Trap suggestions? 120 Hz broad Q, 9" max depth

[DrFrankencopter]

I've got a few modes in my room that cluster between 100 and 140 Hz. With my desk in its required position for tracking I end up with a deep null at around 100 Hz, and a build up at 130 Hz. Lengthwise axial appears to be the dominant one here, but I plan on conducting more measurements this week.

Currently the rear wall of my studio is only partially treated. I've got a shallow diffusor on it, and a superchunk spanning the wall ceiling junction. If I needed to I could build a trap at most 9 inches deep across the whole wall (approx 11' x 8.5' one the door has been accounted for). I'd like to keep the back of the room more 'live' so I'd prefer not to stick a broadband treatment on that wall.

So, considering the problem zone, and the need for damping to be limited to the low frequencies, what sort of trap designs should I be looking at? Slat resonators? Panel? Perforated?

Any input would be welcomed...

Cheers,

Kris

[avare]

Originally Posted by DrFrankencopter

I've got a few modes in my room that cluster between 100 and 140 Hz. With my desk in its required position for tracking I end up with a deep null at around 100 Hz, and a build up at 130 Hz. Lengthwise axial appears to be the dominant one here, but I plan on conducting more measurements this week.

Currently the rear wall of my studio is only partially treated. I've got a shallow diffusor on it, and a superchunk spanning the wall ceiling junction. If I needed to I could build a trap at most 9 inches deep across the whole wall (approx 11' x 8.5' one the door has been accounted for). I'd like to keep the back of the room more 'live' so I'd prefer not to stick a broadband treatment on that wall.

So, considering the problem zone, and the need for damping to be limited to the low frequencies, what sort of trap designs should I be looking at? Slat resonators? Panel? Perforated?

From what you have written, panel.

Andre

[DrFrankencopter]

Interesting...what is it in particular about my application that has you suggesting panel traps? In my mind I was thinking that slats were probably the way to go.

Cheers

Kris