Speaker placement for 2-ch AND 5-ch same room


I am building a dedicated room for my gear. I have reasonable architectural freedom, but not unlimited space. Right now we're looking at 15 x 21 x 9 or thereabouts.

I have suddenly realized that I have enough equipment to install two separate systems, one for 5-ch and one for 2-ch. I'm looking for advise as to how to position the speakers. The 2-ch mains are MartinLogan Odysseys; if we go with two systems, the 5-ch mains would be ML Scenarios with Cinema center. The screen is retractable and automated, so I could have the screen drop in front of the Odysseys and place the Scenarios outside of them and slightly in front. I think that putting the big Odysseys outside the Scenarios would start to put them too close to the sides of the room (screen is 92" diag = 7' 6" wide plus tensioning).

My priorities is 2-channel, but I got WAF by making the 5-ch movies work well.

Any other suggestions? Am I nuts?
blw

Showing 1 response by davehrab

Here is some food for thought,before speaker placement issues,note that your dimension of 15x21x9 have a commom denominator of 3,meaning all dimensions are divisable by 3.When this occurs(all dimension having the same common denominator) there is a chance of peaks(boosts) and vallies(suckouts)at certain frequencies do to the room dimension excessively renforcing each other.Is it possible to stretch the room to 16x23x9 ? I would contact Audiogon member RIVES,and run it by him.I may be overracting,but an ounce of pervantion is worth a pound of cure.
Good Luck
Dave
davehrab