2 MJ-18's, 9 cubes net in trunk build

[duece212 5,000+ posts]

How about if I reinforce the spots where I'm putting the rod through with a double layer of 1/2, so like a 5x5 inch cut of 1/2" mdf over the spot, and then threaded rod through the middle of that+the outside wall

That would make a big difference, something to just spread that load out where the rod goes through the wall of the box.

 

[MikeyB 5,000+ posts]

I would even consider cutting some strips of 1/2in to brace the walls of the enclosure, then you can run your threaded rod through that. (Cut like a 5in wide strip the length of each wall, do like 2 or 3 per wall or something)

Knaw mean?

 

[Rashaddd 5,000+ posts]

I would even consider cutting some strips of 1/2in to brace the walls of the enclosure, then you can run your threaded rod through that. (Cut like a 5in wide strip the length of each wall, do like 2 or 3 per wall or something)
Knaw mean?

Yup I'll probably end up doin somethin like that, thanks for the suggestions ppl

What diameter of threaded rod?

 

[spencer321 10+ year member]

looking forward to this, please get metered afterwards lol im extremely curious about output, sound quality, and low frequency extension.

 

[Bigpimpin91 10+ year member]

I like the way those new MJ's Look.

I might have to get the new ones.

 

[Rawr-DQ 10+ year member]

interesting

 

[mrogowski 5,000+ posts]

//content.invisioncic.com/y282845/emoticons/yumyum.gif.0556df42231b304b9c995aefd13928a8.gif

Forget the rod. Use MDF "window" bracing - you will gain so much more by doing that.

 

[ssackett 10+ year member]

i like what your doing here. you gave me a couple ideas //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[Rashaddd 5,000+ posts]

//content.invisioncic.com/y282845/emoticons/yumyum.gif.0556df42231b304b9c995aefd13928a8.gif

Forget the rod. Use MDF "window" bracing - you will gain so much more by doing that.

Seriously? Alot better than rod? You mean like this?: http://www.caraudio.com/forum/showthread.php?t=344850&highlight=goliath

And how thick of pieces would I use for that?

Anyone want to second that?

 

[mrogowski 5,000+ posts]

Yup, except you don't have to do the window part, just the perimeter since your box isn't as big as that.

Reason being, is all of the rod's strength is focused on a very small area with the wall getting weaker as the fringe increases. Having something focused the whole side of a wall expands this fringe field four-fold.

Use your 1/2" MDF - that will be just fine.

 

[denim 5,000+ posts]

Excellent choice on subs.

 

[IonRL205 10+ year member]

Looking good. Will be nice when it's done.

 

[Rashaddd 5,000+ posts]

Yup, except you don't have to do the window part, just the perimeter since your box isn't as big as that.
Reason being, is all of the rod's strength is focused on a very small area with the wall getting weaker as the fringe increases. Having something focused the whole side of a wall expands this fringe field four-fold.

Use your 1/2" MDF - that will be just fine.

so basically the important thing is to have a solid piece bracing the entire length of each side, sounds good, I'll probably take a pic of what I'm doing before I secure it and make sure that looks good to you

Excellent choice on subs.

Had em for a while, lovin every minute of them //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif can't wait to have em in again and a little louder hopefully

 

[Gearstix 10+ year member]

I kinda wish I bought some 18s but I can't really fit them. I think my two SPL-12s will satisfy me when I get it all done .....

Looking forward to see your build finished... I'm trying to come up with an excuse to order a MJ-18M...

 

[schrummy 10+ year member]

nice work. cant wait to see the end result