Should I Order 2-inch or 4-inch Acoustic Panels?
Q: Should I order the 2-inch or the 4-inch panels?
A: Depends on your needs, both have their purpose. As far as reverb, ringing, reflections, and sounds above 500Hz 2 inch and 4 inch panels perform exactly. If your room is sonically perfect on the low end then you can get by with just 2 inch acoustic panels. OK, back to reality… 99% of the time you will also need low end absorption and 4 inch panels (also known as bass traps) provide 4 times better than 2 inch panels at 125Hz.
https://acousticsoundpanels.com/collections/acoustic-sound-panels
