Midrange compensation or BBC dip in audyssey arround 2000hz on or off
The dip is from what i read to let the speaker sound more neutral to the ears.
When you see the dip in the speaker response without room correction, turn midrange compensation on.
When you dont see the dip without room correction maybe you can turn it off, the speaker is designs without it.
Al my 7 1961 speakers has the dip arround 2000hz, its more strange because the tweeter crossover is set at 1500hz in the speakers, i expect the dip without roomcorrection there.
It looks its a design choice and therefore i think its better for the sound to let midrange compensation on with 1961 speakers.
I looks flat response sound not always best, but there is somewhat misunderstanding on the internet for that dip.
Audyssey and Arendal are good products, its cool to see both use the dip to sound more neutral.