Plywood floor as bass trap in basement studio?

jazzman · Post by **jazzman** » Mon Mar 10, 2003 1:38 pm

John, thanks so much for sharing all this information with us.

My question is how well does a plywood or MDF floor resting on spacers on a basement slab work as a bass absorber? If I'm reading Everest's formula for diaphragmatic absorbers correctly, it looks like 5/8" plywood sheets (figuring 2 pounds per square foot) just 3/4 inches off the floor should soak up a lot of bass at right around 139 Hz, which has a wavelength of about 8 feet, the standard basement ceiling height. How effective is it to use such a floor as a bass trap, in your experience?

Post by **John Sayers** » Tue Mar 11, 2003 7:28 am

using the same formula a standard drywall/stud structure is a low frequency panel absorber. Your floor will act the same but it will all be at 139Hz - broadband absorption is what you are after but it will work.

cheers
john