Hi all, about to trap my corners and have a couple of questions. I can't get the semi rigid Rocksul locally, the heaviest i can get is 27kg/m3. Is this heavy enough for traps?
Also, most build their traps as triangles across the corners, would it be better to make them square buy cutting the 1200mmx600mm insulation panels in half then stacking them? So basically it would be a 600mm square column in each corner....
That's about 1.5lb/ft3. You can look through www.bobgolds.com/AbsorptionCoefficients.htm and compare the various materials. They say that less than 0.15 difference isn't significant. If you make 27kg/m3 thick enough, then you should be fine. 8" is ideal for rigid.
So this 1.5lb is about the heaviest I can get, the only other option is foam traps but I read that foam isn't as good as insulation. Supertrap link: nzacoustics.com/BassTraps.htm
Web Quote "Manufacture, All above Bass Traps are made from bonded Polyester fibre @ 200 Kgs per M3 density (2 extra layers of 35 KG/M3 for Super Bass Trap). Light, no irritation, eco friendly, washable, fade resistant, fireproof & 100% NZ building regulation compliant."
To increase density of the wool type insulation can I just compress it? Will compressing it say 50% greatly improve its performance in the lower frequencies?
So would you muck around building traps or just buy something like these Supertraps?
I built my panels but, if I had tons of extra money or was super short on time I'd buy them. We know about nzacoustics - he used to post here - but I have no first-hand experience with his polyester products. You'll have to look at the absorption coefficients and compare.
From what I know, you don't want to compress insulation on your own. You can fluff up fluffy but you don't want to smash anything down. The reason I got was because you end up with an unknown or more uneven coefficient.
I don't know if foam isn't as 'good' as much as it is more expensive and difficult to mount effectively. Just know, I'm a DIY guy so all my experience comes from that rather than commercial products.