D1000 Pro signal grounding

[audio_engr]

@audio_engr did you do this to solve a problem, or because it seemed like a good idea? Your REL subwoofers have a 3 pin power cable, and phono inputs. There is a difference between “signal ground” and “safety ground”, the power plug provides one, the phono cable the other.

I do not use the RCA plug (Low-Level) connection system when I hookup the RELs to the Devialet. The 3-wire High-Level connection system has a Red wire for signal Rch thats to go to the positive terminal of R-ch speaker outputs, the Yellow wire to the positive terminal of L-ch speaker outputs, and the Black wire to the negative terminal of either R-ch OR L-ch of speaker outputs [if the Amplifier is Class A/AB]. If not, as is the case of Devialets, then to a suitable GND post. I used this GND post for grounding the input signal. Also, in my case as I use monoblock amps & a pair of RELs, each REL behaves as a mono Sub, hence Red & Yellow wires are combined. 

The RELs have their own grounding via the power plug but when then take the High-Level input signal off the main amplifier, that connection also requires a ground wherein the Devialet's GND post is used.