PLEASE. Get Them.
They are basically L520s with modern cabinets (grille size is unique to this model only), which are, as I am hearing, ADS best 2-way next to the mighty and surprising L690.
They have the Braun style, small diameter stifflite dust cap (206-0323) which gives them somewhat of a midrange advantage over the 206-0355 cloth dust cap.
I love the beveled rubber surrounds and the resin encased magnets on ADS's smaller woofers (4, 5, 6, 8, 10).
They look like L570s with an L520 woofer, I wonder if the crossover is the same as the L520 or if it is like L570. Because I know the L690 is the 570 in a tower-- I am not sure about the crossover, though. If you'd be willing to note inductor, resistor and capacitor values, I'd probably be able to sketch out the dichotomy. If you'd please?
Great speakers, I just know it!!