“When mixing for television I check all the reverb returns individually for phase. Some reverbs can go as far as 180 degrees out of phase. When a mix is then heard in mono through a television or through some stations’ stereo simulators, instruments can sound almost totally dry because of phase cancellation. Minor alterations of some basic reverb parameters such as delay time, decay or room size can change the phase and bring it closer to 90 degrees or less, which is the safest window for phase in television mixes. (Note: if you do not have a phase meter, always check in mono to see if the effect vanishes.”
Rob Rettberg – producer/composer (CTV, Global, CBS).