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Old 23rd February 2009, 11:19 AM   #1
56oval is offline 56oval  Australia
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Default Fitting drivers in cylinders pros & cons

Hi DIY

Is there any hidden problems fitting drivers in cylinders .
This is just a rough sketchup I was thing of using a clear acrylic
frame to support the tubes .
Click the image to open in full size.
The cylinder cabs will be made of steel or alloy which I know how to work with .
Heres the original cab I was going to build
Click the image to open in full size.

Cheers
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Old 23rd February 2009, 11:32 AM   #2
Khron is offline Khron  Romania
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You might find a "pearl of wisdom" right after the first graph, on this page
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Old 23rd February 2009, 12:09 PM   #3
56oval is offline 56oval  Australia
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Quote:
Originally posted by Khron
You might find a "pearl of wisdom" right after the first graph, on this page
Hi Khron

I have a copy of Olson's AES paper and I can't find what size driver he used and I think it wasn't that large and the cylinder
had an end plate 24" just under 610mm wide with a small driver in the middle would the test out come be the same if the driver's diameter is as close to the edge as possible .

Hmmm might have to make a clear acrylic front baffle .

Thanks for the reply
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Old 23rd February 2009, 08:16 PM   #4
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Quote:
Originally posted by Khron
You might find a "pearl of wisdom" right after the first graph, on this page
Sure, although when the driver is large compared to the baffle it becomes directional and lessens the diffraction problem.

Compare and contrast Siegfried Linwkitz' measurements of a 25mm tweeter naked (1.5" baflfe) and on a 3" circular baffle with the Pluto (1.6" tweeter, ~2" baffle). 6 and 12'" measurements are also provided for the 1" dome.

http://www.linkwitzlab.com/diffraction.htm
http://www.linkwitzlab.com/Pluto/specs.htm

The Pluto is getting directional before it's an issue.

I suppose the ribbon tweeter will force a high cross-over point, although a small enough mid-range would keep that from being a problem.
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Old 23rd February 2009, 09:23 PM   #5
pos is offline pos  Europe
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56oval, check this you:
http://www.audioheritage.org/vbullet...ad.php?t=12126

construction:
http://www.audioheritage.org/vbullet...2126&page=3#35
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Old 24th February 2009, 12:30 AM   #6
pos is offline pos  Europe
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typo: "56oval, check this out"
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