 Sub-woofer placement
|
Joined: Feb 2007
Posts: 84
old hand
|
OP
old hand
Joined: Feb 2007
Posts: 84 |
I've been reading Clint DeBoer's review of the Epic 80 system on audioholics.com and he talked about "crawling around on all fours" to locate the sweet spot for the sub. What does this entail? And is it really that hard to place a sub-woofer? I know room geometry matters, but I have a 12x22x8 room and I'm looking at buying the 350.Thans Mark
M22v3;VP150;QS8;Hsu VTF3-MK4 sub
|
|
|
Re: Sub-woofer placement
|
Joined: Jul 2002
Posts: 1,343
connoisseur
|
|
connoisseur
Joined: Jul 2002
Posts: 1,343 |
getting to 2,000 posts; one year at a time vp160/qs8/qs4/ep350/m60/m2200s
|
|
|
Re: Sub-woofer placement
|
Joined: May 2002
Posts: 1,177
connoisseur
|
|
connoisseur
Joined: May 2002
Posts: 1,177 |
Welcome Mark.
As you guessed, the room dimensions should not be evenly divisible. I see that you are 12x22x8. That could pose some problems, and you most likely will have to do some acoustical treatments.
Shawn
Epic 80/600 + M3's + M3 Algonquins + M2 Computer + EP125
I think I'm developing an addiction.
|
|
|
Re: Sub-woofer placement
|
Joined: Feb 2007
Posts: 84
old hand
|
|
OP
old hand
Joined: Feb 2007
Posts: 84 |
I read the article (I should have looked there first) and it does answer my questions. Thanks for pointing me there. I'm confused about the dimensions not being evenly devisable?? Is this a "rule-of-thumb" or some hidden mystical code held closely between audiophiles like the secrets of the mason's?
M22v3;VP150;QS8;Hsu VTF3-MK4 sub
|
|
|
Re: Sub-woofer placement
|
Joined: Jan 2004
Posts: 13,840 Likes: 13
shareholder in the making
|
|
shareholder in the making
Joined: Jan 2004
Posts: 13,840 Likes: 13 |
12ft x 12ft x 12ft is not good 24ft x 12ft x 6ft is not good 22ft x 12ft x 8ft YOUR room, I don't think you will have to many problems, unless you have bare walls. 
M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85
|
|
|
Re: Sub-woofer placement
|
Joined: May 2002
Posts: 1,177
connoisseur
|
|
connoisseur
Joined: May 2002
Posts: 1,177 |
Normally, we don't give this info out until you've been officially indoctrinated into the society, but you seem like a nice guy..... Ok, think of a beer case, eh. Now as you know, the beers are arranged 4 abreast and 6 long. 6 times 4 is 24 - no problem. In fact, its a beauty. But 6 divided by 4 is 1.5. Any beer drinker knows that it is physically impossible to drink 1.5 beer. No bout a doubt it, you are going to drink the full 2 beer, eh. That leaves you with 22 beer. (Unless your buddy Blair is over, then there would be 20) Now, 20 divided by 6 is 3.3. Do you see the patern taking shape here? There is no easy solution but to drink the whole box, bye. And that's were the problem lies, eh. So there you go. Now you understand why the room dimensions are so important. Actually, it has to do with the wavelengths of certain frequencies. Quote:
If the wavelength of a particular note happens to be the same, or an even fraction (1/2, 1/3, ¼, etc.) as one of the room’s dimensions, there’ll be a standing wave created. Standing waves cause certain frequencies to be accentuated at various locations in the room and reduced in others. Basically it can cause one seat in the room have great sound and another to have very poor sound.
In order to reduce the effects of standing waves, it is best to have the room follow certain dimensional ratios. (ratios of HxWxL). First of all, run & hide from a room that is a perfect cube. You should avoid rooms with any ratios that are perfect multiples of each other. An example of a poor room would be a 15’ x 20’ room with a 10’ ceiling. Some good ratios are 1 x 1.3 x 1.7 or 1 x 1.3 x 1.9 or .9 x 1.3 x 1.6. It is easier to work with a rectangular room because the good speaker and seating locations are easier to predict.
Shawn
Epic 80/600 + M3's + M3 Algonquins + M2 Computer + EP125
I think I'm developing an addiction.
|
|
|
Re: Sub-woofer placement
|
Joined: May 2002
Posts: 1,177
connoisseur
|
|
connoisseur
Joined: May 2002
Posts: 1,177 |
Quote:
12ft x 12ft x 12ft is not good
24ft x 12ft x 6ft is not good
22ft x 12ft x 8ft YOUR room, I don't think you will have to many problems, unless you have bare walls.
See, there you go. I was reading 12x22, but my brain kept thinking 12x24. I should just stop posting today, and go to bed. 
Shawn
Epic 80/600 + M3's + M3 Algonquins + M2 Computer + EP125
I think I'm developing an addiction.
|
|
|
Re: Sub-woofer placement
|
Joined: Sep 2004
Posts: 11,458
shareholder in the making
|
|
shareholder in the making
Joined: Sep 2004
Posts: 11,458 |
Quote:
Ok, think of a beer case, eh.
::::::: No disrespect to Axiom, but my favorite woofer is my yellow lab :::::::
|
|
|
Re: Sub-woofer placement
|
Joined: Feb 2004
Posts: 2,854
connoisseur
|
|
connoisseur
Joined: Feb 2004
Posts: 2,854 |
I am getting absolutely NO LFE from my beer (well, maybe a little bit the next day ). The bigger disappointment is that my subwoofer doesn't dispense beer.
|
|
|
Re: Sub-woofer placement
|
Joined: Feb 2007
Posts: 84
old hand
|
|
OP
old hand
Joined: Feb 2007
Posts: 84 |
wow.. who ever knew listing to music or movies was so complicated. I guess that's why a bottle of Johnnie Walker is rectangular - better acoustics when the scotch hits the ice and slides into the glass like my hands over the curves of a womans great pair of hips .... oh, was that out loud??
Last edited by agentfox1942; 02/22/07 09:52 PM.
M22v3;VP150;QS8;Hsu VTF3-MK4 sub
|
|
|
|
Forums16
Topics24,943
Posts442,465
Members15,617
| |
Most Online2,082
Jan 22nd, 2020
|
|
|
0 members (),
667
guests, and
4
robots. |
|
Key:
Admin,
Global Mod,
Mod
|
|
|
|
