Room Treatments - ATS Corner Bass Trap

@hbarrel Foam is not a bass absorber. Don't waste your time with those. And foam is not effective on the other frequencies other than the most highest and shortest. There is data out there where you can see the comparisons.

Rockwool or equivalent fibrous material with proper NRC values are needed. So, yes, when you see recommendations for placing bass traps across the corners it is usually based on buying a rectangular panel and the need to capture the bass frequencies in the corners where they build up and reflect back out into the room. I go further and fill in the back side of those with triangular fixtures.

Owens Corning 703 is very stiff fiberglass that is great for mid to high frequencies, but not bass frequencies. More loosely packed fiberglass like Rockwool is best for bass traps. OC703 can be cut on a table saw it is so stiff. I use a cheap meat slicer from Walmart for cutting Rockwool.

For instance, the GIK Soffit traps are the most effective for bass because there are no spaces left untreated behind them. Check out their test results. By filling in the triangular shape behind the panels placed across the corners you effectively replicate the Soffit trap.

@bugredmachine thank you for taking the time to reply in concise manner. 
Very much appreciated. 

I have used the ATS corner base traps in my 14’ x 18’ x 8’ room for many years.  They helped even out and clarify the lower register response in my room in conjunction with the room also employing additional 4” x 2’ x 4’ ATS absorption panels and some diffusers.   The quality of construction and appearance also add to their value.  Nothing will fully address nodes that exist in the space but the effects of them being present is very positive.  

@hbarrel You are very welcome

I updated my TN systems page with new pics of the room and the traps. I have smaller triangle bas traps in the rear corners also behind the Real Traps diffusers.

jsalerno277 - congrats on your discovery that treatments can provide real substantive sound quality benefits.  I am a bit surprised at how a single trap made so much of a difference that you listed, especially in an open concept room - I don't doubt your findings and would encourage you to expand your coverage as WAF, budget, and space allows.  Absorption of bass energy helps:

• remove modal peaks and fill in nulls for better symmetry of Left/Right speaker loudness.
• reduce bass decay times that are too long relative to the average midrange decay times and as such can improve midrange clarity by reducing what was bass masking before the treatments.  Aim for your lowest 1/3rd octave interval of <500ms or ~150% of the avg midrange decay times, whichever is lower.  For example, if your EDM music has a tempo of 120 beats per minute which is 1 beat every half second or 500ms, you want the first beat to decay down to the noise floor before the second beat begins otherwise the second beat begins while the 1st is still decaying and heard which adds to the one-note bass effect.  But the bass decay time should be relative to its mids (see point below)
• a Bass Decay and "Warmth" is a ratio that considers how well the bass and midrange integrate.  It takes the average decay times of two bass octaves and divides it by 2 midrange octaves average values and should be between 1.1 - 1.45.  I wrote an article about it here:  https://www.thesilo.ca/combining-bass-loudness-decay-times-to-improve-stereo-quality/#google_vignette
• invest in both velocity (insulation filled) and pressure (membrane, diaphragm, Helm Holtz) type bass traps for best results

Keep going!!!