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Multi-Way Conventional loudspeakers with crossovers

Speaker box dimensions question
Speaker box dimensions question
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Old 9th November 2018, 10:15 PM   #11
tacoman5000 is offline tacoman5000
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Quote:
Originally Posted by GM View Post
Right, boxes, etc., have standing waves [eigenmodes] same as rooms, just higher in frequency simply because the box is tiny relative to a typical room, so to keep these standing waves from audibly modulating the driver[s], the easiest thing to do is shape it in a golden or acoustic ratio to drastically reduce the amount of internal damping required to fine tune it: HyperPhysics

Very high aspect ratio boxes have 1/4 pipe [TL] resonances, so offsetting the driver [or vent if used] at an odd harmonic along its line damps it somewhat: Resonances of open air columns

GM
That's awesome and makes a lot of sense. To be honest though, I don't have enough of a background in Physics to understand it completely. When you say offsetting the driver at an odd harmonic along its line, I don't exactly understand how to do that. But it's all interesting so I might just read up on that as well.
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Old 10th November 2018, 01:31 AM   #12
turk 182 is offline turk 182  Canada
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the young paduwan's eyes are opening....will he be consumed by the dark side...
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Old 10th November 2018, 03:33 AM   #13
tacoman5000 is offline tacoman5000
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Originally Posted by turk 182 View Post
the young paduwan's eyes are opening....will he be consumed by the dark side...
Haha. I may be young in DIY audio but I'm already in my late 30s. I have the mind of a 20-something guy though so maybe that still applies
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Old 10th November 2018, 06:23 AM   #14
olsond3 is offline olsond3  United States
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Hornresp software has the ability to model a box and show the response from internal reflections with different levels of damping material included. There are tutorials for it and it's free.
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Old 10th November 2018, 07:27 AM   #15
tacoman5000 is offline tacoman5000
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Originally Posted by olsond3 View Post
Hornresp software has the ability to model a box and show the response from internal reflections with different levels of damping material included. There are tutorials for it and it's free.
Great, thanks. I'll check it out!
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