Equalization and bass traps

I just installed the Onix R-DES in my home theater system in my living room. Does anyone have an opinion about whether it is sufficient to focus on equalizing between 20-80 hz, rather than 20-120? If I limit my focus to 80 and below, I achieve a very flat curve (+/- 3db). But if I try to equalize all the way up to 120, the range is more like (+/- 7db) with some peaks right next to nulls. My speakers are crossed over at 80hz.

Also, does anyone have any suggestions for a company that makes bass traps suitable for a living room? I don't want many traps, maybe just one or two to put on the bottom part of the walls closes to the sub. The sub is already sitting on an isolation platform, which helps quite a bit.

I've stuck with 20-80hz using a velodyne sms1 & used placement to get best results above 80. Realtraps look fairly attractive, or guiford covered compressed fiberglass panels
Try GIK Acoustics. They have very interesting triangular cross-section columns which can be used along the floor/wall junction, or in the corners. Two for $260.
I agree 100% with Hhiggins.

You will find that a parametric equalizer is ineffective above about 80Hz for standing waves room mode equalization.

A typical room of 25 feet by 16 feet by 9 feet will have a total of six room modes below 60 Hz. At 120 Hz this jumps to thirty five room modes (many sharp peaks and troughs in the frequency response and spatially too).

In practice it becomes impossible to do much parametric equalization above 60 HZ to tame bass standing wave modes.

Concentrate on acoustic broadband absorption and speaker placement for modal issues above 60 Hz.

I find that four GIK corner Tri-Traps offer a modest improvement in room response above 100 Hz (subtle clarity improvement in lower mid range vocals was just audible and sweetspot became noticeably larger). See my virtual system to get an idea of the aesthetics. Any less size/surface area of treatments and you are unlikely to make an audible change. I should probably do twice as much treatment to get my RT60's even lower, but, for aesthetic considerations, I stopped at four of these thick broadband absorbers.