I’d like to make a DIY bass traps to reduce dips around 80hz ~ 100hz in my room. Pre-made bass traps I found are very expensive, or don’t actually absorb low frequency sound much.
I recently learned that helmholtz resonator could absorb lower frequency only. Is it that simple as making a wooden box with many holes on one of 6 sides and some absorbers in it?
- Make a thin wooden box with 600mm height, 600mm width, and 100mm thickness. The thickness of the front panel is 15mm.
- Drill holes to the one of 6 sides of the box.
- Seal the box with silicone tape.
- Put absorber materials with 600mm width, 600mm height, 90mm thickness in the box.
I calculated absorber dimensions with this calculator. I just changed the absorber thickness to 90mm from 100mm. But is the 100mm thickness enough?
Even if could make a resonator successfully, do I need to make 8 panels or so to make meaningful changes to the room mode (since each panel is small)?
http://www.acousticmodelling.com/helmholtz.php
