I need instructions on how to port a box..i have no clue how & really want to learn thanks!

 

http://mobile.jlaudio.com/support_pages.php?page_id=165

There you go, hope you're good at math

 

go sealed in the camaro if your putting it in the well, unless your gonna have a single ten, dont bother. i build boxes. i know this stuff. sealed will hit hard as ****. dont bother porting, thats for spl, and not much, you loose sound quality and frequency range

 

not if you know what you are doing. Almost every high end home audio sub is ported. The only downside to ported enclosures, when properly designed and built, is the extra room they take up over sealed.

 

Sonotube sub (AKA Sonosub) FTMFW! Example (not mine)

But yeah, sealed in a Camaro.

 

we arent talking about home audio here are we ^^ also, porting does take away frequency range, that is a proven fact, if you do a real good job with the porting calculations you can get some real nice frequency range and you can make the system slam with great quality, personaly in my room I got a mtx 7500 12" with my DJ friends amp and that slams harder than most the subs ive seen for homes.

dont get me wrong, with the right calculations porting has many advantages with few disadvantages, but sealed is sooo much easier and you get GREAT sound, its a much more solid, tighter sound if you ask me.

 

yes, sealed is easier, and can sound great, and I recommend sealed 99% of the time to people for car audio. But ported gets a bad rep because of the bad ported enclosures so many people have built. But givin the space, time, and ability to properly design and tune a box, and a good woofer that works well in a ported box, a ported box can have much better low end extension over sealed, until you reach sub sonic frequencies.

I have 2 cars that I compete in SQ competitions with, one is my Firehawk, the other a Buick Regal. The Firehawk has 2 12"s for the show factor, and is sealed, simply because the box requirements for my subs ported is more then I'm willing to go for, and the sealed design sounds great too. Especially if you throw plenty of power at it.

My other car is a Buick Regal, with a single 12, in a ported enclosure, which also sounds great. But I must confess that while I built the box, I did not design the tuning specs. Had that done by my friends at JBL.

 

Porting allows more output at the tuning frequency.

- Allowable box size (location, space, pre-built, custom, or u build) is the first gateway.
- Driver must match box size, and ported/non ported enclosure
- Porting or sealed box size must match what is optimal for the driver

In other words space, the actual driver, and box volume/port tuning are all part of the equation. If you want good results you'll match them all up properly and the result will slam in a hatchback like ours.

Too many people just slap whatever brand name they like in a prebuilt box like a stealth box, or even worse, in a pre-built ported box with no thought about whether the driver matches the box.

If you ever get a chance to A-B one cohesive, optimized setup vs a slap it in setup using similar equipment, you'll never question this process again. It is well worth your time and research, and taking some effort to match it all up.

 

I started comparing all of my speakers in sealed and ported enclosures and I go for ported every time. Sealed enclosures do sound awesome, but a properly built and tuned ported enclosure will sound pretty darn close to a sealed enclosure SQ-wise, but will have a ton more output.

My db-500s are in a 3.4 cubic foot box tuned to 32hz right now and they sound great. I can hear all of the double bass or triple bass in rock music, but I can also put in some Late Night Tip and set off car alarms It's all in the build and the tune.

Just about everybody wants something that sounds good and gets loud... you want ported. It is more difficult to build and requires more space, but is well worth it.