MT122 - questions about MT-121 from 15mm plywood.

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questions about MT-121 from 15mm plywood.

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=84806
Printed Date: 27 March 2026 at 4:54am
Software Version: Web Wiz Forums 12.08 - https://www.webwizforums.com

Topic: questions about MT-121 from 15mm plywood.

Posted By: Turo
Subject: questions about MT-121 from 15mm plywood.
Date Posted: 25 January 2014 at 6:21pm

I'll be building MT-121's (Rog's design) from 15mm plywood instead of 12- & 18mm and i was wondering that should the distance between the horn and the driver mounting stay 24mm?

If i make it 30mm as it would become the volume between driver and horn increases by 1.25. I'm just worried that this will mess something up?

Thanks!

-Turo

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Replies:

Posted By: AndyWave
Date Posted: 27 January 2014 at 8:03pm

Why not route 6mm recess for driver mounting and u got back to that 24mm. Otherwise lower acoustic lowpass frequency because of larger front volume.

my 2p

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