2. misc-audio
  3. 1074739543

Need help with acoustic treatment for brightness.

I have switched back to my Forte Model 40 preamp (Pass designed). I like it for it's fantastic detail. However it has given my system a mild brightness issue at around 5000Hz. I have read that absorptive material at the first reflection point can help tame this. In my case, the primary first reflection point is on the ceiling so the solution is not as simple as hanging a rug on the wall. My budget is about $100 so DIY is most likely. John Marks of Stereophile uses RPG Skyline diffusors on the ceiling for his speakers. Could diffusion tame brightness? If not, Is absorption the key? I've used a lot of interconnects and that doesn't solve it.
holzhauer

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holzhauer OP
201 posts
 
Rives- you are way cool. To offer free advice when you do this professionally is more than generous. I did use your test cd with the Radio Shack spl meter to record the 5000hz. So I guess I gave ya a little business. I suppose I should lean towards the diffusion as my room is pretty dead already. Unfortunately the diffusion option seems likely more expensive than absorption.
Prpixel- thanks for the construction plan. It's nice to know some of these tasks can be solved with some sweat equity.
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