Citaat uit een review van soundstage.com:
"The drivers used in the Sophia were designed by Wilson Audio for the Sophia and are proprietary, which means you won't see them for sale anywhere for three years. And even after this moratorium you won't be able to buy the exact drivers used for the Sophia because Wilson Audio modifies them at their factory to get the last iota of performance from them. The 1" inverted-titanium-dome Focal tweeter is similar to the one used in the WATT/Puppy 6, as is the 7" ScanSpeak midrange driver, although it's obvious with the midranges that the two are different because of the radial lines around the cone of the Sophia's driver. The 10" woofer, also from ScanSpeak, represents something new for Wilson Audio in that its cone is made of aluminum. This is the first aluminum-cone woofer used in any Wilson speaker. The Sophia has two rear-mounted ports of unequal diameter.
Crossover components are of high quality, and that's all I can say because it's all I know. Wilson Audio is very guarded about their crossovers; when I toured their facility, they wouldn't even let me see where the crossovers are wired, although I did see, and photograph, one of the WATT/Puppy 6 crossovers in its potted Zero Halliburton brushed-aluminum casing -- stop the presses! I can't blame Wilson Audio for protecting its work, but mystery doesn't make for good review copy. Crossover slopes are chosen for each application, as are the crossover points. Don't bother asking about either."
Aangezien Wilson alle units mod (voor wat dat waard is...) wordt het hooguit een look-alike. Daar is het projekt er geen steek minder om! Wordt nog een flinke klus om die kast te maken. Gebruikt Wilson ook niet een of ander buitennissig kastmateriaal?
Focal heeft in hun car-assortiment de Berillium tweeter in het aanbod. Misschien een leuk alternatief voor de TC120Td5?