Small Ports, Curved

lucadelcarlo · 9th May 2011, 03:21 PM

Hi all,

I'm creating a smallish sattellite speaker based upon the SEAS L12, a new 4.5" coax they've recently introduced. The enclosure is essentially spherical in form and the small diameter port - in my estimation so far - looks like it will need to be curved inside the 2.5 litre enclosure. The rough build prototype I've have now utilises a an 18 mm diameter port, 9 cm in length which juts outside of the enclosure

My question is, small curved ports like this with flared ends are not available. Any ideas what to use?

Thanks in advance.

Lastly, the internal volume that a port displaces, is this the total volume of the port (as if it were a solid object inside the enclosure) or only the wall thickness of the port material?

nightanole · 9th May 2011, 03:35 PM

Why not just get some 3/4" ID flexible conduit? You can make the flare yourself.

Heat Moulded Port Flares

Cal Weldon · 9th May 2011, 03:45 PM

Deduct the total volume of the pipe.

Can you use plastic pipe from the plumbing store and incorporate an elbow? If you can't manage a flare, I wouldn't lose sleep over it.

EDIT: I like the link that nightanole added.

9th May 2011, 03:21 PM	#1
lucadelcarlo diyAudio Member Join Date: May 2009 Location: Leicester, UK	Small Ports, Curved Hi all, I'm creating a smallish sattellite speaker based upon the SEAS L12, a new 4.5" coax they've recently introduced. The enclosure is essentially spherical in form and the small diameter port - in my estimation so far - looks like it will need to be curved inside the 2.5 litre enclosure. The rough build prototype I've have now utilises a an 18 mm diameter port, 9 cm in length which juts outside of the enclosure My question is, small curved ports like this with flared ends are not available. Any ideas what to use? Thanks in advance. Lastly, the internal volume that a port displaces, is this the total volume of the port (as if it were a solid object inside the enclosure) or only the wall thickness of the port material?

9th May 2011, 03:45 PM	#3
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	Deduct the total volume of the pipe. Can you use plastic pipe from the plumbing store and incorporate an elbow? If you can't manage a flare, I wouldn't lose sleep over it. EDIT: I like the link that nightanole added. __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

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9th May 2011, 03:35 PM	#2
nightanole diyAudio Member Join Date: Feb 2009	Why not just get some 3/4" ID flexible conduit? You can make the flare yourself. Heat Moulded Port Flares

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