free hanging bass traps

Posted: Tue Apr 08, 2003 7:10 am

hello Ethan or anyone else, I am going to build the Deep bass trap but instead of it being permanently mounted to the ceiling or wall I want it to be it's own box that can be hung or moved around as needed. my question is what should the back panel material be? If the front face is 1/4" ply, should that be duplicated for the back face or does it need to be a more rigid thicker material? (like a wall)

Posted: Tue Apr 08, 2003 7:35 am

I know that this was discussed in a previous post, unfortunately I can’t find that post. If I remember correctly. Eathan stated that the back panel needs to be very stiff and that he recommended 3/4 inch plywood.

Posted: Tue Apr 08, 2003 7:40 am

Aro,

> I am going to build the Deep bass trap <

First, just to be clear, you need more than one trap. You also need to make both the low-bass and high-bass types.

> If the front face is 1/4" ply, should that be duplicated for the back face <

No, as Johnny said you have to make it much heavier, since the back is substituting for a wall.

--Ethan

Posted: Tue Apr 08, 2003 9:48 am

Given the choice for backing, would 3/4" drywall or plywood be better? (I imagine whichever is denser/heavier.)

Posted: Tue Apr 08, 2003 9:56 am

Brian,

> I imagine whichever is denser/heavier. <

Right, and less likely to flex.

--Ethan

Posted: Tue Apr 08, 2003 12:06 pm

thanks for the replies. Here's a question: can the bass traps, done properly, have any perceived difference in the bass response as it is transmitted outside of the room that the traps are in? in other words can bass traps within a room subdue bass transmitting into adjacent rooms?

Posted: Tue Apr 08, 2003 12:37 pm

Don't use drywall if you plan on moving them around, I would think particle board for the cheaper option or plywood for the more expensive.

Eric

Posted: Tue Apr 08, 2003 12:49 pm

Aronaut,

Adding bass traps may give a tiny reduction in sound transmission, but it won't be more than a dB. or two.

--Ethan

This topic sponsored by: