Welcome to Axiom. At the relatively short listening distance you'll be using, surround effects and music ambience will be better with wide dispersion surrounds such as the QSs. Although the QS4s should be adequate at that distance, if your budget can support B-stock QS8s, they'd be advisable.

One suggestion is to mount the QSs about 2' above ear level and about 2' back, rather than directly to the side, to add a bit of "back" effect in the absence of actual back surround speakers. Enjoy.

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Enjoy the music, not the equipment.