Any Thoughts On These?

@high-amp 
re; Magnolia?!@%  Ignore all replies from anyone who walks into a BestBuy-Magnolia store and comments on the sound of ML Motion 60s, 40s when using their typical amp and speaker switching board setup. Its garbage, truly impacts the sound of the speakers.   I run them in a tertiary home theater system and helped a few friends with them.     

The ML Motion 60 and 40 AMTs and mid-woofers CAN perform and sound much nicer at home with a quality amp, source, cables setup in a decent room.  Tested mine on multiple class A/AB SS and Tube, PP, Triode amps for grins.  Gotta take 'em home and try them to know, setup matters.

Comparing the Motion 40s vs. Motion 60s, if you have a really good (fast & clean) subwoofer to go along with your system, try the 40s too. Remember, AMTs are super-duper-fast. Need a good fast sub to keep up.

With the smaller mid-woofers and smaller AMTs in the Motion 40s, they sound a bit more neutral and a tad less tubby on the bass using a mid-fi grade amplifier. If you step up like @knighttodd has running a higher current/quality amplifier to control the woofers, either ML40s or ML60s "can" sound even better. The room size/shape and speaker positioning matters too of course. Your situation may vary.

The Motion 40s are (92db sensitivity) and Motion 60s (94db sensitivity) and I did some testing with a small 10-watt triode tube amp for fun. While they sounded nice and smooth, good midrange, these Motion series speakers do appreciate a bit more power and control using a more capable amplifier (think big transformers in the amp) to perform their best.

Running standalone speakers only, I liked the Motion 60s only when paired with really good amplifier(s). Need not buy the Motion 60s (for 2ch audio) if you re only going to run a lower grade HT receiver, its a waste of money for the 60s. They deserve a lot more. With a great main stereo amplifier, and paired with a great subwoofer the midrange and mid-bass on the (lower model) Motion 40s also sounded really nice, neutral, nothing stood out too much. A few buddies preferred the Motion 40s in a smaller room setting too.

I did not get a chance to hear or try the Motion 60 speakers with a pair of really good 100wpc push-pull tube amplifiers. Tried the 40s with them though, and they sound great. I design and build my own AMT speakers for fun the past 3+ decades, and believe there is even more potential to the ML Motion 60s given a chance. Step up on the front-end, power amplifier(s), and the Motion 40 or 60s can sound very nice. Best of luck

@oldaudiophile btw, I worked at ESS early 1980s :)

@high-amp

I’d add "quality" amp first, then power (watts) comes second but still important. With 92 or 94db sensitivity speakers, I’ve heard 8-watt tube amps with big, quality, transformers make wonderful music. Excluding class-D, most of the really good class A/AB amps I’ve heard or tried for fun with the Motion series had high build quality and always weighty designs, in general terms always 40lbs (per mono amp) or above. The SS stereo amp i tested with these was 87lbs.  Big iron.  Opposite of these amps at 17lbs with boxes and transformers smaller than your fist. Again, general terms but keep an eye out for big quality iron.

See @hilde45 prior reviews on Motion 60xt speakers I think it was, I believe he tested with at least 60wpc tube amps and some other solid-state integrated amps 60-200wpc range. He was dealing with room conditions as I recall yet got a sense of how the different amps complimented the Motion 60. I’d always buy a quality 40-60wpc high quality tube amp with quality parts before a 100pwc amp with lower grade design and parts, fwiw. Opinions may vary on this. Demo at home is best if you can.

When Magnolia consolidated their independent stores and shoehorned them back into the corner of BestBuy stores, seems like they lost their mojo for 2-channel audio displays and demos.  Focus kinda went back to home theater and hand held gadgets. Not surprised they lost Sonus Faber.  

Like @hshifi said, if you know what you are looking for and they still have it or can get it from another store, may be some deals to be had on ML, SF.   

@knighttodd
Hooked my ML 60xti to my PL EVO 400 amplifier today. Listening to some Pink Floyd Division Bell. These things are fantastic. RME ADI2 Dac Fs. Can’t be better.

By chance were you running EL34 output tubes in your PL EVO 400 amp at the time of our test of the Martin Logan Motion 60xti speakers? If so I could see how that particular matchup could sound nice.

Forgot to mention earlier - while I have all Motion speakers in my other home theater system setup, they sound quite different now after some run-in time, drivers and surrounds loosened up, x-overs and all settled in. More transparent and no longer tubby sounding like they can be brand new. Using a 200 wpc x 5 class AB mosfet solid state amp to power them. They truly benefit when used with a capable amplifier.

Make sure you burn in those Motion 60s for a solid two weeks [at least] before making hard judgment. For my HT setup, and tested with 2ch too for fun, my five Motions sound much more clear, transparent, with more accurate bass after having broken them in. Those mid-woofer surrounds are kinda stiff at first, and they do sound tubby at first, even the x-over caps and the AMT tweeter diaphragm settles down and focuses more a bit after some good solid play time. Day 15 and Day 60-90 were notably different on mine. Most people who return them do so before they are even broken in. Best of luck.  

The Motion 60 and 60xti sound [notably] better with a higher quality higher current amplifiers. Well designed AMT based speakers can sound truly amazing only with (select) heavyweight tube amplifiers. Bright sounding lower grade amplifiers need not apply here, they reveal what you send them.