Check my Multichannel Music system for component details, but I have 6 identical speakers (one is a rear surround, but is not currently used by any of my software). All are stand mounted at the same height and equidistant from the listening position. I currently have this in a 10x10x8 room. That is unfortunate, but currently necessary. I am moving the beginning of April and will have a dedicated listening room of 11x15x8. Still not big, but infinitely better that 10x10x8. Sony got me using the ITU standard based on the SACD-Multi inserts they and others were including in various SACD-Multi releases. It works very well for me with the multichannel music (SACD and DVD-A)I listen to.
\ | /
/ \
|
Happy listening!