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DIY For Audio
WMTMW Isobaric with open midrange build
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<blockquote data-quote="ludo" data-source="post: 47826" data-attributes="member: 691"><p>I suppose if you have the back open, the tube constitutes an open (both sides) tube, and will resonate an octave lower than it does when you close the back end. But with any stuffing in it, one is hard pressed to sustain a high-Q resonance in an open tube. A closed volume would present a much more defined resonance to the driver, like in a sealed box, stuffing or not? </p><p></p><p>I'll admit that anything involving a transmission line "baffles" me. ;D</p><p></p><p>But when the line is a simple tube, one might assume that reflections from the back can be a right bastard when the shape of the tube is so uniform and the wavelength(s) that would fit in there nicely, lie in the midrange? Then with the back open it must be better. Things don't hit the back wall and come bouncing back toward that little cone...</p></blockquote><p></p>
[QUOTE="ludo, post: 47826, member: 691"] I suppose if you have the back open, the tube constitutes an open (both sides) tube, and will resonate an octave lower than it does when you close the back end. But with any stuffing in it, one is hard pressed to sustain a high-Q resonance in an open tube. A closed volume would present a much more defined resonance to the driver, like in a sealed box, stuffing or not? I'll admit that anything involving a transmission line "baffles" me. ;D But when the line is a simple tube, one might assume that reflections from the back can be a right bastard when the shape of the tube is so uniform and the wavelength(s) that would fit in there nicely, lie in the midrange? Then with the back open it must be better. Things don't hit the back wall and come bouncing back toward that little cone... [/QUOTE]
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DIY & Tutorials
DIY For Audio
WMTMW Isobaric with open midrange build
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