I found a website for Bass traps
Geisen DIY Corner Bass Trap
Instead of owens 703he used 16" of loose R-25 fiberglass insulation. he pressed it down so it would fit into a 2x4x37" wood panel. The rating on ther R-25 say about 4.75 lbs psq ich I think
Lowes sells this for $9 a roll so I could make about 9-10 traps for $90
The Manville, owen and others cost 3 to 4 times as much. He used chicken wire to hold the R-25 in.
Is this as good as the other method. It is so much cheaper. better on the budget
thanks