I think I need more bass traps, where to place them??


Hi guys, I already have bass traps in all four corners of my room but I still have some pretty bad room modes resulting in big peaks at 60/120hz and dips at 80/160hz.

I spent hours and days messing around with speaker placement and my current setup is the best I can do in terms of matching my target room response curve aside from these modes.

So my question is...I assume I need more bass traps?  If so, what is next logical position for them?  Sidewalls?  Front wall between the speakers or directly behind speakers?  Back wall?  If the answer is yes to all positions, then where should I start?  Due to financial restrictions I would like to treat one area at a time.

Thank you!
128x128tboooe

Showing 2 responses by geoffkait

It would help considerably if you located the standing waves and reflections in the room using a test tone on a CD or record and a sound pressure meter. Trying to find the ideal locations of multiple tube traps is a lot like trying to solve three simultaneous equations in four unknowns. As fate would have it oftentimes the standing wave one is attempting to address with a tube trap is not located directly in the room corner but say a foot or two away from the corner.
Tbooe wrote,

@geoffkait I am not sure I understand what you are suggesting. I measured my room response only from my listening position so isnt this where the wave is?

The wave at your listening position is determined to a large extent by the other waves in the room, waves like reflected waves, standing waves in room corners, standing waves anywhere in the 3D space. Waves interact. It's quite possible to be sitting right in the middle of a standing wave.