Any other Sony SS-AR1 owners out there?

Knghhifi..The speakers made in Mexico at Kmart are a better deal than the one's at Walmart.

Face..there is very little audible difference between a neodymium and ferrite magnet. It would mainly apply to air chamber differences. Neodymium became the rage in the 90's due to there higher magnetic flux, and the ability to move current three times faster than ferrite. China currently has a monopoly on neodymium, and it is far more costly than ferrite material since its a rare earth metal. The main benefit is that less mass is required with neodymium than ferrite, resulting in a lighter, more compact driver.
Large ferrite magnets are like capacitors, and can handle larger voiumes of continuous current. The tweeter in the Sony's have a maximum rms rating 0f 90 watts. The tweeter in the Aerial 7T can handle 200 watts rms without breaking a sweat, due to there large magnets and there one inch copper voice coil. Neodymium's overheat more easily than ferrite, so avoid clipping your amp. You will destroy a neodymium if it overheats, which is not a problem with ferrite.

Where are you getting the 200w figure from for the 7T's power rating?

Sony's 90w rating is 100h(hour) RMS, not peak and 150w long term max-power, which means they're capable of playing music at a constant 114dB @ 1M each without clipping. Add in Sony's higher crossover point and power handling should never be a concern unless you're attempting to fill a very large room or trying to make yourself deaf.

I'd still like to know how any of this have an effect on dynamics as the woofer(s) are usually the limiting factor on overall efficiency? Or as you mentioned before, detail?

Congratulations, Dserota. I'm sure you're loving the crap out of your new shpeeks. But really Audiozen, if you think that SBA mid you mentioned is "built" in WI, you need to do more research. Trust me on that. And yes, Dserota deserves a little more respect.

I ran them through their paces at the SHOW in Newport. I brought three non-compressed master files, two live soundboards and one master file. They perfectly recreated both a Midnight Oil and Neil Young/Crazy Horse soundboard to where you thought both bands were in the room. I can also say that they had hundreds of thousands of electronics behind them, including very impressive and muscular sounding PASS amps. I am a big fan of ATC and have to say that these are amongst the best speakers I have ever heard, a triumph of engineering. Sony did an amazing job on this project and I think they smoke anything by Wilson and Magico. I think you will be very happy with your investment.