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Kit placement

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Posted on November 26, 2016 at 06:05:05
timm
Audiophile

Posts: 780
Location: Ann Arbor Mi
Joined: January 15, 2008
 Hi all
As I have my 17x30 room built I am starting to look at electrical. Putting in two twenty amp circuits. Now the speakers will be 10' from front wall of a 17' wide room. Seated position will be approx 10' from speakers. Any suggestions on where to but the kit?? I have low (about 2.5' height) spiked stands. Just trying to figure where to put it all given the distances.

 

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RE: Kit placement, posted on November 26, 2016 at 10:06:25
Satie
Audiophile

Posts: 5426
Joined: July 6, 2002
 I like having access so I have the racks 3' from the front wall - which makes for some unwanted early reflections. I am regretting having moved them from the sidewalls for the experimentation period. However, I would not mind having them in the middle of the room in the plane of the speakers. .

 

RE: Kit placement, posted on November 26, 2016 at 11:02:24
timm
Audiophile

Posts: 780
Location: Ann Arbor Mi
Joined: January 15, 2008
 So maybe a stupid question. If I had it on the side wall behind the speaker - wouldn't that also create unwanted reflection? Toe in essentially pushes the back wave in that general direction?

Also - since I am more familiar with absorption... for diffusion - what creates reflection vs diffusion??

 

RE: Kit placement, posted on November 26, 2016 at 15:12:55
Satie
Audiophile

Posts: 5426
Joined: July 6, 2002
 The sidewall placement of the raccks behind the speaker will not reflect directly to the listening seat and will do so with a longer delay and attenuation. The center rack reflections come earlier than any others and with stronger amplitude and do so from the center where they can move the center image out of position.

Reflection is off of a plane (like the fronts of the equipment in the stand., diffusion is a breakup into multiple small reflections with added delay.

 

RE: Kit placement, posted on November 26, 2016 at 16:48:59
timm
Audiophile

Posts: 780
Location: Ann Arbor Mi
Joined: January 15, 2008
 Ahh that makes sense. Appreciate the explanation

 

RE: Kit placement, posted on November 27, 2016 at 02:45:25
Beluga
Audiophile

Posts: 346
Joined: October 8, 2001
 In a small room first reflection control is essential, as well as not overdamping the room.

I don't know if this will work for you but I have very positive experience with room lenses, on the sides (breaks up front first reflections), behind each speaker (breaks up rear reflections) and between speakers in the rear of the room (breaks up standing waves). You can adjust the width and depth of the soundstage by adjusting the angle and moving the lenses back and forth. Warning: VERY low WAF!

See pictures here:
http://www.stereotimes.com/images/RoomLenses.jpg
http://www.6moons.com/audioreviews/roomlens/big.jpg (sorry wrong speakers :))
Review:
http://www.6moons.com/audioreviews/roomlens/roomlens.html

I made DIY-sets from wooden base and pvc tubes, real simple :)

Good luck!
---

In Our Ears We Trust!

All is relative ...

 

RE: Kit placement, posted on November 27, 2016 at 06:23:13
Green Lantern
Audiophile

Posts: 16952
Location: San Diego, Ca
Joined: November 12, 2002
Contributor
  Since: June 17, 2003
 Is the room for the Odyssey's? I'm sooo envious of a room that size! Keep us updated please ; )









 

RE: Kit placement, posted on November 27, 2016 at 06:57:45
timm
Audiophile

Posts: 780
Location: Ann Arbor Mi
Joined: January 15, 2008
 Well. I have a ton of 2x4 ends about 2' long. I was planning on making some of those diffusers with them with the differing heights. There are a lot of maps online for the depths etc. anyone have any experience with these and how large until it just becomes too heavy?

 

RE: Kit placement, posted on November 27, 2016 at 06:59:42
timm
Audiophile

Posts: 780
Location: Ann Arbor Mi
Joined: January 15, 2008
 Well yes initially. But I have been ogling the 20.7 for a long time. :).

 

RE: Kit placement, posted on November 29, 2016 at 10:39:17
pictureguy
Audiophile

Posts: 22597
Location: SoCal
Joined: October 19, 2008
 How TALL is the room?
GL is right and I'M jealous of such a larger space. 10' ceiling or even slightly taller would be wonderful.

8' height is too close to 1/2 the width And 10' is 1/3 the length.
Not a perfect PHI room, but What the Heck? Nothing that can't be dealt with using a modest treatment program.
Too much is never enough

 

RE: Kit placement, posted on November 29, 2016 at 17:56:49
timm
Audiophile

Posts: 780
Location: Ann Arbor Mi
Joined: January 15, 2008
 I think I replied in my other thread. Room is 9' tall but suspended ceiling brings it to 8'. Using a ceiling tile called sandrift with a .75 coefficient ?? Does adding sound deadening material above the suspended ceiling help the acoustic or just stop sound from going upstairs.
Sorry. Repeated from other thread

 

RE: Kit placement, posted on November 29, 2016 at 18:04:45
pictureguy
Audiophile

Posts: 22597
Location: SoCal
Joined: October 19, 2008
 Such absorption numbers are generally not across a WIDE frequency range. And can be downright poor below maybe 300hz, which is where bass traps and such come into play.

Keeping sound from going 'upstairs' is a good idea, isn't it? It should help the sound in the intended space, too, by keeping reflection down?
Maybe somebody else knows?
Too much is never enough

 

RE: Kit placement, posted on November 29, 2016 at 18:14:51
timm
Audiophile

Posts: 780
Location: Ann Arbor Mi
Joined: January 15, 2008
 Haha. Yes it is a good idea. Just wondering if I need it and impact to overall sound. It isn't cheap. :)

 

RE: Kit placement, posted on November 29, 2016 at 19:07:26
pictureguy
Audiophile

Posts: 22597
Location: SoCal
Joined: October 19, 2008
 Go Big or Go Home!
Gonna be in the house for a while?
Besides, when it comes to projects like this, Compromise is for Wimps.
Too much is never enough

 

RE: Kit placement, posted on November 29, 2016 at 19:29:50
timm
Audiophile

Posts: 780
Location: Ann Arbor Mi
Joined: January 15, 2008
 Haha. You are right !!! :)

 

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