I have a pair REL Studio III connected to a pair of monoblock Spectron Class D amps. The Spectron amps are running as differential amps since they are bridged so the hook up is a little different but I don't use the black wire.
REL Subwoofers, Class D Amps and Neutrik Cables.
I have a Rel 505 and just purchased a a Peachtree grand integrated amplifier which is a class d amp. Unfortunately the Negative speaker terminals on D amps in which the neutrik cable connects to are not a ground which could cause damage to the amplifier. I contacted Sumiko (Rel) and they confirmed this. It sound the like best solution would be to use a neutrik cable that has "Caps" on the black wire or something. I've seen them selling on Audiogon A few years ago but not lately as Rel's new subs do not have the issue. Does anyone have any knowledge of this or has anyone seen seen this type of cable anywhere lately?