High density fiberglass as bass absorber?

I've read for days concerning various DIY bass traps. Tubes, resonating panels, Helmholtz resonators, and all manner of rigid fiberglass designs with and without air gaps and with and without limp mass membranes. For the moment I am interested in quick and dirty bass absorption with no regard for aesthetics. Rolls of insulation stacked in the corner are said to be useful.

From what I've been able to gather, generally the effectiveness of fiberglass products increases with increasing density. Owens Corning Atticat fiberglass insulation comes packaged in plastic bags having dimensions of about 9"X 20"x 38" (about 4 cubic feet of volume). The weight is about 35lbs. Therefore, as packaged, it has a density of about 9 pcf. With OC 705 having a density of about 5 pcf, would we not expect Atticat to be a bit more effective at bass absorption than OC 705 per unit volume?

I don't find any mention of anyone trying to use this product as a bass absorber. I'm gonna try it, but before I do, perhaps someone out there can tell me that it doesn't work or why it won't work. Anyone?
That looks like a real effect. A bit unpredictable maybe, but real. Any idea how dense the insulation was as packed into the tubes?

I will stack some bags iof this Atticat stuff into my window dormers, measure the low frequency levels in those dormers and at the listening position before and after, and we shall see what results. I'll also compare with a 20" ASC tube trap and a Realtraps Mondo Trap. Check back in a couple days.
See this Acoustic coefficents.

Basically thickness or volume is FAR more important that pcf. I'd make sure you are above 1.5 pcf and not more than 6 pcf and get the maximum volume you can. Since you want broadband absorption it is the volume/thickness that is most important.
A veritible goldmine of useful information. Now I retreat into my cave to see if I am able to utilize it effectively. Thank you Shadorne!