- Feb 5, 2019
Hi!The only solution I could find was to work around the issue using EQ allpass filters to restore proper phase - so that, after EQ, the summed response is consistent with the response of left and right channels. That works, but obviously a lot of finesse is required in designing the EQ filters. Someone who only has access to "basic" PEQ or doesn't know how to manipulate phase using allpass filters would have no chance of getting this right. They would have to make a carnelian choice between having a correct response when individual channels are playing, or the correct response when both channels are playing. And that's assuming they even spot the problem in the first place. I really hope my case is some kind of isolated extreme scenario - if it's not, then I guess we'll have to revise standard calibration procedures!
Do you hear an improvement with the allpass filters changing the phase only?
I've never been able to hear anything but worse sound when I was manipulating phase.
My experience in small rooms (I have my pair of 8030C in a 6m2 room) is that there is a lot of bass variation (I mean from 60Hz to 100Hz) if you stay still in your chair or bend 25cm forwards or backwards. Near the center of the room, you lose a lot of bass. Near the backwall, you have too much. My REW measurements support that.