The Redmere cable works. I have had some issues with calibrating the spl level.
Im not sure exactly, but i think it has to do with the floor noise. The first night i used the mic i had a floor noise of ~50, and calibrating the spl meter in Rew was not a problem (using the simplified REW instructions). Later that night my floor noise was 99 and i gave up for the night.
Next day floor noise was still 99 so i reset REW preferences and started from the beginning. Now the noise floor is stuck at 30 and i havent been able to get it higher.
Because the noise floor is low, calibrating to 80db on the spl meter in REW is impossible. My system gets far to loud before the SPL meter hits 80db.
No adjustment of the mic input level has solved the problem.
This sounds like a sensitivity issue with mic... Does it not?
For now Im using -10 AVR setting and a 25 mic level setting to keep things consistent. But.... That will only remain consistent until I change speaker levels via AVR, or sub levels via gain knob.
It d be nice to be able to use the mic as an SPL meter too.
If anyone has any suggestions Im listening.
Also if anyone wants any info on the UMIK I can help where possible.