Weird live room shape....acoustics Q

kats · 9th January 2007, 07:44 PM

Hi guys, just thinking aloud here. I won't have this room until March. My question is about the corners and bass trapping. As you can see in the pics, there are corners within corners

. Ya think I'm gonna have to trap the whole thing, or just the corners that reflect back to the main room?

Heres a rough sketch:

tINY · 10th January 2007, 09:02 AM

That's a big enough room that bass trapping won't be needed.

Make sure you don't set up too close to a wall and watch out for focused echos (flutters and slap-back).

-tINY

bpape · 10th January 2007, 03:05 PM

I would respectfully disagree. Those 'corners' will act like little rooms in and of themselves. You'll get all kinds of buildup and boost from the 18' dimensions and it will be coming back at you equally from all 4 corners of the room.

Also, the 24' width is narrow enough to still produce some modal issues that should be addressed.

I will agree that the room volume is large enough that it's better to treat it as a large space rather than the typical small space in terms of a treatment plan in general.

Bryan

kats · 10th January 2007, 04:58 PM

Anyhow, for sure we're getting an acoustician in here to get it right. But that won't be for a month....so I'm just wondering what the obvious is gonna be.

Fer sure a couple of those coves are screaming "ISO BOOTHS"..... we'll see how it shapes up. The other two coves scream "POOL TABLE" & "FULLY STOCKED BAR"

.... not joking

Cornvalley · 10th January 2007, 05:11 PM

Get a second acoustician to you give opinions to the 1st acousticians 'sound' philosophy. You might be suprised.

Ethan Winer · 10th January 2007, 05:29 PM

Quote:

Originally Posted by kats

Ya think I'm gonna have to trap the whole thing, or just the corners that reflect back to the main room?

A room like that doesn't need bass trapping for the same reason as small rooms do, but you still need plenty of broadband absorption. In this case it's more about bringing down the overall reverb time than curing narrow peaks and nulls and modal ringing at only certain frequencies. You also want the absorption to be as "thick" as possible so it's effective to low frequencies. Fluffy fiberglass 18 inches thick will do a great job.

Or buy 100 commercial bass traps.

--Ethan

tINY · 10th January 2007, 08:46 PM

I'd get the pool table and bar in before doing too much about the acoustics. Though you may want to think about how you set up those corners and how that will effect the acoustics.

A bit of art deco styling can do a lot to break up standing waves and focusing.

-tINY

kats · 11th January 2007, 01:40 AM

The neat thing about the room is that it's an old bank - about 100 years old. The architecture and finishing is quite remarkable. I'll post some pics once I start digging in.

rainsinvelvet · 11th January 2007, 03:02 AM

please do. Pictures are always cool

ERic

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9th January 2007, 07:44 PM	#1
kats Lives for gear Join Date: May 2005 Posts: 2,348	Weird live room shape....acoustics Q Hi guys, just thinking aloud here. I won't have this room until March. My question is about the corners and bass trapping. As you can see in the pics, there are corners within corners. Ya think I'm gonna have to trap the whole thing, or just the corners that reflect back to the main room? Heres a rough sketch:

10th January 2007, 03:05 PM	#3
bpape Gear addict Join Date: Jul 2005 Location: St. Louis(Wildwood), MO Posts: 435	I would respectfully disagree. Those 'corners' will act like little rooms in and of themselves. You'll get all kinds of buildup and boost from the 18' dimensions and it will be coming back at you equally from all 4 corners of the room. Also, the 24' width is narrow enough to still produce some modal issues that should be addressed. I will agree that the room volume is large enough that it's better to treat it as a large space rather than the typical small space in terms of a treatment plan in general. Bryan __________________ I am serious, and don't call me Shirley Bryan Pape Lead Acoustical Designer GIK Acoustics

11th January 2007, 03:02 AM	#9
rainsinvelvet Lives for gear Join Date: Sep 2003 Location: California Posts: 1,030	please do. Pictures are always cool ERic __________________ http://www.thesleepoverdisaster.com (my Band) http://www.myspace.com/thesleepoverdisaster It is a very mixed blessing to be brought back from the dead. Kurt Vonnegut

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10th January 2007, 09:02 AM	#2
tINY Lives for gear Join Date: Jul 2004 Location: Orygun Posts: 5,838	That's a big enough room that bass trapping won't be needed. Make sure you don't set up too close to a wall and watch out for focused echos (flutters and slap-back). -tINY

10th January 2007, 04:58 PM	#4
kats Lives for gear Join Date: May 2005 Posts: 2,348	Anyhow, for sure we're getting an acoustician in here to get it right. But that won't be for a month....so I'm just wondering what the obvious is gonna be. Fer sure a couple of those coves are screaming "ISO BOOTHS"..... we'll see how it shapes up. The other two coves scream "POOL TABLE" & "FULLY STOCKED BAR" .... not joking

10th January 2007, 05:11 PM	#5
Cornvalley Gear addict Join Date: Jul 2002 Location: Woodland Hiils, CA Posts: 344	Get a second acoustician to you give opinions to the 1st acousticians 'sound' philosophy. You might be suprised.

10th January 2007, 08:46 PM	#7
tINY Lives for gear Join Date: Jul 2004 Location: Orygun Posts: 5,838	I'd get the pool table and bar in before doing too much about the acoustics. Though you may want to think about how you set up those corners and how that will effect the acoustics. A bit of art deco styling can do a lot to break up standing waves and focusing. -tINY

11th January 2007, 01:40 AM	#8
kats Lives for gear Join Date: May 2005 Posts: 2,348	The neat thing about the room is that it's an old bank - about 100 years old. The architecture and finishing is quite remarkable. I'll post some pics once I start digging in.