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need help asap....

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=13782
Printed Date: July 14, 2025 at 6:57 PM


Topic: need help asap....

Posted By: slammed00s
Subject: need help asap....
Date Posted: May 20, 2003 at 9:26 PM

i got ahold of a 10" mtx thunder6000 so im gonna hook it up before i go to the beach so i have a little bass.  i want as much as possible so i want to build a ported box.  not the round plastic ports either, i want a wall in the back of the box that turns the corner and comes out at the side. anybody know what im talkin bout?  the port will be 12" from top to bottom but how do i figure out how wide to make it?  and i dont even know about tuning a ported box...i just want it to be as loud as possible.  somebody's gotta gimme some kinda help....i dont wanna waste my time and it sound like crap.  which it prolly will anyways since i dont know much about porting a box.

thanks, eric




Replies:

Posted By: esmith69
Date Posted: May 20, 2003 at 10:03 PM

These boxes are not easy to make but if you ahve a lot of patience and time it can be done.  Here are some good links to get you started.

https://www.eatel.net/~amptech/elecdisc/spboxnew2.htm

I have that exact same sub and all I did was follow MTX's recommended enclosure sizes and volumes for the sealed box.. I twas a lot easier than ported box and a lot more forgiving if you make a mistake in the design.  With ported/vented boxes, if you mess up one calculation it could mean you'll fry your sub.



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Ethan
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"Patience, persistence, and perspiration make an unbeatable combination for success"
Donate to the12volt.com




Posted By: wvsquirrel
Date Posted: May 20, 2003 at 10:51 PM
The eatel link esmith69 posted is one of the most informative ones out there concerning building enclosures. The calculators are easy to work with and allows you to change figures easily.

From what you described, it sounds like you're trying to make either a 4th Order Bandpass or Transmission Line Systems enclosure. The links I just gave give descriptions of each, as well as some tips on how to build them.

Here's some more links to other info on enclosure building and bandpass enclosures...

But like esmith69 said, if you're not familiar/experienced at building enclosures then sealed is deffinately the way to go. Tuned/ported enclosures will hit harder then sealed enclosures at certain frequencies (the "tuned" frequency). But I've found that unless you get it just right, a sealed enclosure will give you more enjoyment and better performance overall (just my opinion). As long as you have the right specs, you can feed a sub more juice in a sealed enclosure and get better sound. If you screw up the numbers on a ported or bandpass enclosure you run a high risk of destroying the sub and wasting all the money (and then having to start over again with new equipment!)



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Squirrel
"No more Cpt. Kirk chit chat"
If its too loud, then you're too old
Donate to the12volt.com





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