My room is pretty similar to yours (approx 12' X 26.5') and I have the speakers on the long wall. I just traded my Dyn C1 Sig's which IMO worked best at 6-7' apart with almost no toe in. Great sound stage - imaging and very impressive bass for a 7" driver (I do use a Rel B3 sub for the lowest octave). Nice wide sweet spot for listening. Very musical sounding.
That being said I traded them in for Raidho D1's. Completely different. Much more detail with a great tonal balance (much blacker background). Per the Raidho setup they need to be 9' apart and aimed at your shoulders. The D1's don't go as low as the Dyn C1's (but I do have the sub). The sweet spot is very focused and narrow. Like one reviewer wrote "Outside the sweet spot they sound good, in the sweet spot all I can say is Good God". Best imaging and sound stage I've ever heard in the sweet spot.
I'm driving them with an Octave V110 with a Naim music server and Naim Dac which replaced my Meridian G08.
That being said I traded them in for Raidho D1's. Completely different. Much more detail with a great tonal balance (much blacker background). Per the Raidho setup they need to be 9' apart and aimed at your shoulders. The D1's don't go as low as the Dyn C1's (but I do have the sub). The sweet spot is very focused and narrow. Like one reviewer wrote "Outside the sweet spot they sound good, in the sweet spot all I can say is Good God". Best imaging and sound stage I've ever heard in the sweet spot.
I'm driving them with an Octave V110 with a Naim music server and Naim Dac which replaced my Meridian G08.