Abstract: I have wondered WHY the DRC-measurement mics are supposed to point towards the roof??, rather than directly towards the speakers?
First lets differentiate between measuring for a 2.x setup and a multichannel setup.
I´ll use a 2.0 setup to explain.
The recommended mic for DRC-measurements is “omnidirectional”, but this is not really true. Over 12-14kHz it’s not.