@james633 , The Cornwalls are very nicely put together for a box speaker. The quality of the veneers and cloth are excellent. As for bracing, the front panel is braced by the woofer and horns, the sides, bottom and top are narrow and stiff. If they resonate at all it would be upe where the midrange horn is which is, by virtue of it's construction isolated from the enclosure. The back panel is the only one that might benefit from bracing. Just tap it with a mallet and see if it rings anywhere. If it does see if you can identify the frequency. In the old day the rear panel was screwed on and the speakers were mounted from the rear. Not sure how they are doing it today. But, if you think they need bracing you can always add it. My guess is they do not particularly if you are using subs.
With the active cross over you have Cornwalls with good subs would be absolute killer!
With the active cross over you have Cornwalls with good subs would be absolute killer!