#1647194 - 03/18/04 10:40 PM
Rooms that eat bass?
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Tedly Nightshade
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Registered: 01/03/02
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Loc: applegate,OR,UNITED STATES
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I have found at least one room that just gobbles bass- we took the monitors outside, changed nothing else, and there's all kinds of bass, real low stuff and even more mid-bass type of stuff, that you just can't hear in that room, without really exaggerating the bass with EQ or a massive subwoofer.
I wonder if my own room may be eating some bass.
Could bass traps be the answer to this?! Seems counterintuitive, but for all I know that could be.
Anything on how rooms that eat bass, eat bass, would be welcomed.
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#1647195 - 03/19/04 12:59 AM
Re: Rooms that eat bass?
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bdbklyn
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Registered: 04/04/01
Posts: 1035
Loc: Los Angeles,CA,UNITED STATES
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There are millions of rooms like that out there, probably every living room and bedroom in the world. Now, you'll say to yourself that you've been in plenty of living rooms that don't sound like they're gobbling up the low end, but they do. They don't do it all over the room and probably not where you're listening position is. Also, we cheat a little... we mount the speakers close to the floors and the couch is against another wall or in the last third of the room. By doing this we can mask the standing waves null points. In a cotrol room or mastering room (especially with 5.1) the listening postion in is the middle of the room.
This is exactly the worst listening positions imaginable. Also the speakers a usually half way between the floor and the ceiling and the same distance from the walls.
I've been in room where I can sweep an oscillator in one speaker up from
40Hz (and yes you CAN localize 40Hz...) and as you sweep up have the signal go dead center at all of your null points and then back to the speaker you're feeding once you pass the trouble spots.
bill
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#1647196 - 03/19/04 01:15 AM
Re: Rooms that eat bass?
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Topfloormix
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Registered: 03/16/04
Posts: 23
Loc: Earth !
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Hi Bil,
Also the speakers a usually half way between the floor and the ceiling and the same distance from the walls.
Is there any true, in the above?
Tx
Gino
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#1647197 - 03/19/04 02:29 PM
Re: Rooms that eat bass?
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Ethan Winer
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Registered: 06/12/00
Posts: 5470
Loc: New Milford, CT, USA
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Ted,
> Could bass traps be the answer to this?! <
Yes, exactly.
> Seems counterintuitive <
Not when you understand the cause of the problem!
All room acoustic problems are caused by reflections off the walls, floor, and ceiling. A lack of bass in a room is due to cancellations caused by these reflections.
Your speakers are as flat as their published response. The deviations you actually get in a room are caused by the reflections. Absorb the reflections and the problems ago away. Or they're at least reduced substantially.
--Ethan
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#1647198 - 03/19/04 08:03 PM
Re: Rooms that eat bass?
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skank
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Registered: 03/07/04
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nice reply ethan.
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#1647199 - 03/25/04 11:44 AM
Re: Rooms that eat bass?
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Tedly Nightshade
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Registered: 01/03/02
Posts: 4649
Loc: applegate,OR,UNITED STATES
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Makes perfect sense. Thanks!
_________________________
A WOP BOP A LU BOP, A LOP BAM BOOM!
"There is nothing I regret so much as my good behavior. What demon possessed me that I behaved so well?" -Henry David Thoreau
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#1647200 - 03/26/04 04:55 AM
Re: Rooms that eat bass?
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EarlBob Okum
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Registered: 08/23/01
Posts: 53
Loc: Hogwaller Hole, KIN-tucky
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Now Ah've heard o' people that eat bass. Trout, perch, and some bluegill too. But Ah never done heard of a ROOM that eats bass. Less'n o'course yer talkin' 'bout the Frahday naht fish frah down at the Pisgah Babtist Church. They's a room full 'o fish eatin' folks, they is.
Larn sump'n new everday.
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