Originally Posted by 02Zetechse
First off do not Build a 60hz "spl " box ... it wont necessarily be louder ... Tune to where your box peaks at the Fs of the Focus . Your going to want to run Aeroports not a slot due to better efficiency ... Look at Terry Brocks build . A bonus with Aeros is that you can make them interchangeable . ...
BOX TIPS :
1 round all corners on the outside of the enclosure
2 Resin the inside of the enclosure and outside
3 do double layer 3/4" birch or mdf
4 front baffle 3 layers
5 use 1/2" all thread as your bracing .
Agree on aero ports (or octoports) you could also change tuning on the fly.
How do people hit 150db with a single 8" and 500 watts... oh yea cus they tune the box to very high frequencies.
use this (http://www.linearteam.dk/default.aspx?pageid=newdriver
) and it will give you an idea of the possible outcome with different tuning options.
Also you can have an enclosure that sounds loud and registers a low score and have an enclosure that isn't to loud but registers a very high score.
amplitude and energy are two different things.
1 Won't make even a minor difference but will look better
2 another thing that won't do much
5 with double layers and 3 layer baffle(that you suggested) there would be 0 need for bracing....