what is better a sealed or ported box and what are the differences besides ported has a vent?

Answer 1

The port in the ported box isn't just a vent; its size and shape are calculated to "tune" it to a particular frequency. When the sub is playing, the air inside the port resonates at the tuned frequency, which adds to the sound. This means the ported box will play louder than the sealed box for a certain range of bass. However, the roll-off of the deep bass is steeper than for a sealed box, which means a sealed box may be able to play some very low frequencies that a ported box cannot. These frequencies aren't used very much in music, however, so you're not usually going to miss out on any sound with a ported box.

Sealed box systems are somewhat forgiving of air-space differences, which means that there's a good chance the subwoofer will produce sound even if it's not in a perfectly-sized box. However, with a ported box, you have stay closer to the sub's recommended box volume if you want good sound. If you're buying a pre-fabricated box for your sub, it's safer to stick with a sealed box; a pre-fabricated ported box is less likely to match up well with your subwoofer.

If you have a ported box, and you try to play bass frequencies below the port's "tuned" frequency, you run a serious risk of damaging your subwoofer. A sub in a ported box loses the "air cushion" benefits when the bass is too low, so if you're using a ported box, you need to use a sub-sonic or infra-sonic filter to keep the deepest bass from reaching the sub. Some amplifiers have sub-sonic filters built in, some do not. Sealed boxes do not have this problem.

To sum up, if you're building your own box or having one built, then a ported box can give you louder bass if you use it correctly. If you're just going to the store and buying a box, pick a sealed box.

Answer 2

I have always felt like sealed enclosures are more accurate but less smooth. If you listen to a lot of metal with double bass drums, then ported does not react quick enough in my option. If you listen to low, smooth bass tones, often times a ported box will be better AND you can tune the ports to how you like by the diameter and length of the ports. In the end, I just love a good, sealed box for sure.

Answer 3

Sealed= Best SQ, more power needed, less space.
Ported= Less SQ, louder, less power needed, more space needed.

Either way, make sure the internal volume matches what the manufacturer recommends for that specific sub. They'll have a recommended volume for ported, and another for sealed. It is okay to make them smaller or larger, just don't go past 10% of what is recommended.

Ported boxes require tuning. Use this guide to get the most output at the freq. you desire:
http://www.the12volt.com/caraudio/boxcalcs.asp#por

Have Fun!

Answer 4

Depends on what you are looking for your drive to do. A sealed enclosure will create better cone control so the response will be quick and you can use less power. A ported enclosure uses both the front and back wave of the sub to create more output, about 3db up +/- depends on the vehicle. you will want more power though, that is what you will use to control the cone, unlike a sealed enclosure. If you listen to a lot of rock and don't mind losing the extra output go sealed, if you listen rap go ported. If you want the best of both worlds go ported with a ton of power.

Answer 5

ported boxes should be bigger and give u a more deeper bass more so for that boom wher as sealed is definatly more for sound quality

Answer 6

changes the way the sub hits

Answer 7

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