GIK TriTraps - will they help this response? - AVS Forum
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post #1 of 11 Old 08-06-2014, 12:18 PM - Thread Starter
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GIK TriTraps - will they help this response?

Thinking of getting some GIK Tri-Traps to go in the back of my living room, here:



Think they would do anything at all to my 60hz null?



Same null, post-Audyssey:

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post #2 of 11 Old 08-06-2014, 02:19 PM
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Quote:
Originally Posted by Alan P View Post
Thinking of getting some GIK Tri-Traps to go in the back of my living room
Think they would do anything at all to my 60hz null?
Probably not. A null is caused by a reflected wave meeting the original wave 180 degrees out of phase at the point where the null is measured. 180 degrees out of phase is 1/2 wavelength, so there's likely a 1/4 wavelength distance either between the source and a boundary or between the LP and a boundary. 1/4 wavelength at 60Hz. is 4.7 feet. It's that distance you should be searching out with respect to the mic and/or sub position relative to the walls.

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post #3 of 11 Old 08-06-2014, 03:32 PM - Thread Starter
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Thanks Bill, that's what I thought would probably be the answer.

Let me ask you this; I used to have my living room set up in the config below. However, this was before I had 4 PSA subs to try to integrate. If I put it back this way, with the 2 subs by the TV as-is, and the 2 additional subs in the corners to either side of the MLP, do you see any major issues? Any thoughts on where the 4 subs would be best located in this config??

It's a lot of work to switch it back, but if it's going to net better bass I'm willing to give it a go. I know it provides better imaging from the KHorns. The only reason I changed it was WAF anyways.

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post #4 of 11 Old 08-06-2014, 04:02 PM
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Quote:
Originally Posted by Bill Fitzmaurice View Post
Probably not. A null is caused by a reflected wave meeting the original wave 180 degrees out of phase at the point where the null is measured. 180 degrees out of phase is 1/2 wavelength, so there's likely a 1/4 wavelength distance either between the source and a boundary or between the LP and a boundary. 1/4 wavelength at 60Hz. is 4.7 feet. It's that distance you should be searching out with respect to the mic and/or sub position relative to the walls.
Agreed!
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post #5 of 11 Old 08-06-2014, 04:19 PM
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Here's a quick depiction. I used ms paint to make the changes so I was limited. Angle the chairs in at 45 degree s.
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post #6 of 11 Old 08-06-2014, 04:30 PM - Thread Starter
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Good ideas there Garidy! I don't think the second one would fly with the wife, but the first one probably will. However, I do love my recliner and would be sad if it wasn't the MLP.

Are these pics just to demonstrate how to be in the correct position for the KHorns? Or, are these somehow related to bass as well??
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post #7 of 11 Old 08-06-2014, 04:57 PM
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Quote:
Originally Posted by Alan P View Post
Thanks Bill, that's what I thought would probably be the answer.

Let me ask you this; I used to have my living room set up in the config below. However, this was before I had 4 PSA subs to try to integrate. If I put it back this way, with the 2 subs by the TV as-is, and the 2 additional subs in the corners to either side of the MLP, do you see any major issues? Any thoughts on where the 4 subs would be best located in this config??

It's a lot of work to switch it back, but if it's going to net better bass I'm willing to give it a go. I know it provides better imaging from the KHorns. The only reason I changed it was WAF anyways.

That arrangement looks better mainly because the LP is much further away from the rear wall. BTW, where are you crossing at? With KHorns I'd almost think no higher than 50Hz.

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post #8 of 11 Old 08-06-2014, 05:34 PM
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Quote:
Originally Posted by Alan P View Post
Good ideas there Garidy! I don't think the second one would fly with the wife, but the first one probably will. However, I do love my recliner and would be sad if it wasn't the MLP.

Are these pics just to demonstrate how to be in the correct position for the KHorns? Or, are these somehow related to bass as well??

Just some rule of thumb stuff that's aimed providing a reasonable experience for all and not just the one super sweet spot...
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post #9 of 11 Old 08-06-2014, 09:04 PM - Thread Starter
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Quote:
Originally Posted by Bill Fitzmaurice View Post
That arrangement looks better mainly because the LP is much further away from the rear wall. BTW, where are you crossing at? With KHorns I'd almost think no higher than 50Hz.
Currently crossed at 80hz...but I'm sure if I do the different setup and have 2 good corners it will help my KHorns bass response immensely.
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post #10 of 11 Old 08-08-2014, 08:11 PM
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Alan, I was almost about to buy some tri-corner bass traps for my room until I started to do a little research and realized that the really won't do much for low bass.
Then I was pointed in the direction of this thread.
http://www.gearslutz.com/board/bass-...absorbers.html


The company that I'm getting some acoustical panels from is going to attempt to build some of these limp mass bass absorbers that I will probably end up trying.
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post #11 of 11 Old 08-08-2014, 08:42 PM - Thread Starter
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Thanks jbrown, but as you might guess from my response in that DIY thread, the point may be moot.

If i reorient the furniture (where I expect to get a much better response), I'll have even more room for Stonehenges!
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