Speaker Placement


Hi
I just finished my Audio Room and need help regarding speaker placement. The room is 20ft long by 16ft wide with ceiling height 8ft 9 inches. This is located in a basement all poured concrete. The front half of the room is carpeted while the back is wooden floor. If I sit facing the speakers the right wall is all uneven stonework and on the left I have placed some DIY panels at the first reflection points. Behind the speakers I have placed 2 DIY corner traps. So far the ceiling is bare and I have no panels behind the speakers. I have placed the speakers 3ft from the side wall and 4ft from the front wall all measured at the centre of the drivers. While the sound is very good (no bass bloat ect.) I am unable to get a good sound stage.  The seating position is about 3ft from the back wall. 
My 2 Ch. equipment is as follows. 
Speakers B&W 800D (Not Diamonds)
Power Amp Krell KRS 200 Mono Blocks
Pre Krell KRC 3
Sources Cambridge Audio Stream Magic V1 and Clear Audio DC Performance with Dynavector D17.
Phono is Project Tube Box DS. 

I just want input if this sounds right as far as the placement goes. Should I try and move the speakers closer together? 

Thanks
srafi

Showing 2 responses by newbee

I like Pop's response. Believe it or not everyone has a slightly different perception of what constitutes a good sound stage. FWIW I started with the Cardas recommendations and after a long time I ended up with my speakers 9' apart, 5.5 ft off the back wall, my chair 9 ft from the plane of the speakers and about 4' off the wall behind the chair, slightly off an equilateral triangle. I toed the speaker in so their axis crossed in front of my hear to avoid sidewall reflections. What I get is a very clean clear precise imaging between the speakers with substantial depth. What I don't get is out of phase sounds outside the boundaries of the speakers that is not in the recording itself, unlike many panel and bipolar speakers make and a lot of folks seem to love. 
To widen the sweet spot try crossing the axis of your speakers several feet in front of your present listening chair. That should do it, but you are still talking about a fairly focused image that will be appreciated by several people sitting in front of the speakers. If you want something more than that you probably need something like 'omni' speakers which would do a much better job of filling a room (at considerable loss of specificity).