ringspun09

I'm going to be starting a 4th order blow through my rear deck soon and had a few questions. One being when I port through my rear deck would it be best to fallow to window angle to port straight up into it?

2 12 DC level 3m2, DB Drive A7 2500, I have about 7 cubes available total. Soon will be another A7 2500 and 2 12in DC XLm2s

What other ways, I've tried so many things but a 4th that's all I can think of now. 2 12s is the most I can fit in my trunk and I can only do 142.8 on music, I want to be louder, possibly move some hair and and have a wider range while doing all this.

OK wider range then I have now lol, my current lpf has to be set at 45 an ssf is at 33 lol. I would like to play between high 20s to mid 50s. I don't need to play as low as some people with 4ths, I don't listen to chopped and screwed, but occasionally my music drops below 30.

OK, thank you. So basically now I'm lost lol. Right now I have 2 12in DC level 3m2s on a DB Drive A7 2500 in a 4 cube box tuned to 34hz with 15sq in of port per cube. The rear seat of my 2000 Audi A8 is as solid and sealed up as fort Knox. I cut out a hole roughly 18x30 in my rear deck and hat shelf the glassed it to make it clean again to release to pressure from the trunk. My theory is if I build a 4th order and seal it to the rear and blow through what was once a rear deck it'll yield higher numbers while having a wider range, move a lot more air and no loss of out put into the trunk. Am I correct on my thinking or am I off?

So what's the 4th order bandpass that I hear everyone talk about on like ****? The ones that play loud low and move a lot of air. Its a sealed rear chamber and ported front chamber. That's a 4th order right?

Just saying hi lol

There's a difference? Sorry I only know it by a 4th order bandpass. The enclosure that's a sealed box on one side and a ported on the other.

Manly just need to learn about 4th orders if anyone can help

Thank you. Here to ask lots of questions and learn lol