Bass trapping - corners or walls?

I have made four "ASC" type of traps, going by their diagram.  They have helped with general slap back immensely, however, IMO, if you have a bass problem, you will need to go with either a parametric eq, or something besides ASC type devices.  It all depends on your room. Some say any tone controls detract from the sound.  I'm running all analog and even though I have many absorption panels, believe I either need to get a very expensive parametric eq, or make some diaphragmatic absorbers.  I have a problem with  30-150hz.  I've put so many panels of 1" 2x4 703 compressed insulation, I have begun to suck the life out of the music.  I'm going to put some wood facing over about half of my panels and make a couple of diaphragmatic absorbers.  IMO, if you have a heavy bass problem, anything else will be a waste of time and money.  I'm very open to any suggestions.  I have a good quality graphic eq in the mix( Samson S-curve 231), it just doesn't get the job done. My room is 19x21x10 and has 'knee" walls.  I realize tone problem is my room dimensions-too square.  I keep saying I need to post some pics, but don't have a wide angled lens.  Equipment used:  VPI Scoutmaster w/ DRT XV-1s cart, Theta Miles CD transport, Aesthetix Rhea Signature, Aesthetix Calypso Signature, Krell EV-600 monoblocks and a couple of Wilson Maxx II's.  All suggestions welcomed!!  As Milla Jovovich once said "please help."

@auxinput@geofkait:  My tubes have 12” of sheet metal, facing toward the listening position and are out between the listening position and the side wall on the same plane.  The other two tubes are straight out from each speaker, up against the side wall.  I used 1” compressed fiberglass panels and most do have the foil.  They’re placed 2” out and mounted on my knee walls with extension brackets, so the back of the panels will do work too.  I’ve considered building some diaphragmatic broadband traps, like acoustic fields advertises. I need something in a wide range of lower frequencies.  I do have a higher build up around 60 hz, but think the absorbers mentioned from Dennis Foley will take care of this.  BTW, I read where he’s going to have a traveling room, where he will pick cities to demonstrate his absorbers.  Does anyone have any direct experience with his products?  I have my 2 subs coming out of my line stage tape monitor loop and connected to a Sony E 2000esd, so along with the room correction program on the subs, I can remotely control the volume for the subs, as well as control the frequency, with the parametric eq on the Sony, depending on the album/CD played.  I’m seriously considering a Manley Massive Passive, but the cost is high.  Any thoughts on this?

@geoffkait   Sounds interesting, but I don't have the space. @auxinput I would never buy the absorber from Foley-can't afford the shipping for one thing. Sounds like u solved your problem. Mine has too many problem frequencies for that. Although it may not sound like it from what I'm saying, my room sounds pretty good. RTA says the frequencies I mentioned are a little hot.