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kraskland · 4th March 2009

So I've been making traps using Rockwool Delta 212 insulation. I've finally got specs on the stuff and it turns out to be 40Kg/m3 (2.5lb/ft3) which is less dense than what I thought it might be. The early reflection and bass trap for behind the speakers are 4-3/4" thick. Is this sufficient or should I make the traps thicker or replace with a denser material (if I can find it)?

I had also planned on making a back wall trap of 7" thickness and superchunk style traps with a 35" face. Will this stuff do?

4th March 2009	#1
kraskland Gear nut Joined: Nov 2008 Location: Brussels, Belgium Posts: 90 Thread Starter	Question on Rockwool Density So I've been making traps using Rockwool Delta 212 insulation. I've finally got specs on the stuff and it turns out to be 40Kg/m3 (2.5lb/ft3) which is less dense than what I thought it might be. The early reflection and bass trap for behind the speakers are 4-3/4" thick. Is this sufficient or should I make the traps thicker or replace with a denser material (if I can find it)? I had also planned on making a back wall trap of 7" thickness and superchunk style traps with a 35" face. Will this stuff do?