Just out of curiosity and interest, does anyone here know what the equivalent Naim amplifier (in Naim’s hierarchy terms) is inside the n-SUB? Also, where was the main drive unit sourced from? Was it an in-house affair or a custom off the shelf part? Is there a required service interval? There appears to be very little known about the ‘aloof’ origins of this wonderful unit…
P.S Mine still working perfectly and is from a 2007 vintage. Ok, the remote has packed up. No big deal…
I’m guessing here the main drive unit is from B&W, but this is only from a visual through the grille, and a complete wild card guess on my part. Anyone?
I seem to recall from my nSUB days that the amp board was effectively a mono 250.2. No idea on the bass driver, but I doubt it would be from B&W.
Thanks for your input James. Wow! I have a 250 in da house?! That sounds great. Now i understand why my foot keeps on tapping. The drive unit is an absolute beast from a visual, it even moves my hair when ‘aving a goosey gander bruv.
My understanding is that the amp is comparable to a NAP200, albeit a more powerful 350W design, and is not a regulated design like the 250.
When Phil Harris was at Naim I asked him about servicing and he said don’t bother, as long as it’s working properly just leave it.
I remember it was perhaps a Volt driver that was used.
It does ring a bell and yes, it’s half a 250 amp wise.
If you get a chance Stephen, whip the driver out and then we’ll know for sure 
Yes, that is of course an option, but not one i’m willing to try, just for the sake of things. My piano black n-SUB is in mint, untouched (unmarked), condition and i’d rather it stayed that way… When Naim made loudspeakers they were quite informative in telling us the origins of their drive units. I can’t find anything about the one that is inside the n-SUB. Maybe somebody out there can enlighten us? 
IIRC the driver was made by Peerless, but would need to check at some point. The amp was said to be based on the NAP250 but not fully regulated.
Thanks for the info Richard, much appreciated. The n-SUB certainly seems a very well made unit. The depth, speed, tautness and tunefulness of the bass is excellent for 2-channel music, something of which i find missing in quite a lot of sub bass speakers in regards to stereo music replay.
Beast!
It certainly looks like the Peerless XLS 10. Well known as a very good driver. BK Electronics used to use it in their XLS 200 model. On the plus side, if it is the XLS 10, were the driver to ever fail, obtaining a replacement should be quite straightforward.
I recall that Naim’s literature described the N-Sub driver as a ‘custom’ design - so possibly modified in house in some way or maybe a variant manufactured to their requirements. Not unusual for Naim, but if they don’t have spares in stock, a straight replacement may be hard to find.
Yes, I don’t think it was an off-the-shelf Peerless item, but might be wrong. In the back of my dim and distant memory I seem to recall it had a more powerful magnet and longer throw, the aim being to get maximum performance from a driver of that size.
