New MT122
Printed From: Speakerplans.com
Category: Plans
Forum Name: MT122
Forum Description: Discussion / Questions about the MT122
URL: https://forum.speakerplans.com/forum_posts.asp?TID=641
Printed Date: 27 March 2026 at 3:29am
Software Version: Web Wiz Forums 12.08 - https://www.webwizforums.com
Topic: New MT122
Posted By: whitehousejamie
Subject: New MT122
Date Posted: 28 September 2004 at 4:54pm
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Hi, Now that the fibreglass horns are available, how would i go about building a suitable cabinet for them? Jamie |
Replies:
Posted By: Rog
Date Posted: 28 September 2004 at 5:17pm
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Hi, I think Biotech has made some. Just make a trap cabinet and load the horns in from the front. The rear chamber for the 12's needs to be as small as you can make it. So what you are really doing is attaching the 12" driver to the horn, then screwing the horn with driver on it into the cabinet. So the driver is front mounted. Use loats of gasket tape between driver and baffle and measure the distance from front of cabinet to the baffle good. |
Posted By: whitehousejamie
Date Posted: 28 September 2004 at 5:23pm
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I see what you mean, so the tape is basically to seal the rear chamber, as you cant actually bolt the driver to the baffle. |
Posted By: Rog
Date Posted: 28 September 2004 at 5:29pm
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Yes, the horn with driver is only held in from the front. The rear of the cabinet is sealed. I expect someone will come up with a better solution, but for now it works. I have done a quick drawing.
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Posted By: Timber_MG
Date Posted: 28 September 2004 at 5:44pm
| Perhaps one could rout out a ring, cut it in half, put it around the horn and insert t-nuts as to bolt through this from the rear chamber? Has anyone measured this horn? Certainly sounds very promising. |
Posted By: whitehousejamie
Date Posted: 28 September 2004 at 5:49pm
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Or, put the baffle between the horn and driver, and use longer bolts to connect all three parts together. Although this would increase the horn length by 18mm. Jamie |
Posted By: Rog
Date Posted: 28 September 2004 at 5:53pm
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No. This would give a larger front chamber and stop the horn from working as well. Put your thinking head on. |
Posted By: Timber_MG
Date Posted: 28 September 2004 at 5:56pm
| Except if one were to mount some sort of phasing plug to this baffle, though IIRC the horn comes with one right? |
Posted By: whitehousejamie
Date Posted: 28 September 2004 at 5:58pm
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Yeah, its comes complete with phase plug... http://www.proaudioparts.co.uk/index.php?id=pornhorn - http://www.proaudioparts.co.uk/index.php?id=pornhorn |
Posted By: loophole
Date Posted: 28 September 2004 at 6:59pm
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no, it's me, not biotech who's just got some. though he has heard them, and i believe shares my views on their excellent sound ;)
i am finishing their cabinets tommorow, i think i might try mounting the driver as shown on the diagram with some slight changes. first drilling holes through the baffle at the driver mounting points, so i can use long bolts and bolt straight through the driver, through the baffle, and into the t-nuts inside the horn. i'll use gasket tape around the baffle edge and some between the horn mouth and front mounting edges, i'll also screw through there, to provide extra support and stop any vibrations will let you all know how it works joe |
Posted By: jamescg
Date Posted: 09 June 2005 at 12:38pm
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do anyone have the web site or any kind of contact to biotech. i would lov apair of those horns. thank u , james |
Posted By: bigmike216
Date Posted: 13 June 2005 at 3:26am
| you can get them from proaudioparts. |
Posted By: thisthatthisthat
Date Posted: 18 December 2014 at 6:06pm
long shot but cutting list with the compound angles by any chance?
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