Super Lumina in my humble system. Is it Overkill?

Only you can decide if the improvement is worth the cost of the cables.

They will, in my limited experience, give a good improvement but at a heck of a cost relative to the price of your system.

Much has already been written about what they do on this forum. Do a search, have a demo and then make you're mind up.

I think the sl cables would be a very expensive upgrade without improving the whole system.These cables deliver much more in a higher end setup. For less than the outlay you could consider the sl interconnect and a speaker cable like tellerium q black. Try a range of combos through your dealer at home first

Assuming the speaker cable lengths can be kept as short as possible, the cost of the 'full loom' would be about the same as an XPS.  Intuitively the latter would be the more obvious next step, but it would be very interesting to do a back to back comparison.  Perhaps your dealer can help facilitate that ?

I have not heard SL, but based on reports from those who have taken the plunge, it's not an option to be dismissed lightly -  even with your existing level of kit.

Nutty - if you told average Joe Soap in the street what you'd invested in your "humble" system you'd get a strange look let alone the cost of the SL wires.  Yes they make a discernible improvement but I'm inclined to agree that the XPS2 would yield more benefit.

Due to logistics I have no other choice than have my kit between the speakers which isn't ideal although the ATC's are a good distance away from the wall. This does mean both speaker cables and iC's are minimum lengths.

Ideally I only need a 2m pair but on the Naim price list the minimum is 3m. However, I've found a UK dealer with a 2m option listed so I've emailed Naim to confirm if correct.

This is the only test worth anything and will not be a waste of your dealer's time.  The ease with which your hand goes into your pocket  will indicate how good SL cable sounds in your system in your room and to your ears. All the rest of can do is guess. Lots of alternative speaker cables and IC cables are out there and like your ears, your own and unique perception of cost versus value will draw the line for you. 

I would at least try an XPS dr first, although the alternative you have may be as good. The XPS dr is significantly better than the original. 

I have a 272/250DR too, but as my speakers have to live near the wall I don't think the SL cables are a practical option, as they stick out backwards. 

I would also look at the Witch Hat Hatpin 4x din to xlr cable. It only costs £120 and makes for a good improvement. Finally, is your system on a good stand, and have you optimised your mains, with a separate consumer unit and 10mm spur for the Hifi?  And finally finally, have you got Powerlines?  I'd do all these things before thinking of SL cables. It's what I've done, in order to get the best from what I have, at sensible money. Well, sensible-ish. 

XPS DR makes more sense.

I found that the SL interconnect between the 272 and the 250DR didn't add much beyond the supplied interconnect, which is already very good. The SL speaker cables on this system are worth trying to see if you like the effect (more detail, but possibly with a slight loss of midrange warmth and groove).

On the other hand, the XPSDR is a significant upgrade and much better than the TP XPS that you have. I compared both and while the latter is good, it sounds lighter than the Naim XPS, which brings more midrange warmth and bass heft to the party.

Jan

I sounds like it has all been said and some good advice too.

Yes, I would say it is between the XPS DR (which is better than the TP) or SL cables assuming the system has already been optimised in other ways (good equipment racks, positioning, possibly Powerlines).

I tried the SL speaker cables and was very impressed. They seem to go very well with the 250DR. In your system the XPS DR may make more sense. There is only ONE way to find out and you know what that is.

By the way the received wisdom for introducing SL cables in stages is first the interconnect, second speaker cables, and last DIN to XLR cable. I went for the SL speaker cable first because I already had a Chord Sarum Tuned Aray interconnect. I have also not heard of 2m lengths of SL speaker cable with 3m being the minimum so you are right to check this with Naim.

A good Naim dealer (aren't they all) should be willing to loan you some SL cables and a XPSDR to play with. I would be interested to hear your findings.

You may want to have a read of this post & thread from a month or so ago:-

https://forums.naimaudio.com/to...a-for-classic-system

I had my reasons for going for the SL cables before the XPS DR (with SN2/NDX).

For me, with my ears in the context of my system, room and circumstances, they made a big improvement, one that I felt justified their purchase.

And I would not have made the purchase without the opportunity to home demo a set of well run in cables over an extended period, which my dealer was happy to oblige with.

As most have said here, the logical next upgrade would be the XPS DR, but ask for the home demo option to compare the options, it's the only way to make a proper choice as I'm sure you already know!

Good luck, and I'll be interested to hear what you find if you do 'go compare', please post back with your findings.

I would suggest you try it out, it might require a xps dr to hear the full benefit of the cables. As mentioned before it's not a waste of dealers time....

I found the SL cables made an improvement in my Classic system that equated to a black-box upgrade i.e. very significant.  That said, like others on this thread, I'd advice that you need to try some in your own system before deciding.

Mike

Some very valuable advice from all so thank you.

I will look at the XPS DR route v's Super Lumina speaker cables and take a view but before that I feel upgrading to Power Lines would be a wise idea. 

As for power supply, I have a dedicated radial although only 2.5mm at present so will look at 10mm. 

On the rack front I have gone for Hi-Fi Racks as the Fraim just wouldn't look right so a compromise I just have to accept. 

Yes, I think Powerlines would be ideal. This, and improving the mains, will ensure you have a good foundation. The Witch Hat cable is definitely a good idea too, and you can send it back if you don't like it.