It is very frustrating but few dealers will keep very expensive speakers on the floor because the market is so limited. It is not Magnepan's fault. If they insist on dealers displaying the top of their range they just lose dealers. The dealers that do display them have a clientele that is more likely to purchase them.
I have not set up 20.7s yet but I have 2 pair of 20.1s which are very similar. The 20.7s have what is arguably the best tweeter ever made. The ultra high end is even better than an ESL. Because they are taller than the 3.7s they project power in the mid bass better becoming linear arrays down to about 150 Hz. Like the 3.7s the bass is going to be very sensitive to position and they will not do below 40 Hz with absolute authority. I always set them up with sub woofers then done correctly you have very close to the ultimate sound at less than 1/2 the money. There is no point source speaker that can compare. The only speaker I would prefer is the Soundlabs Majestic 845 or 945 and they are about 40 K and much larger.
In short I have absolutely no problem recommending the 20.7. If I am wrong you can publicly roast me on this forum
I have not set up 20.7s yet but I have 2 pair of 20.1s which are very similar. The 20.7s have what is arguably the best tweeter ever made. The ultra high end is even better than an ESL. Because they are taller than the 3.7s they project power in the mid bass better becoming linear arrays down to about 150 Hz. Like the 3.7s the bass is going to be very sensitive to position and they will not do below 40 Hz with absolute authority. I always set them up with sub woofers then done correctly you have very close to the ultimate sound at less than 1/2 the money. There is no point source speaker that can compare. The only speaker I would prefer is the Soundlabs Majestic 845 or 945 and they are about 40 K and much larger.
In short I have absolutely no problem recommending the 20.7. If I am wrong you can publicly roast me on this forum