Connecting single sub to monoblocks

Hi,

I have the BHK pre and M1200s, also a single REL sub.

Can I use the high-level input to connect the REL given there’s no common ground? (REL I think advises against it).

I’ve looked but not found this answered anywhere else, apologies if I’ve missed it.

Very Best!
William.

I had this issue when I went from a stereo amp to pair of mono blocks.
Rel advised me quite clearly that you need two Rel subs for mono blocks, one for each amp.
So I had to purchase another Rel sub.
I initially got a S3 but have since upgraded to a S/812.

Thanks sherifd2… But actually, just come across this.

https://relsupport.zendesk.com/hc/en-us/articles/115004486607-Class-D-Amp-Connection-Methods

Suggesting earth lift on class D, i.e. don’t connector the ground, and let the rel use it’s own ground as the reference.

If that’s the case I have no issue right? And no danger of hum.

Am I reading this right? Sounds like the answer I need.

W.

Yes, you can hook it up like this with no problem. If you do get hum, you can either hook up a single ended cable like they recommend in that link, or you can connect the black to the M1200’s ground post.

:+1: all working nicely single ended.

Thanks James.

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