Identical results

[Gordon Palmer]

I've installed a new AVR and ran the usual sweeps with different curves no problem
Today I thought I'd double check the AVRs distance settings.

I've done hundreds of sweeps before but this time

All the results are the same for every speaker except the LFE.
Timing is exactly the same
FR is the same.
Volume varies.

Acoustic timing reference L channel
UMIK -1 Cal file loaded.

Running REW on MacBook connected to AVR via Thunderbolt/HDMI..as I've done for last couple of years.

I don't think its the AVR as I changed the distance and it was reflected in REW results

I'm sure I'm making a simple error but for the life of me I can't see it.

 

[Gordon Palmer]

Sorted.
It's an Arcam AVR20.
Turning Dirac off gave the identical readings (although I can't imagine how)
Select a Dirac filter and REW works fine.