Do you offer an RAAL/crossover upgrade for the Symphonia 7.2 as well? (there is no price/options sheet for this model).
We'd have to use the OEM RAAL, but it is not currently available in the Symphonia.
Funny you should mention the RAAL tweeters, as I'm working to update the Duet10 for a client. Here's the Duet10R SE version while in development with OEM RAAL and ultra high end Accuton mid (note there is no finish on the cabinets yet):


This speaker uses the OEM RAAL tweeter, $614 ultra high end Accuton with neo magnet and underhung voice coil, and the Seas W26FX nextel woofer for a bit higher sensitivity than the magnesium woofer. Pricing hasn't been finalized yet, but expect it to start around 6-8k in standard veneers.
Also, can you offer an option for building out of bamboo plywood instead of veneered MDF?
Steve
Bamboo construction is an option as well, but the Symphonia 7.2 cabinets are very thick MDF with 1.5" front and rear panels and heavy shelf bracing.