solid7,
I'm new to this forum. I usually hang around at PE board & diyAudio forum. If you look for a multi-driver, cool looking in-wall speaker design. I can design one for you. In fact, designing a crossover of an in-wall speaker system is relatively easy since in most cases we can use driver manufacturer's infinite (or IEC) baffle measurements. No in-box measurement or simulation is needed.
If I were you, I'd consider one of these two designs:
1) Dayton RS125S-8 (or RS150S-8) with Dayton RS28A-4 MTMMM 2.5 way
This design will not only look cool but also sound very clean. The upper two midwoofers will be used as midrange drivers and the bottom two will be used as .5 woofers. You can see the info of these drivers at PE:
http://www.partsexpress.com/pe/pshow...number=295-360 http://www.partsexpress.com/pe/pshow...number=295-362 http://www.partsexpress.com/pe/showd...number=275-130
2) HiVi F5 with RT1C-A MTMMM 2.5 way
This design may be a tiby bit less clean than the above, but will still sound great and look extremely elegant and eye-catching. The same MTMMM driver configuration as above. Drivers are:
http://www.partsexpress.com/pe/pshow...number=297-435 http://www.partsexpress.com/pe/showd...number=297-400
Let me know if you're interested.
-jAy
FYI, here are my speaker building web pages:
http://www.geocities.com/woove99/Spkrbldg/