Sub Box?

STEVDART- when you say 'But you should be able to get good complimentary low bass out of it with a modest system. ' What would you discribe as a modest system?

Mine is set up as following:

Pioneer TS-A6990S 5way 400w 6x9z

Pioneer TS-C160R 6" splits

Pioneer GM-6000F 4ch. amp running the above speakers

Audiobahn AW120T 12" 500RMS Sub (was a present  )

Pioneer GM-D510M mono amp running the above sub

& a AERPRO 1 Farad Capacitor

So what does everyone think? will it complement the rest of the system?

Cheers!

Yes, that should be fine.  I just meant that because the specs for the sub say it is 500 watts RMS, the parameters really don't put it in the catategory of "monster sub" capable of deafening SPL.  So expect some good low bass, but don't expect to rock the block.

As for the port size, the opening is important, as too small of an opening will cause chuffing sounds as air is expelled.  A good rule is no less than 25% of sub diameter, although I wouldn't go less than 4".  Note that the port length grows when the opening gets bigger, but ports can be built with a bend inside the box.  As always, the bigger the port the more it displaces air in the chamber, so the box has to grow to compensate.

Look at it on WinIsd, Nat.  It is one of only a handful of familiar sub brands that are included in the database, and that's why I'm pushing it on you so hard.  It means you don't have to type in all the parameters because they're already there.  You just select "new project", select your sub from the scroll down menu, and click through each window.  The program has determined the best design based on the sub parameters.  You look at that first, and then if the size doesn't work for you, play with changing things and let the program adjust to the changes.  I would recommend using what the program determines for that particular sub, because the enclosure is small enough to be easy to work with.

I guess you already have a decent deck?  I like it, looks like a good entry level system, that sub should really fill in your bottom end and I'm glad your putting real power to your components and 6x9's (ewww 6x9's).  Should be loud and clear.

Yeah this is what I too have been looking for with those box formula's. Up until now I just used the info that comes on the spec sheet from the manufactor of subs and kinda filled in the blanks the best I could. I usually came out pretty good but now with those formula's , I can narrow it down to a more exact science. Hopefully to maximize a speakers potential. Im half a$$ tempted to spend some time in the shop this weekend and experiment now with the formula's. (Especialy with PVC ports). BTW......Thanks again for you and everyone else's time and experience to help me take this game to the next level for me. Props to All yall Dawgs !

Ok, thanks for all your help. Next question, when i have the specs for the box and hav it all cut out, what/ if any stuff should i use to put inside the box. I have heard a few things, ranging from some sort of coating to cover the inside of the box, to putting foam or some sort of filling inside.? What does you the more experienced people think on this matter?

Cheers

Yeah if your box is made to good specifications then you don't really need polyfill or a liner.  One normally sees it with sealed boxes that may come up a tad small or it is possibly lined with it to prevent a standing wave forming inside a box.

LOL, i just read this just now sorry. My deck is a Pioneer DEH-P7650MP it has 3 prevolt outputs etc, its like 2nd or 3rd from the top. :D And also what do you have against 6x9z, these ones a sick they go so hard, if i had them in b4 i decided to put in the sub too i would not hav worried bout the sub. lol

So would i worry about bracing? And if so how do i go about doing that? when you say bracing do you mean like little corner bracket thingies  .

Cheers!