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terry j · 27th July 2009

yet another stupid question time.

whilst I have been playing around making diffusors, I need and will get on to some serious bass trapping.

I intend to basically build super chunks, but I need to make them look good. Additionally, I'd prefer that they be free standing, well as much as possible, so that I do as little mechanical changes/fixing to the house as I can.

So I was intending to face the chunks with cloth wrapped compressed f/glass, self supporting (with a frame behind it) and looks good, have not worked it out just yet but maybe with a 600/700 mm face across the diagonal.

Now here is the silly question.

What if instead of facing the chunks with compressed f/glass, I put the chunks behind a qrd about 600/700 mm wide? I mean the bass will still 'get thru' and be trapped yeah?

Have not worked out the qrd dimensions either, but if say I could get the qrd to work down to 300-400 hz, then the trap takes over? Maybe with a face that wide, I can get the wells wide enough that I could add nested diffusors..the ones I am making now are 102 mm wide...ie fractal style.

Is that a goer? does it have any positive features? negative ones? Or just stick to broadband in as many corners as I can, then add diffusors later.

I would really love to get thoughts and opinions on this, the sooner I can evaluate all the data the sooner I can start.

27th July 2009	#29
terry j Gear maniac Joined: Jul 2009 Posts: 296 Thread Starter	yet another stupid question time. whilst I have been playing around making diffusors, I need and will get on to some serious bass trapping. I intend to basically build super chunks, but I need to make them look good. Additionally, I'd prefer that they be free standing, well as much as possible, so that I do as little mechanical changes/fixing to the house as I can. So I was intending to face the chunks with cloth wrapped compressed f/glass, self supporting (with a frame behind it) and looks good, have not worked it out just yet but maybe with a 600/700 mm face across the diagonal. Now here is the silly question. What if instead of facing the chunks with compressed f/glass, I put the chunks behind a qrd about 600/700 mm wide? I mean the bass will still 'get thru' and be trapped yeah? Have not worked out the qrd dimensions either, but if say I could get the qrd to work down to 300-400 hz, then the trap takes over? Maybe with a face that wide, I can get the wells wide enough that I could add nested diffusors..the ones I am making now are 102 mm wide...ie fractal style. Is that a goer? does it have any positive features? negative ones? Or just stick to broadband in as many corners as I can, then add diffusors later. I would really love to get thoughts and opinions on this, the sooner I can evaluate all the data the sooner I can start.