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In the Forum:
Audio Discussions
In the Thread:
Loudspeakers and headphones
Post Subject:
Re: The “alien sounds”?
Posted by
JLH
on: 12/2/2005
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After looking at the pictures at
http://www.webbtjanst.se/lenco/loudspeakers.asp
I'm feeling like it is both your room and the unfinished horn throat. Maybe more room related.
If there is a rough section of your horn throat with "steps" of 3/4" material, then you will get throat reflections where the distance from the throat imperfection to woofer cone is half a wavelength. (e.g. if you have an imperfection 6" away from the cone, then cancellation would occur at 1132Hz) This can cause narrow bandwidth suck outs that leave the other frequencies over emphasized. Second, I notice that you do not have much sound absorbing material inside your room. In addition, it is a hard wood floor. If you can stand in the room and hear ringing after clapping your hands, then you have a room problem too. Having comfortable conversation is not a good enough test. By now you know how much acoustical power a horn is capable of putting out into a room. At this point I don't think the slightly larger throat diameter is the problem.
Rgs, JLH
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