Quad RL-P15 build SLLT: Is 1 1/2" MDF needed?

What are the dimensions of your box? I don't think you would need to go to 1.5" as long as it is properly braced, but I'm not the expert on SLLT. Sounds like a wicked project though!:devil:

Hey THX;
Basically it is a copy of Rodney's sub @ 8' X 3' X 4' (70 cu.ft internal) tuned to 11.9 Hz.


Jujuman

jujuman said:

Hey THX;
Basically it is a copy of Rodney's sub @ 8' X 3' X 4' (70 cu.ft internal) tuned to 11.9 Hz.


Jujuman

Click to expand...

Cripes!

Is there a link for Rodney's build?

Here ya go: IB Makeover

Much thanks!

1 1/2" on the facia and 3/4 for the rest is fine. I'm not sure what you mean by 2" X 2" wood for bracing in a grid of 1'. It would help if you could post a drawing to make sure we understand exactly what you mean.

Hey Mike P;
The bracing will be "window pane" type running both ways on each panel to ensure the box doesn't vibrate.

Jujuman

That would do it.

1.5" on the driver baffle(s) is fine, along with .75" walls, assuming enough bracing is used. For a sub enclosure, tight matrix style bracing is overkill, but any unbraced surface longer than 1' long is insufficient IMO. So, for huge enclosures, a spaced out matrix brace may be necessary...but it really all depends on the how high you intend to cross them over.

Also, exterior scrap 2x4's can work good.

Another thing that can help is the use of push/pull or push/push style manifolds where the driver's vibrations cancel out.