Being able to tune the reverb time of the room is a big thing in churches. You want to be able to hear the pastor during his sermon, but then you want a more lively sound for the worship band or the choir. And some churches do theatrical shows several times a year. So something like a Constellation or LARES type system makes a lot of sense for churches since they fulfill multiple roles depending on what they are doing.
Church A/V/L systems are big business.
Or in performance halls.
You could have it dry for a corporate meeting in the day, then really wet for an organ performance that night, or medium wet for some jazz.
You could also set it with different RTs for different orchestral pieces.
Beethoven likes it drier than Brahms.
Touch a button and a second or so later you are transformed into another space.
I have done several of these systems, and they can be quite stunning and believable.
One of the simpler-and most interesting (to me) was in a Choir rehearsal room.
The choir loft was setup just like in the large auditorium (2500 seats or so).
But it was very dry (small) in the Choir room, but when they sang in the auditorium, it was quite different.
I started by doing a bunch of polar ETCs (TEF) to determine where the main reflections were coming from in the auditorium, and RT measurements.
I then designed a system to "mimic" the large room, by placing speakers where the reflections were mainly coming from.
I spent a good bit of time going back and forth between the different rooms (on either side of a hallway) listening and doing little adjustments.
I was quite pleased at how well I was able to "copy" the sound of the large room into the smaller rehearsal space.
I also gave them a couple of "fun" presets, REALLY wet for example.
The system used in this case was my own "concoction" . it was magnitudes less expensive than the "professional" systems. My boss called the "BVERB" For Beaver Reverb
I was not trying to fool European Acousticians, but rather just fool some "Southern Baptists"
