I thought the rear surrounds, since they are basically mono in 7.1, didn't need to be too far from each other?
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My other concern using my QS4's there would be that they have the top firing speaker. They are going to be mounted so close to the ceiling I'm not sure what impact that would have on the sound.
For DTS ES, and DD EX the rear channel was mono, but for the 7.1, discrete mixes on blu-rays, the each rear channel is completely separate. Even the 7.1 expansion of 5.1 mixes via Dolby Prologic IIx/z delivers a stereo rear.
You don't have to use a QS for your rear speakers. You were just under the assumption that they are not suited, and in general monopoles are better. But that's not the case, the QS series can work very well as rears, just as they do to the sides. But if they don't fit your room/budget, they don't fit.
