My GIK Pillar Trap Review - Page 4 - Home Theater Forum and Systems - HomeTheaterShack.com
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post #31 of 128 Old 02-10-09, 06:46 PM Thread Starter
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Re: My GIK Pillar Trap Review

Did you check on mineral wool today? I tried calling IIG but the message said they were not in the office.
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post #32 of 128 Old 02-10-09, 08:41 PM
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Re: My GIK Pillar Trap Review

Actually, I went to call and realized I don't have the contact info in my new phone. Going back through my files from last year to get the info.

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post #33 of 128 Old 02-11-09, 12:41 PM Thread Starter
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Re: My GIK Pillar Trap Review

I burned some custom ticks and beats to CD and I notice that placing absorption at the side walls in the middle corrects some coloration in the 80Hz area where it instead of sounding localizable from the front to the back of the room it sounds like it is more in phase. I notice that the 250Hz seems to reflect of my ceiling and bounce to the floors corners with some build up there. There is some higher pitched reverberation that seems to dominate on the right side of the room in the front, and the left side of the room in the back. This seems related to the second reflection points. If I were to address these problems, I wonder if adding standard R19 insulation in the back of the room would sound alright and less punchy.
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post #34 of 128 Old 02-11-09, 02:15 PM Thread Starter
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Re: My GIK Pillar Trap Review

Very interesting. I checked the reference material for which I had the problem with and placing some the 244's at the side walls midpoints the bass sound very even thoughout the room now but there is some deep sounding bass? from the left or right channels. It does not feel distracting that way. That has to be something with the 244's on the front wall. I think I just need some more 244's and I have listened to alot of material with them at each location, so I will go ahead and order a couple more pair of those for now unless anyone would suggest otherwise.
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post #35 of 128 Old 02-11-09, 05:37 PM
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Re: My GIK Pillar Trap Review

I don't have any experience with the 244s, so I cannot offer suggestions. As posted elsewhere, all of mine are Monsters. It seems that we both have done our share recently to keep GIK in business

I notice that your avatar lists media reviewer. Is that your profession? Is your room used in your business? I am an electrical engineer in nuclear power generating plant design. I always envisioned a career in electronics, but when I graduated from college in 1971, the space program was almost over and few electronics firms in the Southeast were hiring. So, power engineering pays the bills for the electronics addiction
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post #36 of 128 Old 02-11-09, 06:02 PM Thread Starter
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Re: My GIK Pillar Trap Review

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hjones4841 wrote: View Post
I don't have any experience with the 244s, so I cannot offer suggestions. As posted elsewhere, all of mine are Monsters. It seems that we both have done our share recently to keep GIK in business

I notice that your avatar lists media reviewer. Is that your profession? Is your room used in your business? I am an electrical engineer in nuclear power generating plant design. I always envisioned a career in electronics, but when I graduated from college in 1971, the space program was almost over and few electronics firms in the Southeast were hiring. So, power engineering pays the bills for the electronics addiction
Yes I review movies here over in the Media Review forum. If not I would be unemployed like the other 85% in my area during the winter months. Hopefully it will be a better season here at the lake than last summer when it had seemed to rain or storm just about every day. My grandfather always tinkered with electronics and gadgets and my great great grandfather had contributed to MGM for them to get started so it has always been a hobby of mine. It makes my other family members are very jealous when they come over. I recently took a trip up midwest and got THX certified. A couple summers ago I had inventation from the academy awards to review movies which I would have taken but my family wanted me to have a "normal" job. I might have to write them back to see if they are still interested or not some time.
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post #37 of 128 Old 02-11-09, 06:50 PM Thread Starter
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Re: My GIK Pillar Trap Review

I Ordered two Monster traps, but I will get some more 244's later this week. I could probobly get the insulation free.
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post #38 of 128 Old 02-11-09, 07:17 PM
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Re: My GIK Pillar Trap Review

I think you will be pleased with the performance. At least on paper, they are quite a bit more effective in the lower octaves than the 244s. Bryan indicated that stuffing some pink insulation behind them may improve absorption performance in the lowest bass. I haven't tried that yet.

There is about an inch or so gap at the back of the trap between the back of the material and the back edge of the frame. I suppose the intent is to provide that as an air space even if the trap is pushed against the wall. That may even be there on the 244s.

Something to remember is that GIK will make a custom size of any of their traps for a very nominal fee (I suppose as long as it is within the 24x48 standard). And if you buy more than one, the surcharge for the other custom ones of the same size is even less.
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post #39 of 128 Old 02-11-09, 07:48 PM Thread Starter
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Re: My GIK Pillar Trap Review

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hjones4841 wrote: View Post
I think you will be pleased with the performance. At least on paper, they are quite a bit more effective in the lower octaves than the 244s. Bryan indicated that stuffing some pink insulation behind them may improve absorption performance in the lowest bass. I haven't tried that yet.

There is about an inch or so gap at the back of the trap between the back of the material and the back edge of the frame. I suppose the intent is to provide that as an air space even if the trap is pushed against the wall. That may even be there on the 244s.

Something to remember is that GIK will make a custom size of any of their traps for a very nominal fee (I suppose as long as it is within the 24x48 standard). And if you buy more than one, the surcharge for the other custom ones of the same size is even less.
I thought about trying some insulation behind the 244's. It is also 1", 1" 1/4" I think actually. I could fit some pink behind it but I don't have much to spare at the moment. I was looking at the absorption coefficients yesterday of the 244 again and I saw the Monster and looking at them they seem to center right around the problem target frequency in my room. I kept putting them in the checkout, leaving awhile comming back, putting them back in. I'm glad those are ordered finally. I talked to Bryan before about custom sized traps for the small area on my stage, but the cost was out of my price range at the time. Those are still on file should I decide to do that, but with the new Pillar traps there they would be slightly smaller. I'm pretty sure the insulation on there does at least at decent enough amount of absorption.

I could see the Monsters helping above the 244's at the first reflection points or on the front wall. Since I can freely move the speakers I'm not sure I would benifit having them at the first reflection points. My speakers mostly are performers in the mid-bass area although they do go down to 28Hz. It's all these subwoofers in a concrete room that are so difficult. Having the subs at each walls midpoint is suppossed to loose around 12dB - 18dB that way, but I think that I did not loose near that much.
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post #40 of 128 Old 02-12-09, 12:24 AM Thread Starter
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Re: My GIK Pillar Trap Review

Replaced a tile on my ceiling with a panel, moved insulation from the front stage (except corners) to the rear of the room, placed left reflection point panels on the stage with the other 244's and took the other 2" panel at the top of the screen wall into the other room to at least maintain symmetry on the front wall. I lost a couple decibals of SPL and equalized to a lower target loosing some headroom but I'm not sure how much. I turned my subwoofer level up so that is nearly +4 higher than the mains. I probobly should just eq to 25Hz which I may do next time but I thought it might be interesting to equalize some around the first room mode. This one is +-9dB. What is more important is what this sounds like.



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