Just received shipment of my Magnepan LRS’s

I'm not saying you are wrong, but when you get into defining success as only one approach, it seems a bit limiting.  I am new to Magnepan ownership so my definition of seamless may not be the same as yours.   As I listen to the LRS with the two REL T5 subwoofers fed off of monoblocks, with the subs directly behind the speakers and close to the wall, it sounds pretty seamless to me.  Occasionally there are some odd effects but for the most part the subs are more than additive.  My theory at least is the 8" fast subwoofer with downfiring isn't "competing" with the LRS by firing horizontally.  Further, a bigger subwoofer in this application will do zero and make for that more difficult integration.  I did speak with Eric @ Mag and he pretty much agreed with my assessment as to subwoofer choice in this case.  If Wendell wants to limit the subwoofer choice to one, then I guess that's his call.

Yes I've found if I keep the sub volume low it seems to sound good and I'm using a cheap used Sony sub for now.

I received my LRS a few weeks ago and changed my cables (since they were terminated for Vandersteen 2-series speakers). I am very happy with the new Magnepans.
I'm using a Mytek Brooklyn DAC+ as the pre-amp and a vintage Classe Audio DR-9 (400W into 4 Ohms) power amp. I spent a fair amount of time asking for opinions on optimal positioning and I refined those recommendations based on my room. Right now, they're about 4 feet from adjacent walls, 7 feet from my listening position, 4 feet (measured from inner edge of the speaker to inner edge) between them and the feet are deployed (my ears are 33 inches above the floor). They're positioned with tweeters on the inside and angled in 2 inches.

With that arrangement, imaging depth is profound and the lateral sound stage is equally impressive. Sound quality is quite good but I expect that to improve as they're far short of a 100 hour break-in phase, as are my new Kimber cables. So, I'm reserving final judgement on that aspect for the moment. At some point, I may add sub-woofers and there's an unsubstantiated rumor that Magenpan may be developing a dipole sub of its own design to complement these.
Anyway, I think they're very fine speakers and I have no regrets about the purchase.

Keith

AWESOME post!  Maggies win again, and always will!!!

To OP thomasj, Wendell Diller is a sales and marketing person.  He started at Audio Research in the 1970's with Bill Johnson and moved to Magnepan later.

Jim Winey's son makes the speakers now last I spoke to him years ago when he refreshed my T-1-C's.  No big deal, but thought you should know.

Cheers!