Need help with the box on a JL Audio 12w7-3

[annunaki]

I think I'm a bit happier with this layout. Not quite finished though.

Red is where I intend to add small windows to tie into the bracing. I think once those are added that should be good yes?

Yes that looks very good. You could also do the same across the top & bottom between the middle braces. However, that would not be necessary. So long as your construction techniques are solid this will be a very solid enclosure.

 

[Warpdrv]

agreed, that looks very nice....

Good luck with the build, that thing is going to have some great output and really nice SQ...


I really love my JL F112, amongst the best I've heard in terms of SQ....

 

[annunaki]

agreed, that looks very nice....

Good luck with the build, that thing is going to have some great output and really nice SQ...


I really love my JL F112, amongst the best I've heard in terms of SQ....

I would agree, especially since I have the DIY version

 

[lsiberian]

Yes that looks very good. You could also do the same across the top & bottom between the middle braces. However, that would not be necessary. So long as your construction techniques are solid this will be a very solid enclosure.

It looks to me like he's got a near slot port in that design with all the bracing.
Solid indeed.

 

[Nugu]

Got my sub in the mail today, my word that thing is heavy. I'm going to break my spine lifting this when it's built. When I get a hold of a multimeter to test the sub and ensure it's in good shape I'll go get the mdf so I can start the box... eventually. I still have to get that porch I committed myself to building done.


I had a question annunaki, do I need to put that damping material (owens corning) behind the driver or anywhere else? I also wanted to ask about how you modeled the PRs as I can't find anything like them in WinISD.

I'm gonna add up the volume for the bracing when I haven't been awake 36 hours and finalize the box width then.

 

[annunaki]

Got my sub in the mail today, my word that thing is heavy. I'm going to break my spine lifting this when it's built. When I get a hold of a multimeter to test the sub and ensure it's in good shape I'll go get the mdf so I can start the box... eventually. I still have to get that porch I committed myself to building done.


I had a question annunaki, do I need to put that damping material (owens corning) behind the driver or anywhere else? I also wanted to ask about how you modeled the PRs as I can't find anything like them in WinISD.

I'm gonna add up the volume for the bracing when I haven't been awake 36 hours and finalize the box width then.

Use of material in the enclosure is not a requirement in this case. It does help to tame internal reflections and such, especially if a higher x-over point is needed.

I got the parameters for the PRs from the AE Speakers website here:
PR18-2100

 

[lsiberian]

I had a question annunaki, do I need to put that damping material (owens corning) behind the driver or anywhere else?

For a design this good I'd certainly add it to the rear panel. You are putting a lot of work in and deserve to get the best you can out of the sub. There is no need to use OC as mineral wool will just fine.

http://www.atsacoustics.com/item--Roxul-Rockboard-60--RB60-S.html

One of these would do the trick. Make sure to wrap it in something like a pillow case or burlap.