Question regarding diaphragmatic deep bass traps

Question regarding diaphragmatic deep bass traps Apr 22, 2016 20:53:22 GMT

Quote

Post by Ethan Winer on Apr 22, 2016 20:53:22 GMT

The trap tuning depends on the wood thickness (mass / weight really) and the depth of the sealed box. So 8 mm is about 0.31 inches versus 0.25 for the plywood specified, and the frequency will be shifted down the same proportion. Yes, you can use rock wool instead of rigid fiberglass.

As explained in bold print at the beginning of that article, I don't recommend this type of bass traps anymore:

Please understand that the bass traps described in this article are an older design intended mainly for larger rooms. For rooms smaller than 30 by 20 feet you'll do better with broadband bass traps made from thick rigid fiberglass placed in the room corners, with more on the front and rear walls if possible. Small rooms have peaks and nulls at all frequencies, so broadband absorption is better than the tuned traps shown in this article. This is described in my Acoustics FAQ linked above.

If you tell me the size of your room and, better, have a diagram or 1-2 photos, I can be more specific.

--Ethan

Question regarding diaphragmatic deep bass traps

Post by woodhouse on Apr 21, 2016 18:51:33 GMT

Post by Ethan Winer on Apr 22, 2016 20:53:22 GMT