Bass traps with bed foam superchunk

[Mattspunkm]

I have a couple of king size 10"thick bed foams. How would making these into 15"super chunks from floor to ceiling work? What if I did a vertical layer of rockwool also on the outside. I'm just trying to avoid filling an entire corner with rock wool to make a super chunk.

Would my idea benefit me?

 

[mjbphotos]

I don't think anyone has ever tried that before (and admitted it!) I suppose using it behind a 4" thick rockwool trap would supply a little more absorption. Foam doesn't usually stop the low frequencies, which is why you won't see it recommended here.