David,
The proper speaker for the application you seek are called "
Dual Voice Coil" (DVC) speakers.
Here is one
example I found on Amazon (not recommending this one).
- The picture shows it has two tweeters (Left and Right) mounted to one woofer and is fed both the left and right channels from your amp.
- Like Wayne said, the listener will perceive the DVC speaker as a mono music signal. This is good because no matter where the person is in the room, or which direction they are facing, the music will be clear and complete.
DVC speakers are very useful in situations (like yours) where the people are in various places around the room and not oriented in the same direction, thus negating the ability to provide a balanced stereo presentation except in one location with one orientation.
Concerning your diagram, using DVC speakers implies
doubling the wiring requirement to each speaker shown, as well as
doubling the number of amplified channels [i.e. instead of four speakers needing four channels (2xL, 2xR); four dual voice coil speakers will need eight channels (4xL and 4xR).
Clear as mud?
Cheers,
XEagleDriver