Room Mode measurement question for complex-shaped room with vaulted ceiling

[RussNC]

I've read the article on REW and room modes and already have my first question on the setup. I have a complex-shaped room with ceiling heights ranging from 9'-6' to 15'-2". The ceiling is vaulted over roughly 35' over multiple rooms, so I am focusing on an area that is within 15' in every direction from the seating area to take measurements. The guide suggests setting a speaker (sub) in one corner and the microphone in the opposite corner near the ceiling. I will be taking readings from multiple corners before some at the two seats, but do not have the ability to raise the mic to the full ceiling height. Is there a height lower than the ceiling that would sufficient to determine the room modes? Thanks for the help.

 

[John Mulcahy]

Sure, just put the mic in another corner on the floor if you want to see the extremes of the modal behaviour. It isn't especially relevant though,.