half-size bass trap?? (24"x24")

[jimmieee]

Due to space issue, I'm planning to build two 24"x24" panels instead of one 48"x24" which is quite common.

Is that gonna work? Since the two half-size panels won't be mounted together, will the low frequency absorption efficiency drop dramatically?

Sorry I'm totally new to bass traps, really need help thanks.

[Ethan Winer]

What matters is the total corner surface you cover. I can tell you now that two 2x2 bass traps are not enough for any room. But what about wall-ceiling and wall-floor corners?

--Ethan

[jimmieee]

Thanks Ethan! In fact I'm thinking about 4 sets of them (8 of 24"x24" panels) at all 4 corners. But what about position? Wall-ceiling + wall-floor with the middle clean? Or just place them where usual 24"x 48" would fit (plus a mini palm plant below)?

Another problem.. I decided to use rockwool but have no experiences cutting it.
What density works better?? I can only find Roxul's Curtain Rock 80 (rigid, 6.5 lb/ft3) and SAFE (not SAFE n' SOUND, semi-rigid, 4.5 lb/ft3), which one to go??

Many, many, and many thanks!!

[Ethan Winer]

Most of this is explained in my Acoustics FAQ. Again, you treat as much corner surface as possible. That, and the reflection points on the side walls and ceiling.

--Ethan

[jbjoubaud]

Since there's a half in the tittle I though I'd use it instead of making a new one.. (you'll see my point with the half thing in the last sentance btw)

I'm about to make myself some broadband absorber with some roxul safe n sound (yes I'm on a really tight budget) Roxul - Roxul Safe'n'Sound for wood studs 24 In. on centre - 250002 - Home Depot Canada
I'm renting right now and the room is fairly large (maybe 20'x30') but I'll be moving in 3 or 4 months. So I want a basic kit that I can compliment later.
I'll be starting a projet next week and I won't do this one in a room with no treatment at all.

Would you say I'd be better off with 8 pannel 3" thick or 4 pannel 6" thick. (I've read that 4" is the way to go but safe n' sound doesn't come this way).

Thanks in advance

[Ethan Winer]

Originally Posted by jbjoubaud

Would you say I'd be better off with 8 pannel 3" thick or 4 pannel 6" thick.

Having more panels that are thinner is definitely better. Proof here:

Density Report

--Ethan

[jbjoubaud]

Thanks Ethan for being so helpful to diyers, it's very much appreciated !

[jimmieee]

yeah i almost forgot to thank you!! Ethan

without your experience sharing i might have gone to AurOOOx's stuff.thumbsup