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In Reply to: Re: anyone folded their maggie baffles ? posted by sogood on March 3, 2007 at 06:09:32:
the resonant frequency of the folded baffle would be around 1khz if they were placed at about 12". perhaps it isn't the loss of bass, but the amplification of the resonant frequency of the baffle?
thick foam on the inside of the baffle may help. it may also lend some dispersion control of the back wave.
Follow Ups:
parallel but a bit angled ?seems that would smooth out any resonances trying to get going.
resonant frequency if there is no top or back ?i was also planning on making the side baffles either elliptical quadrants or tapering from the bottom to the top so that the very top would just be an intersection with the front so no depth at the top rear.
with a name like helmholtz im thinking you are qualified. :)
wherever the wave fits it will ring. since it's not inside of a box you can hear it pretty good. i'm pretty sure this is what others have run into. thick foam on the sides might help enough to make it worthwhile. what was the goal of this exercise other than making them narrower?
kind of freakin excercise !!!!!! lololololi saw them at the thriftystore and threw a tone generator on them and checked resistance and it all seemed fine.
i really did not need another project.
going to do the fuse bypass while im at it as i think the copper will be a bit less fragile than the aluminum.
speed of sound = 1130fps
1130fps/1 foot = 1130cps
so 1130hz for a full wave and 665hz for a half wave will fit perfectly in a one foot space at sea level
there are many acoustic absorbers with good performance in the 1khz range
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