Dual mono with REL Subwoofer

[marcor]

I have read that Devialets behave like classic amps with regard to Ground vs -15v issue. I once had a Rotel Class D that frightened the life out of me when I connected a Rel High Level!

On the subject of Hum, I’ve found that the 2nd hand T7i I got from Nintronics has a mild hum, but my original T7i has none.

PHASE: Having spent weeks measuring the effect of Devialet delay values on sub integration using wavelet spectrograms, I’d beware the suggestion to turn on high pass filter for the mains. It can introduce a significant phase shift that could upset a professional's installation. 
But provided you can measure and compensate for it, it CAN reduce over-thick bass in the crossover region.

Thanks for your response & recommendations. 

Anyway, so long possible, I'd go with High-Level setup of the RELs. REL G1 MK II designer John Hunter tells me its much more dynamic and much superior integration with the Main speakers than using Low-level. I am only concerned that it seems the Black (ground) wire also needs to be connected in this case with Devialets. Just hope it doesn't mess up the Amps or my main speakers ...

Well it hasn’t mess up mine for the past 2 years...