Just found out the other day. I’m apparently spreading vicious lies.

First-time commenter “Mike C” wrote (in response to my “Intro to Acoustic Treatment” video):

“this is the second room treatment video I’ve watched today and I refuse to let these lies continue…both were pushing products from their sponsors. sadly, that foam doesn’t work. check out the numbers, they don’t lie…I’m sick of this misinformation all in the name of pushing products from a sponsor.”

So…am I a liar? Let’s take a looksy.

First, is Auralex a sponsor of HSC?

Yep. They gave me some acoustic treatment to review a few years ago.

BUT…I was already a customer long before that happened, and I like the products.

Second, does acoustic foam really “not work”?

It does work. And Mike’s right, the numbers don’t lie. If you look up the absorption coefficients for various Auralex foam products (which they provide for free on their website), you’ll see that foam does a great job of absorbing mid-to-high frequencies.

And their foam LENRD bass traps absorb effectively down to around 150-200 Hz.

Are there better absorbers out there, especially for the low to mid-range frequencies? Sure. Big, massive broad-band absorbers and bass traps would work even better.

But that doesn’t mean the foam panels “don’t work.”

(That’s like saying an $100 SM57 doesn’t work when compared to a $3,000 U87. They both work, but they behave differently and have different purposes.)

Whether you’re into foam, fiberglass panels, or a king-size mattress, just use what makes sense for you.

And it always helps if you have a deeper understanding of how sound waves travel around your room. You can get started here:


I put this class together with an acoustical engineer buddy of mine.

Good stuff…perhaps something to try out this weekend?

Either way, have a great one.

Joe “Big Fat Liar” Gilder