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Multi-Way Conventional loudspeakers with crossovers

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Old 22nd February 2005, 08:28 PM   #1
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Join Date: Dec 2004
Location: Illinois
Default Is this possible

Is this design ( ) even easily possible to make. This is not to scale at all, just in its infancy. I know the problems associated with cylindrical resonances, etc, just wondering.

I was thinking sonotube could work, but I was hoping for an all wood type construction, is there such a thing as MDF cylendirs.
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Old 22nd February 2005, 08:35 PM   #2
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Join Date: Oct 2004

Cut multiple rings of MDF and glue them together to form cylindrical enclosures.

Attach the cylinders to a 1" to 2" thick front panel to form the design you have shown.

I built something similar to this once using cardboard cores with a wall thickness of 1/2". These were special spiral wound paper tubes made for the pulp & paper industry.

I used 6" ID tubes for 6 1/2" woofers, and a 4" ID tube for a Vifa D27 tweeter. Oak veneered 3/4" MDF was used for the front panel. My system was only an MTM, not a WMTMW as shown.

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Old 22nd February 2005, 08:47 PM   #3
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Looks like diffraction would be a problem.
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Old 23rd February 2005, 06:40 AM   #4
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What do you mean by diffraction? This is my first DIY project.
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Old 23rd February 2005, 07:25 AM   #5
jdybnis is offline jdybnis  United States
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Join Date: Jul 2004
Location: Pasadena, CA
Originally posted by bjackson
What do you mean by diffraction? This is my first DIY project.

Try something more conventional for your first project. Perhaps putting the same driver is a regular square box. After that adapt it to a more crative enlosure. At that point you'll know what works and what doesn't

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Old 23rd February 2005, 08:08 AM   #6
rjb is offline rjb  New Zealand
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Join Date: Jun 2004
Location: Piha
Go ahead and do it to your own design.

If you simply follow the well trodden path of conventional boxes, you will end up with something that looks and sounds the same that everybody else has done. Whats the point of that. If you simply want to listen to music/Ht, its cheaper and more convenient in the long run to to buy the best commercially produced speakers (or kits)) you can afford. DIY to your own design does not save money, but its a lot of fun.

If you don't experiment you won't learn. However be prepared for it to sound different, which may not be either "correct" or to your taste. At the very least they will look interesting.

However to mimimise the obvious potential problems, check out MJK's mathcad work sheets. Learn to use these, they are a big help in enclosure sizing, and as a first cut for stuffing with dampening material.
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