That's great, thanks for tall the info! As mentioned all this treatment in this room needs to pass the WAF which means nothing permanent on the walls. I have some temporary panels I put up to absorb mi-high frequencies when I mix. There are little to no flutter echoes remaining. Really all's i need is something, anything to absorb more bass than what is being absorbed right now. The bass isn't a huge problem, but I'd like to take SOME means of lessening some of it. That was why I wanted to make the tube traps, even though there not as effective. I'm not about to fill the corners floor to ceiling with rigid fiberglass (which is apparently unavailable in Canada), then staple fabric over it, etc. Thing like that DO NOT pass the WF. haha.
So thank you greatly for all the info!
Audiofire12 | PT10/11 | CL 7720 Comp | Pro VLA II | dbx163X | GAP Pre73 | M80 | Pro MPA II | iMac | 2xBCF2000 | Big Knob | BX5a Dlx | KRK10S | Minimus7 | Auratone | JBL J2080