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QRD diffusor as sound sidewall? Size?

I am thinking about to DIY a pair of QRD diffusors to use it a side wall, separating my listening space and the kitchen area in the living room. The speakers are 10cm back to the wall because it is a kind of what sounds best like that (acoustic foam is planned to set behind). Cube Audio Nenuphar Minis. It`s a small place I know. The height of the room is 2.3m (7.6foot). The length is 3.1m (10.1feet).The space between the speaker is 1.6m (5.2foot).
Is it a good idea to have a QRD as side walls? What size would good? The max size what I can fit would be around 1.2-1.5m /4-5foot) tall, 30-35cm (12-14") deep and 1.1m (3.6foot) long. I was also thinking about to DIY bases under and use it as bass traps, but I don`t have much problems with bass, just around 400hz. 
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Showing 1 response by jwl244

jwl244
64 posts
 
If you mean that one side is a wall and the other side opens into your kitchen you should absorb on the side wall not diffuse. The open space into the kitchen acts like an absorber since sound get in there and gets "lost" and doesn't return to the listener. You would want to mimic this on the side wall which would be absorption. 

If you mean a regular room with 3 walls and the kitchen behind you... I have heard of people doing both absorbing or diffusing or a combo panel. I think in a room your size it may be best to absorb to control reflections. 
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