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frequency spike at 200hz

Is there a way to figure out what areas or items to treat in a room to reduce a high amplitude high q peak? I have a peak centered on 200hz in excess of 12db! The peak starts at about 160hz and ceases at about 300hz. I have not been able to find a room placement that is livable that will reduce the peak below this point. I currently have 9 inch tube traps in the corners behind the speakers plus two more on order from ASC, and corner tunes at all the ceiling/wall interfaces. I am currently using an equalizer to flatten the peak but I would prefer to eliminate or reduce it as much as possible through room acoustics. My old speakers did not exhibit this trait (a 4db bump from 180-220hz). The N802's are ported and the ESP's are sealed. Is this simply a sealed box reaction to this room? I had a pair of transmission line speakers that also exhibited the 200 hz bump.

Also, what would be recommended for a high quality parametric equalizer? I am not thrilled with the digital eq from the Copland DRC205 and my ancient Audio Control is just a graphic eq and doesn't provide the precision that is really necessary.
rhljazz

Showing 1 response by ngjockey

ngjockey
1,042 posts
 
Whether ported or sealed should not make much difference in this case.

You did your homework and I wish I had a better answer than this: Location, location, location. Anything else just doesn't jibe with the info you've given. Have you tried them diagonally to the room?

I've even read up on the ESP's to see if they have the "Wilson" equalization. That doesn't seem the case. They are a bit unusual with the angled baffle and the side tweeter and I read they are difficult for placement Also read that the spikes are near mandatory. The room is a bit unusual too but the N802's handled it. Just curious about that soffit, I've had closed closets resonate according to their internal volume.
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