Re: Tricks of the trade?
The only thing I can say that I have found out is lots of port area, a well designed box that doesn't flex, coat all exterrior walls with resin. I have also found out that box size depends on the amount of power you are using. A larger box will make the sub(s) more efficient. But this is only good if your using a minimul amount of power. If your running them at or around the rms value, you may actually want a box around the reccomended size. If you want to put more power than the rms value put them in a smaller box so they can handle it. (This is why you see guys putting 5k to a 12"...it's in a .5cu' box)
I have an sql box for my Brahma. It's 4.5cu' tuned to 38Hz....makes my stomache hurt. Tune your box a little higher, like Gauntlet said. Some where around 36-40ish. I have a few ideas for an all out spl box that I will be competing with next season, but your interested in sql so I'm not geting into detail about it.
2006 Jeep Liberty
Adire Audio 15" Brahma running off Cadence A7hc, Clarion hu, MB Quart 6.5s and 5.25s running off old school Punch 800a4
146+db @ 38hz with 1200w and a single 15"
Lv = [(14630000 x R^2) / (Fb^2 x Vb)] - 1.463R
*Vb = vol. in cu"
**R = sq.rt. A / Pi (for square/slot port)