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Major null at 250hz + other issues
Old 20th July 2016
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Major null at 250hz + other issues

I have a two-channel/theater listening room that is ~13'9" by 20'8" by 9'9". On the front wall/ceiling interface, I have ~20"x13" of fiberglass insulation. On each of the side walls, I have a pair of 2' x 4' 4" thick absorptive panels. I also have a couple 2" panels near the rear of room (still have some flutter echo issues).

I wasn't really digging the sound I was getting, but couldn't put my finger on it, although I know that it didn't sound quite as "alive" as I knew it should.

I measured the room last night (XTZ room analyzer pro). I am not sure what more I can do with the deep nulls at 40-50 (short of adding some subwoofers), but am far more concerned with the null at 250. If my math is right, it looks like it could be floor bounce interference. There is also a somewhat smaller peak at 500. Thoughts?

I am thinking of a tuned bass trap for the peak at 80ish.

I also am a bit concerned by the loss of high frequencies. I am wondering if I should cover the fiberglass in the front corner and/or replace some of the absorption with diffusion?

ANy thoughts on the effects of putting a lot of diffusion on front or rear wall?
Attached Thumbnails
Major null at 250hz + other issues-quinta_to-250.jpg   Major null at 250hz + other issues-quinta_fullrange.jpg  

Last edited by shaynet98; 20th July 2016 at 01:30 PM.. Reason: added attachments
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