[bpape]

That will work - though they're bigger than the Pillars. Also, if you want better performance, you'll want them taller than 18"

Bryan

 

[bpape]

I guess the point is that you'll want more than just the lower or upper corners depending on what else is in there besides the existing chunks.

After REW, you can look at where the peaks and nulls are and start looking at overlaps to dimensions of the room, dimensions from speaker to wall, seating to wall, etc.

You can also do a walkaround and listen for places where the bass seems overdone while playing the frequency where the peaks exist.

Bryan

 

[bpape]

You need to measure where you sit.

The first 2 measurements have the aberrations in basically the same place. If the sub was sitting in the same place front to back - just different left to right, then it could still be positional with the sub. Try the sub on either side but forward or back say a foot.

If no changes, then it's likely positional to your seating. Try with the mic a foot closer to the speakers.

Bryan

 

[bpape]

You can try the crawl. It may or may not help with a null. It's more for finding peaks like the one you have at approx 45hz.

As I said, try just taking measurements with the sub moved and/or the mic (seating) moved to prove what it's related to. Just remember to do only one at a time so you only have one variable.

Bryan

 

[bpape]

If you spend the time with placement, you can drastically reduce both peaks and nulls. In the 40's is tough and is generally best addressed via placement prior to treatment. To get into the 40's, you'll need 6" minimum.

Also, you can treat the corners all you want but if it's a modal issue based on width or length, the corners won't address it. It's likely the rear wall and that's what would need to be addressed.

If you can get to a point where you can cut the null in half or move it higher in frequency based on distance, you'll have an easier time.

Bryan

 

[bpape]

Potentially, yes. That's usually more of a plan to identify peaks. Remember that 2 'not too loud' waves coming off opposite surfaces can meet and cancel (nulls).

Again, have you tried moving the mic to see if it's positional to the seat?

Bryan

 

[bpape]

OK. If you can fix one problem with placement without hurting anything else, that's a good start.

Bryan