Porn Horn top sketch
Printed From: Speakerplans.com
Category: Plans
Forum Name: Po rn Horns
Forum Description: Discussion / Questions about the Po rn Horns
URL: https://forum.speakerplans.com/forum_posts.asp?TID=1598
Printed Date: 07 June 2023 at 8:19pm
Software Version: Web Wiz Forums 12.06 - https://www.webwizforums.com
Topic: Porn Horn top sketch
Posted By: Lasse Lukkari
Subject: Porn Horn top sketch
Date Posted: 24 March 2005 at 8:14am
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Remeber this is just a sketch! These are no way ready plans. http://www.bl-online.org/~lasse.lukkari/porhorn.pdf - http://www.bl-online.org/~lasse.lukkari/porhorn.pdf Feel free to comment. If anyone else has any plans for the Porn Horns I really would like to see them.
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Replies:
Posted By: mobiele eenheid
Date Posted: 24 March 2005 at 9:15am
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Rog stated that the driver needs as less rear chamber as possible. My own sims indicate a rear chamber of about 0.6 ltr. So I would build the final chamber as much around the driver as possible. Perhaps make a vent directly onto the magnet cooling vent for heatdissipation or make the rear chamber out of metal? Cheers |
Posted By: Lasse Lukkari
Date Posted: 24 March 2005 at 9:22am
SN 12B doesn't have a cooling vent If i calculated right the original MT122 has about 17,5l. In my sketch it is about 15.2l. |
mobiele eenheid wrote:
Posted By: Tony Wilkes
Date Posted: 24 March 2005 at 12:37pm
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I thought the cooling on the SN range was thru the perforated sections around the magnet assembly? Tony |
Posted By: Lasse Lukkari
Date Posted: 25 March 2005 at 5:28am
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That is how it's done. |
Posted By: roborg
Date Posted: 25 March 2005 at 4:56pm
A good way to get really small volumes is to make the rear chamber depth so that the rear panel is coincident with the magnet, then seal around the magnet, the entire back part of the speaker + cooling vent will be outside the cabinet that way, optimal cooling. I will make the next batch of mid-horns i build this way. cheers Rob ------------- What I cannot create, I do not understand |
Posted By: roborg
Date Posted: 25 March 2005 at 5:00pm
i'm thinking of speakers like this  sn12b, well what can i say, it'll just have to get hot in there, you could always blow cool air at the cone  ------------- What I cannot create, I do not understand |
Posted By: Lasse Lukkari
Date Posted: 28 March 2005 at 11:02am
| I think I'm going to use 6mm alu plates like used in the labsubs. |
Posted By: Tom Umney
Date Posted: 28 March 2005 at 4:02pm
| I remember ages ago seeing a car speaker with a miniture cooling fan bolted with brackets across the vented pole piece. And was rated 2500w rms I think it was Atomic or some make like that. |