question about surround speaker placement for 6.1
I've just purchased my reciever, a Yamaha RX-V750, and am about to purchase my Athena speakers, two AS-F2s for the left and right fronts, two AS-C1s for the front and rear centres, two AS-B2s (directed speakers) for the left and right surrounds, and an Athena AS-P400 subwoofer. The placement of fronts and centres are obvious, but I've been stymied as to where to place the surrounds. If you can see the jpeg I attached, I can place them at the spots marked A, B, or C, and their respective placements on the other side of the room.
Since the diagram is pretty crude, I'll also mention that the TV and couch are lined up with the centre of the rear-most wall. And that the distance from the couch to the screen of my 27" Sony Trinitron is about 9'. The distance from the couch to the rear wall is about 8' 4". And the distance from the side of the couch to the "A" mark is 6' 6" on the left and 6' on the right. Of course, the surrounds will be wall-mounted about 6', so that'll increase the distance a bit. The receiver can automatically adjust for distances of each speaker anyway.
The "A" mark is lined up with where the listeners' ears would be. The "B" mark at the corner is just behind the listeners' ears and is about 3' 6" from the side of the couch.
Ideally, I'd place the surrounds on the wall shared by the den and the dining area, about 2' 6" from the rear wall, but there's no corresponding spot for the right surround, cos it's only a half wall coming up to about 37"!
So, what do you guys think -- positions A, B, or C for the surrounds? Or is there a better spot I haven't noticed?
Thanks so much for any help you can give me -- it is MOST appreciated! I know very little about this stuff.
cheers,
supervij