It is a fact that most rooms are rectangular or square in shape.  This is a huge problem for sound reproduction in that standing waves are generated that create nulls and peaks at the nodes for any given frequency.  The more regular the dimensions of the room (i.e. 3m x 3m x 3m stud) the worse the problem. 

The remedy is to design the room in odd dimensions with walls not quite parallel, and this a great reason to get your home theatre consultant engaged in your project as early on in the design phase of the house as possible. 

If the room design can't be changed or it has already been built - there are several remedies for room nodes, slap echo and first order reflections.  Treating these is outside the scope of this material but for further information please visit www.aa.net.nz  and arrange a consultation with a home theatre engineer.

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