GIK Acoustics DIY Acoustical Panel Build Thread - Page 4 - Home Theater Forum and Systems - HomeTheaterShack.com

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post #31 of 35 Old 11-30-16, 10:34 PM
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Re: GIK Acoustics DIY Acoustical Panel Build Thread

Wow, very interesting AudioCraver, thank you so much for sharing. It makes me want to get off my behind and do the same thing.


Good Listening

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post #32 of 35 Old 12-01-16, 01:18 PM Thread Starter
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Re: GIK Acoustics DIY Acoustical Panel Build Thread

Quote:
ellisr63 wrote: View Post
Funny that you mention that as I was just talking with a friend of mine earlier today, and we both agree that the front wall placement of acoustic panels made a bigger improvement in getting our setups sounding right than the first reflection panels did. In my friends setup he is listening in nearfield vs my 12' MLP.
Early reflections are your enemy, unless they are your friend.

If they
  • arrive from the same pan location as the direct wave (left-to-right pan), not significantly outside of or inside of the L & R speaker listening angle
  • arrive at the same delay time within a few microseconds vs the direct wave (example: L & R direct waves arrive at a carefully matched 12 mS and first reflected waves arrive at a carefully matched 10 mS +/- 10 uS or so later)
All will work together to create a killer soundstage, assuming "all else" is in order.
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post #33 of 35 Old 12-01-16, 01:21 PM Thread Starter
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Re: GIK Acoustics DIY Acoustical Panel Build Thread

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Savjac wrote: View Post
Wow, very interesting AudioCraver, thank you so much for sharing. It makes me want to get off my behind and do the same thing.

I will be a bit of a pain and when you hear the result you will wonder why you waited so long.
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post #34 of 35 Old 12-01-16, 06:05 PM
 
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Re: GIK Acoustics DIY Acoustical Panel Build Thread

Quote:
AudiocRaver wrote: View Post
Early reflections are your enemy, unless they are your friend.

If they
  • arrive from the same pan location as the direct wave (left-to-right pan), not significantly outside of or inside of the L & R speaker listening angle
  • arrive at the same delay time within a few microseconds vs the direct wave (example: L & R direct waves arrive at a carefully matched 12 mS and first reflected waves arrive at a carefully matched 10 mS +/- 10 uS or so later)
All will work together to create a killer soundstage, assuming "all else" is in order.
I think what I should have said was that with the first reflection points covered(ceiling and side walls)...the front wall made an even bigger difference when it was covered(we were not expecting as much of a difference as it made).

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Samsung 65" FP, Yamaha CX-A5100, Xilica XP4080, (4) Klipsch RP160MS, (4) JBL 8340As, (2) Yamaha P2500s amps, PS3, XBox One, (1) Asus mini pc, (2) Furman Power Conditioners, Darbee Darcet, and a Project RPM 1.5 Carbon turntable..
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post #35 of 35 Old 12-02-16, 01:13 PM Thread Starter
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Re: GIK Acoustics DIY Acoustical Panel Build Thread

I follow you, and can see how you would come to that conclusion. My own work has led to prioritizing the front wall, and still hitting the other early reflection points, but with simple foam square treatments, leading to the same result. I have done nothing with the ceiling and feel no need to, per the reasons given in this previous post (ceiling reflections are "SS&I friendly"). I have been very impressed by the improvement the GIK panels have given, along with the batting behind them on the wall. More on that later...

Edit: SS&I were already good, so one can easily wonder how much an improvement will be gained by treatments like were recently added. Then you try them, and ZOWIE! I am SO glad I did it!
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