pacs more recently. I used to always run through my mesa cab. I usually use 2 cabs. Not in stereo, just 2 cab blocks. Today something weird happened. One cab was from cab pack 13 which I usually use but I decided as my second cab to load an ownhammer. Both sounded fine on their own but when I turned them both on it sounded really strange like a phaser was on. Do some cabs have reversed phasing?