Bass Trapping Inquiry

[(chuckie)]

I have built 2 x 8 foot high tube traps.
They are placed in the corners of the front wall, in front of me, behind my mix desk. I am using Yorkville's YSM1p's.

They made a difference initially and i was happy with the balance of sound i was getting at my mix position.

Now, i have 'upgraded' to a smaller desk to get some more room for my gear rack, and also have chosen to move my monitors in closer > < now my equilateral triangle is smaller, and i dont have to sit back as far, which i thought was a better idea.

Now i run into some bass problems which make me un happy. At my mix position im in a big lack of bass, if i stand up at my mix position so my ears are above the speakers, i get a nice bass response, if i move to the back of the room , very sweet bass response, and of course the back corners. I seem to have MORE bass higher in the room, (top corners, near the ceiling) rather than in the lower corners/floor end.

Could someone throw me a few suggestions, maybe theres some science behind this? should the bass traps be in the back corners? have i trapped TOO MUCH bass?

Thanks in advance.

 

[mixsit]

Sounds like you have the natural areas of node pile-up and cancellations that any room has going on.
Wayne

 

[Ethan Winer]

Chuckie,

> At my mix position im in a big lack of bass ... if i move to the back of the room, very sweet bass response <

This is typical. Note that the back of the room may have more bass, but it's no more accurate than what you're getting at the mix position. In truth, the entire low end in your room is riddled with many peaks and deep nulls. Where you are in the room determines the "fullness" of the sound, but only because you're out of a null at some low frequency, or in a peak for another.

> maybe theres some science behind this? should the bass traps be in the back corners? have i trapped TOO MUCH bass? <

Yes, there's plenty of science, and none of it is complicated. You simply need more bass traps, and probably better ones than what you have now. How large (diameter) are the tubes you built, and what are they made of? I'm sure you need more traps in the rear corners as well as in the front corners. And probably even more than that. As far as I know it's not possible to have too much bass trapping. As you add more and more traps, the low end becomes flatter and tighter sounding. Though it's definitely possible to have too much absorption at mid and high frequencies, so you need to avoid that.

You'll find a lot of useful information on my company's web site, linked under my name below.

--Ethan

 

[(chuckie)]

hey, they are 12" in diameter
stuffed with R13.5 insulation

i have not found any 703 anywhere...

so its hard for me to buy things that will bass trap. maybe i should look into getting someone to build me the panel traps i think you display on your site...