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Help with rear MT122 panel

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droid017 View Drop Down
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    Posted: 08 November 2019 at 5:23pm
I'm getting into my first set of MT122s and the plans indicate the rear panel should be removable. How did you accomplish this? 
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cravings View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote cravings Quote  Post ReplyReply Direct Link To This Post Posted: 08 November 2019 at 5:36pm
It's all on the plan. Removable panel which bolts onto the battens that go round the sides.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote droid017 Quote  Post ReplyReply Direct Link To This Post Posted: 14 November 2019 at 9:15pm
I don't see any battens in the plans? Unless you mean the shelves that hold up the wood horns?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DMorison Quote  Post ReplyReply Direct Link To This Post Posted: 14 November 2019 at 9:49pm
No, that plan doesn't actually show it at all.
Look at the plans for X1 etc which do have access panels shown properly - then work out how to implement the same thing on the MT122. The only thing you'll need to be careful of is to make it wide enough to get the 12's in as the back of the cab isn't all that wide.
HTH,
David.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote droid017 Quote  Post ReplyReply Direct Link To This Post Posted: 15 November 2019 at 3:27pm
Thanks DMorison, I can work out how to make the back removeable/mountable, just wasnt sure if there was a preferred way. 

Does the panel need to be sealed with anything? Is it important to be airtight on these cabs? I've only built subwoofers before, but It doesnt seems like the actual cabinet space is important for sound on the MT. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote cravings Quote  Post ReplyReply Direct Link To This Post Posted: 15 November 2019 at 4:22pm
oops, sorry, my mistake about the battens on the plan. when i built mine, i drew out the plans myself in CAD for how i wanted them and worked off them.

the panel should be airtight yes.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dub Specialist Sound Quote  Post ReplyReply Direct Link To This Post Posted: 16 November 2019 at 2:13am
Just use some one side sticky gasket foam around the access panel battenings...

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Post Options Post Options   Thanks (0) Thanks(0)   Quote droid017 Quote  Post ReplyReply Direct Link To This Post Posted: 20 November 2019 at 2:18am
thanks y'all. Have any of you built the MT122 specifically? I have some questions about assembly order.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote cravings Quote  Post ReplyReply Direct Link To This Post Posted: 20 November 2019 at 11:33am
i built mt121s. a good few years ago though.



must try to find whatever photos i took along the build.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote droid017 Quote  Post ReplyReply Direct Link To This Post Posted: 20 November 2019 at 7:37pm
Those look great! Build pics would be super helpful, all of the old threads seem to have dead pics. 

What order of operations did you follow? I'm thinking of assembling the wood horn separately, then putting the sides/top together with the "shelf" inside, then putting the horn in after that. My concern is that if I'm off by a few mm assembling the cabinet that the horn wont fit right. 

With the horn - Do I see that you used a temporary "backplate" at the rear to help assemble it? 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote cravings Quote  Post ReplyReply Direct Link To This Post Posted: 20 November 2019 at 10:06pm


sorry i don't seem to have good photos.. it was a good while ago now that i did these. so yeah i think i assembled the whole horn and then fitted it to one side, and fitted the other bits, fitting the other side last.

i rebated the side.. don't know that it was neccessary or really gave any advantage though.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote cravings Quote  Post ReplyReply Direct Link To This Post Posted: 20 November 2019 at 10:40pm
found some other photos

https://imgur.com/a/07c5jTM

Edited by cravings - 20 November 2019 at 10:42pm
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