Correct
such a fantastic resource!
after hours of researching, this was just a wild toss to put out there and tap all of the experience in our forum. Makes me grin that we all are enthused to offer help, insights, experiences. I will swap to the amp end. In the REL manual, I recall lit drawing out yellow to Right positive, Black to Right Ground, and Red to Left Positive and they supply a dummy piggy back that has no wire, but evens out the speaker leads @ input.
My logic was the signal enjoying the SL quality as long as possible, but …proof is pudding and I’ll share what I find.
REL did a great job of making the input cable very long for sub placement.
What would be like an Xmas gift would be….
Sub frequency dial goes from 30hz to 120. there are 33 clicks, so each click is 2 hz. What I have read, having never played with sub’s before, is to put the rolll off freq just below the lower level of the speakers low end spec.
So I have played around with REL roll off around 40….rolling off lower makes the sound lose some of it’s high end airy brilliance, rolling it off higher, I just have concern that I may damage N-Sat.
I have found that. some music, it almost needs changing. I love Radiohead, Zero 7, Air Peter Gabriel, Ray Lamontagne , Portishead, Ani Difranco, Tom Petty, Ben Webster, Jack Johnson, Brian Eno, Morphine, Ennio Morricone ….and I have sometimes found myself wanting to get up and change a setting.
anyone have any experience with these finesse settings? 
Are you sure? It’s usual to set the sub filter to a little higher than the lower limit of the main speakers so that there is a slight overlap. For the N-Sats Naim recommend 60Hz, which is 10Hz higher than the speaker’s 50Hz lower limit.
The N-Sats will not be affected. They receive the same full range signal regardless of the sub settings.
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Vince’s hairdo was much admired in this realm.
Not sure your maths is right! If linear (and it might not be) it would be 2.7Hz/click on the basis of your figures, but doesn’t REL tell you?
Good morning HungryHalibut. Attached is the relevant section from REL manual for setting up a pair of S212s. They indicate Yellow/Red are combined rather than split between +/- (as is the case for a single subwoofer). I have tried splitting the yellow/red this morning but it doesn’t sound better - I am playing at low volume as it is still ahead of the first cup of tea for the boss 
. I will try at higher/normal volumes later in the morning and feedback which I think sounds best.
If using a pair of subs you’d connect as you have. If using one sub, you connect to both channels.
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Connected back up as per REL guidance. Sound quality back as it was. Nothing ventured nothing gained
Ah, so you have two subs. Apologies, I didn’t realise that, or I wouldn’t have suggested moving the plugs.
I’m on record as saying this was the system that sounded at its considerable best in the rather quirky Naim listening room - a place where ‘better systems’ often sounded a bit off.
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in the aviation instructors manual, what one studies to become a flight instructor, which I did for several years in early career, it has many salient concepts which transfer to all of life
learning is defined as a change in behavior as a result of of experience
well, learning has occurred, thanks to all of the input from your generous investment of time in sharing resources and your own hours of experience in trial and error. I can’t thank this group enough for the quality of experience I get, when I take away from your learning, and apply in my music passion.
changing the plug end made a huge difference is the body and weight and depth of sound stage.
changing the Hz to the proper position in relation to low end of N-SAT opened up massive amounts of mids and highs and moved the height and perceived position of musicians and instruments, an unbelievable amount.
Learning has occurred!!
Thank you so much for all the input from everyone.
now I just need all your addresses to send Xmas cookies 
I have been so blessed in past couple of years in this hobby…with a 500, 552, 555, 2 x 555 PS, supercap, Superline, LP 12 and Aro (thanks to Chris Koster) and a Lrya Aetna all through K6 Signatures…music was an experience into which I become completely lost.
Blasphemous perhaps, but in this tiny space, with the 222/250NC and N-SATs…I hear details in this tiny space, never before heard. and the music appears to originate from way off in the back of Good, the Bad and The Ugly, to directly behind my head in tracks like Packed Like Sardines by Radiohead. I could live with this system forever…hard to write down … but it’s gripping, it’s out there in one’s face, the high end is surgically clear and articulate. and the bass felt through one’s whole body at just the right times, with no boom or out of tune presentation.
And someone was right…my math was off….30 clicks 
Thank you all again…I owe this elevated experience to this forum.
Cheers
Fred
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