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Multi-Way Conventional loudspeakers with crossovers

sand-glass port
sand-glass port
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Old 25th August 2004, 03:33 PM   #1
Artmaster is offline Artmaster  Ukraine
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sand-glass port
Default sand-glass port

hello!
I want to do sand-glass, or egg-glass port for my subwoofer.
it's should be round.
how can I make it? which material and method?
thank you
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Old 25th August 2004, 04:23 PM   #2
saabie22 is offline saabie22  United States
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Yury,

You could try using PVC pipe reducers like the one shown in this attachment.

I don't know if you will have a step inside the fitting where the straight tube is connected. You might be able to smooth this with a file.

I've seen these fittings with about a 2:1 ratio between the large and small diameters.

Your picture shows a narrow angle (30 degrees?). These fittings usually have a 90 degree cone angle.

Good luck!


Mike
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Old 25th August 2004, 05:13 PM   #3
markp is offline markp  United States
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That shape is called an 'hour-glass' in English. That might help you find it in a search.
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Old 26th August 2004, 07:43 AM   #4
Artmaster is offline Artmaster  Ukraine
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sand-glass port
thank you markp to put right my English. I couldn't write correctly yet. it's important for me. ok. I'll try
dear saabie22, I won't do my port by 90 degree cone angle. I wanna do it round. theoretically I wish to make it exponential.
thas I ask all of you about it
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Old 26th August 2004, 08:16 AM   #5
bigmike216 is offline bigmike216  Canada
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Maybe you could turn it up on a lathe out of wood? Maybe do it in two pieces and join it in the middle?
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Old 26th August 2004, 08:32 AM   #6
Artmaster is offline Artmaster  Ukraine
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sand-glass port
it's will be nice , but I'm not a lathe operator.
now I think about gypsum
but it's difficult either, and not exactly what I want.
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Old 26th August 2004, 09:17 AM   #7
zuki is offline zuki  United States
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http://www.partsexpress.com/webpage....63528&desc=ASC
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Old 26th August 2004, 09:42 AM   #8
Artmaster is offline Artmaster  Ukraine
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sand-glass port

I couldn't see it.
my firewall close access to "sex" sites
something interesting for me? except girls, boys and other stimulator?
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Old 26th August 2004, 07:50 PM   #9
bogoes is offline bogoes  United States
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Here, try Madisond instead, they and PartsExpress sell flared ports. Scan about half way down the page to find the ports.

Madisound Accessories

Good luck.
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