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In Reply to: RE: Audio Note J's Boomy Bass - What to do? posted by AudioSoul on May 15, 2009 at 23:04:24
The bass problem which to my ears is originating from the port is causing "vibrating" frequencies that to my ears are somewhere in the 40-60hz ranges. I will keep playing but it is very agravating after paying so much money for upgrades. I have them on the "yet to be released" Star Sound second generation stands(these are replacing the sistrum at a higher price point)
The vibration through walls, floor etc. screws up the timing of the music(to my ears this is what is sounds like) The bass I have heard on E HE's if anything was a tad dry, and there was no "port noise" I feel like even though I have improved the problem, it is still screwing up the timing. There is this sort of delayed unnatural harmonic coming with the sound, through room "vibration" and second harmonic port noise. making the speaker disappear less. I can leave and even like a bit fatter bass in the upper mid bass (80hz - 120hz) but what its doing is robbing the magic from the system. The bass problem isn't just a bass problem it screws up the midrange and everything else. I may be exagerating a bit as it does not sound like a car stereo, but at certain instances that buzz, vibratiion kicks in in a lot of music. This is what none of us are shooting for unless we are 16 installing some kickers in that back of our Firebird. I also tryed stuffing the ports with paper towels which helps a teeny bit.
I was almost positive the problem is the room, but it is a pain in the butt moving around Star Sound
Stands.
Follow Ups:
wasn't nearly as complete as this one
NT
I'm trying to see a picture of this in my mind. You have a 12.6 short wall, a 24 foot long wall and 12 foot high ceilings. By the sounds of it you're room is a lot better than mine in size for this speaker so there is definitely a way to get around this problem.
Though I'm not sure about having them on the long wall since I've never tried them that far apart. The High Ceilings.
Is there a way to get them on the short wall? Still at the VSAC show in 2008 the AN E was placed very far apart in corners and many felt it was the best sound of the show so being far apart should not be a problem. I'd still put them as close to the corners such that you can't even put your finger between the cabinet and the wall with toe in firing 6 feet in front of your head. This will be severe - then gradually turn them to face you but still in front of your head.
If this is the case, then I'm not surprised you're experiencing the problems you have. Unless each speaker is in the same position relative to the room boundaries you are going to experience an unequal frequency response from each of the speakers. This will mess up the imaging as each speaker will have peaks and dips in the frequency response that is different from the other due to unequal positioning. Its also quite possible that one speaker is positioned in an area that is creating the boom you are experiencing. I experienced something similar to this when I had my AN/J's in a large room along the long wall where one speaker was very close to the center of the long dimension and the other was about four feet from the corner. Moving them to a relative symmetrical position was much better.
If you have a Radio Shack SPL meter measure each speaker separately from your listening position with 20-20K Hz 1/3 octave test tones to see how they differ in their current position. Don't be too concerned about the meter's ultimate accuracy as you are measuring each speaker relative to the other. My guess is that you will see a definite difference in their response and one may be the boomy culprit. If that is the case, repositioning the speakers for the smoothest and more equal frequency response relative to each other will give you much better results if that is feasible in your room. Good luck.
Don't be too concerned in attaining a relatively flat response when measuring both speakers together after you've done the separate measurements and tried to optimize the speaker positions relative to each other. Due to the speakers' response and room interactions that is nearly impossible in real life. Final positioning should be done by listening, not measurements, as it is you who will determine what sounds best. When listening if you're thinking about the music and forget the sound, you're done.
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