I have a pair of 77’ CW Decorators. Got them in a trade w a friend.
He had upgraded the crossover to a Crites, as well as upgrading the super tweeter.
They were quite boomy/shrill when I put them in my small - 11’x18’ - listening room.
I did some internal bracing to the enclosures and damped the horns, as has been suggested above.
Love the Cornwalls! The best I’ve heard them here, is being driven with my 30w Hiraga class A SS amp, using a tube pre. So dynamic, huge soundstage with very good imaging for such a big speaker in such a small room.
One of the big benefits of having these speakers is I have a wide range of amp options available to me. As an avid DIYer of audio gear, they really showcase differences in the gear driving them.
Late night, low volume listening and they do not disappoint. Capable of such delicate presentation, but when you need them to go big, they can.
Not for everyone, I get it, but these are staying for the long run as they are a great option to keep in my “inventory”.