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mt121 with phase bung

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=97125
Printed Date: 28 March 2024 at 8:48pm
Software Version: Web Wiz Forums 12.06 - https://www.webwizforums.com


Topic: mt121 with phase bung
Posted By: screeldnb
Subject: mt121 with phase bung
Date Posted: 19 November 2016 at 1:24am
Are there any building plans for an mt121 top with phase bung? I'm really keen to build some but don't have the technical knowledge right now to design a phase bung myself. I would be making them out of plywood with a lathe so would want it to be one of the round ones. If I do try design one myself what would the consequences be if its poorly designed, will it have a negative effect on the speakers performance or will it just not improve the performance at higher freq? 



Replies:
Posted By: cravings
Date Posted: 19 November 2016 at 5:01am
if you search, you'll see people have brought it up before... and that the answer has always been that you can't just fit a plug to a horn, it'll totally change the horn. so you'd need to design a new horn with plug.. together.

i don't know much about it.. plenty of reading on phase plugs about though.


Posted By: screeldnb
Date Posted: 19 November 2016 at 12:37pm
I totally get that you can't just fit a plug to a horn, its just that there have been lots of people mentioning that they have wanted to use a phase bung with the mt121 design so just incase someone was willing to share their updated plans (or plans for a similar horn). And if not, can i build the horn now and then design the phase bung later or will that be alot trickier? 


Posted By: cravings
Date Posted: 19 November 2016 at 1:25pm
again, i'm no authority really. but the plug is part of the horn. obviously the dimensions of the horn change completely if you put a plug in it. so i would suspect that no, you couldn't do a horn first and then a plug later (and expect it to work well).

off the top of my head, forum user Doober on here did a lot of work on a 6.5" horn with a phase plug, find his topics and i think he said quite a lot about how he went about the design.


Posted By: bee
Date Posted: 20 November 2016 at 11:39am
just too add, the mt121 has the wrong shaped baffle to mound a plug, the baffle needs to be round...

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Posted By: RoadRunnersDust
Date Posted: 20 November 2016 at 9:28pm
Pah! 'Needs'

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