novisnick
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Post by novisnick on Jun 3, 2015 18:50:37 GMT -5
Im breaking down the room!!! Arg!!! But i have to make some room for something new!!! ,,,,,,,,,,,,,,,,, Im off to debtors prison!!!!!!!! Almost!!!
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Post by knucklehead on Jun 3, 2015 19:49:35 GMT -5
Is it a secret?
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novisnick
EmoPhile
CEO Secret Monoblock Society
Posts: 27,230
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Post by novisnick on Jun 3, 2015 20:05:38 GMT -5
Need help rearranging some traps, HELP!!!! trap 1; Corner bass trap trap 2; 3' x 2' x 2" trap 3; 2' x 2' x 2". Where in this corner should they go? High? Low? Middle? Bose 901 s hight channels have left the room!!
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novisnick
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Post by novisnick on Jun 3, 2015 20:14:29 GMT -5
I just as much would love y'all's input on the left trap placement. A little more help please. behind the subs or higher up?
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novisnick
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Post by novisnick on Jun 3, 2015 20:17:16 GMT -5
Im having to move things around to remove clutter and make room for a 65" TV.
My last setup didnt last long, I think I caught whatever b has,,,,, 8)
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Post by jmilton on Jun 4, 2015 8:36:14 GMT -5
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KeithL
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Post by KeithL on Jun 4, 2015 13:18:26 GMT -5
If you think about it for a minute - it's NOT the size that's the problem (OK, stop snickering ). After all, a 12" sub can PUT OUT a 30 Hz wave that's a lot bigger than it is.... in fact, a good pair of headphones can deliver 30 Hz into that little 1" gap between the diaphragm and your ear. When we say "30 Hz" we are describing the fact that the air pressure at the microphone - or our eardrum - is going up and down 30 times a second. "Wavelength" is really just a characteristic of how that change in pressure - as a phenomenon - MOVES through the air in your room. The air isn't actually blowing back and forth 37 feet thirty times a second.... in fact, even directly in front of the sub, the air is actually moving only a few inches. What we're saying is that, given the characteristics of the air in our room, that wave will move at such a rate that the air 37 feet away will be exactly 360 degrees behind the air where we're sitting (which is just another way of saying that those two points are a wavelength apart). And, since being 360 degrees OUT of phase is equivalent (for steady state signals anyway) to being IN PHASE, the two will add together at that point. (This is also a common misconception about electricity. The individual electrons in a wire actually move rather slowly at most normal amperages... if they were big enough you could literally watch them stroll by. When current flows, you push electrons in one end, and electrons flow out the other. Imagine a garden hose full of marbles; you push a marble in one end and a marble pops out the other - but it isn't the SAME marble. Likewise, when "electricity flows" you push electrons in one end of the wire, and electrons pop out the other - but they aren't the SAME electrons. The "speed of electricity in a wire" is really describing how quickly this EFFECT propagates through the wire (how long it takes the electron at the far end to pop out after you push one in at your end - and it is that speed of propagation that is a significant percentage of the speed of light - and what we call "the speed of electricity".) If you think about bass, it's pretty obvious that, if a 12" sub can deliver a certain amount of energy at a certain frequency, a similar 12" driver could remove (cancel out) an equal amount of energy (if you could get all that energy to it). So, at least in theory, a bass trap 12" in diameter COULD theoretically remove all the bass a 12" sub could produce. (And, if your bass trap was literally a hole in the wall, it could simply "vent" the pressure outside the room - and there's not much limit in how much sound you can push through a hole. The problem is that most bass traps are passive - so, in order to "remove bass from the room" they have to DO something with it. When something like a piece of fiberglas, or a blanket, "absorbs" sound, what it's really doing is turning the energy into heat. The vibration in the air makes the fibers vibrate, they rub against each other, and the friction turns the sound energy into heat. It is this process which is limited. (If you had a one inch thick sheet of some wondrous material that could allow sound energy to penetrate it, then turn it into heat effectively, then you would have a a perfect bass trap. Unfortunately, things like fiberglas and blankets don't work very well at doing this for very low frequencies.) Now there ARE some bass straps that incorporate a layer of some sort of film (plastic sheeting) which is presumably going to allow the bass through it, where it will get "trapped" inside the device - which is full of fiberglas or stuffing - and presumably the sound will then bounce around without being able to escape until it eventually gets absorbed. (I think the idea is that the film lets the bass into the trap, but reflects the higher frequencies back into the room. I have no idea how well these actually work.) There is also at least one company that DOES make an active bass trap. (This is basically a sub that you place where you would put a bass trap. It has a microphone, and a computer, and it actually picks up the frequency you want to squash, and plays that same frequency from its internal sub, only out of phase, and so cancels out the problem frequency. I think it's Bag End that makes it, and it costs abut $2k.)
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Post by jmilton on Jun 4, 2015 13:38:00 GMT -5
So for the average guy, would EQ'ing the bass be a better option in bass taming?
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Post by ÈlTwo on Jun 4, 2015 14:04:21 GMT -5
Here's a nice picture of a striped bass trap: I just don't see it fitting in my den, but it would trap some large bass.
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Post by garbulky on Jun 4, 2015 14:31:25 GMT -5
Hehe! I don't think that will pass WAF approval. Or FAF (fish approval factor) either.
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novisnick
EmoPhile
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Post by novisnick on Jun 4, 2015 14:43:15 GMT -5
Taming the Bass,,,,,,,,,,,,,,
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novisnick
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Post by novisnick on Jun 4, 2015 14:52:30 GMT -5
So for the average guy, would EQ'ing the bass be a better option in bass taming? I believe in a little from many theory. Ot both in this instance.
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Post by jmilton on Jun 4, 2015 15:24:11 GMT -5
Why can't you guys be serious?
Like me...
Or Chuckienut.
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Post by ansat on Jun 4, 2015 21:25:36 GMT -5
So for the average guy, would EQ'ing the bass be a better option in bass taming? I prefer to treat the room before eq. Especially in the bass region. Stopping frequencies from combining or cancelling is what taming the bass would achieve which EQ cannot fix. Tony
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novisnick
EmoPhile
CEO Secret Monoblock Society
Posts: 27,230
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Post by novisnick on Jun 4, 2015 22:06:15 GMT -5
So for the average guy, would EQ'ing the bass be a better option in bass taming? I prefer to treat the room before eq. Especially in the bass region. Stopping frequencies from combining or cancelling is what taming the bass would achieve which EQ cannot fix. Tony So answer me this. Front right corner looks like this,,,, where do I put these traps? High , low, midway up the wall. One speaker and a bery very large PSA XV 15 go in that corner,
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Post by ansat on Jun 4, 2015 22:16:07 GMT -5
I prefer to treat the room before eq. Especially in the bass region. Stopping frequencies from combining or cancelling is what taming the bass would achieve which EQ cannot fix. Tony So answer me this. Front right corner looks like this,,,, where do I put these traps? High , low, midway up the wall. View Attachment View Attachment One speaker and a bery very large PSA XV 15 go in that corner, Low to midway up the wall. Think of the trap as a mirror. if you were to look at the trap / mirror, would you see the speaker your trying to treat for at your main listening position? if not, then move it to where you would. Traps would always go on a direct reflection point of your listening position and the speaker that you are trying to treat. I have my corner traps from floor to ceiling cut from triangles of www.homedepot.com/p/Roxul-Safe-n-Sound-3-in-x-15-1-4-in-x-47-in-Soundproofing-Stone-Wool-Insulation-12-Roll-RXSS31525/202531875?N=5yc1vZboco then a custom floor to ceiling frame was made to attach the fabric to. (This is in all 4 corners)
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novisnick
EmoPhile
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Post by novisnick on Jun 4, 2015 22:21:41 GMT -5
Think of the trap as a mirror. if you were to look at the trap / mirror, would you see the speaker your trying to treat for at your main listening position? Thats solid advice, Thanks!
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novisnick
EmoPhile
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Post by novisnick on Jun 4, 2015 22:22:10 GMT -5
That solid advice! Thanks
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novisnick
EmoPhile
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Posts: 27,230
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Post by novisnick on Jun 4, 2015 22:57:01 GMT -5
To put it another way, your saying or im interpreting that it would/should sound right if I look dead center of the traps and have them equidistant above and below my eyes. Do you think this setup would be advantageous? Im thinking it would work well.
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Post by ansat on Jun 4, 2015 23:07:21 GMT -5
To put it another way, your saying or im interpreting that it would/should sound right if I look dead center of the traps and have them equidistant above and below my eyes. Do you think this setup would be advantageous? Im thinking it would work well. Sound follows the "angle of incidence" rules. looking at the center of the trap, you should see the center of the woofer if the trap were a mirror. Tony
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