port tuning

Let's see...ooops my crystal ball just broke.  I got a vision of a few things though...you drive a honda hatchback, an older model...it's maybe a '91...you were born about 6 years before the car was...you listen to Eminem and Young Gunz...but there's something missing.  Oh yeah, the subs!  I can't visualize what subs you have!  How can we help without knowing that??

Really though, that might help.  But it could help you, too, because almost every sub manufacturer lists some recommendations for vented boxes in their manuals.  Most are tuned to about 40 Hz.  That's not necessarily where a box designer/builder would end up tuning the same subs...but it seems a pretty good choice for rap and hip hop.  The designer might try to tune a little lower in most cases for an everyday listening situation like you have.  It all boils down to the space you have to work with and the T/S parameters of the sub.

Remember:  you're not going to get much output below the tuning frequency.  The sub becomes unstable under that frequency and so the lower freqs have to be filtered out. 

Here's two examples of low bass freqs that I've tested:  the low bass in the live version of Hotel California is at 40 Hz.  And this other one is a pop song but I know you're familiar with it - Doncha wish your girlfriend could be...by that all girl dancing group.  The bass that finally booms in that song is at 41 or 42 Hz.

Um, that's just the way I always talk.  For an old white guy did I get the Young Gunz part right?  The 40 Hz thing is what I was getting at if that's anything close to what you were thinking.  And, oh yeah, I design vented boxes so I know a thing or two about it.

i know you know what you talking about cause i read some of your post and i was hoping you be the one who answer my question and i wasn't being mean im just getting a big ass head ache from this box.  I want this one to be the last and i want everything to be pefect  since im put alot of work on this one.