Ported or Sealed?
sinking steps rising eyes
Joined: Jun 2006
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From: South Dakota
/\ agreeded. If the ported box is built properly(tuned correctly and right volume), which really isn't that hard to do, then these so called "wrong notes" are produced when the amp sends a bad signal or the sub is being overpowered. Although, i would find it to be true, that, these wrong notes would be easier to pick out in a ported box then a sealed.
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Joined: Jun 2006
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lol, this thread has totally changed topics. oh well. a sub being overpowered will not cause wrong notes. It will however smell pretty bad. It should play right up until it blows... You'll hear something like two plastic pieces being slapped together and then the cone will seize. Then the normal blue smoke will come out if it’s a ported box. I have never seen a sub get blown in a sealed box… which now I’m interested in doing so. Think I might have to try it!
Joined: Jun 2001
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From: Lll
lol, this thread has totally changed topics. oh well. a sub being overpowered will not cause wrong notes. It will however smell pretty bad. It should play right up until it blows... You'll hear something like two plastic pieces being slapped together and then the cone will seize. Then the normal blue smoke will come out if it’s a ported box. I have never seen a sub get blown in a sealed box… which now I’m interested in doing so. Think I might have to try it!
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the last sub i watched blow was a 15 inch kicker comp vx. they threw a 20hz square wave tone at it, with over 5000watts pushing it. clipped it like no other. the sub lasted a lot longer than i figured it would.. somewhere around 30 sec. I believe a hole blew in the cone at first, then it got MUCH louder for about 5 seconds.. then finally it seized. They were messuring SPL during it, and when the hole blew in the cone, it went up over 5 dB. That was a good day. I got to sit in the car while it burped over 155 dB. With hearing protection of course. If you ever have the chance to do that, you should take it! It was kick-ass!
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Joined: Aug 2004
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lol, this thread has totally changed topics. oh well. a sub being overpowered will not cause wrong notes. It will however smell pretty bad. It should play right up until it blows... You'll hear something like two plastic pieces being slapped together and then the cone will seize. Then the normal blue smoke will come out if it’s a ported box. I have never seen a sub get blown in a sealed box… which now I’m interested in doing so. Think I might have to try it!
Integra Owner No. 122,019
Joined: Dec 2004
Posts: 131
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From: Saint louis, MO
First off I think some of you have it backwords.
1) A Ported box takes less power to make the same volume as a sealed box. (hense louder)
2) The same sub in a ported box requires a larger volume. Partially to make up for the port.
3) A sealed box is heard farther away. Sealed box can be projected where a ported box uses the volume and accoustics to produce the low frequency. Open the trunk with a ported box and some bass goes away. Doesn't seem as loud.
4) Sealed boxes are more "accurate" than a Ported box. Mainly on the basis of reproduction. Although, ported boxes have have a higher transient response (It can recover faster, therefore can reproduce very quick repetative notes). Sealed boxes are punchier but I would not say tighter bass.
5) Ported boxes can produce slighly lower frequency than sealed.
Overall each sub has its own characteristics. Most subs work best in the biggest box you can make for a trunk. So my advice is to buid the box, and then if the sound does not suit you and you want to port it, you can do so then with the proper measurements of ft3. I am waiting for someone to design a closable port to make a sealed or ported on the fly.
I use WinIS Beta.
Or the directions from the manufacturer.
Parts Express is excelent for any parts that you may need.
1) A Ported box takes less power to make the same volume as a sealed box. (hense louder)
2) The same sub in a ported box requires a larger volume. Partially to make up for the port.
3) A sealed box is heard farther away. Sealed box can be projected where a ported box uses the volume and accoustics to produce the low frequency. Open the trunk with a ported box and some bass goes away. Doesn't seem as loud.
4) Sealed boxes are more "accurate" than a Ported box. Mainly on the basis of reproduction. Although, ported boxes have have a higher transient response (It can recover faster, therefore can reproduce very quick repetative notes). Sealed boxes are punchier but I would not say tighter bass.
5) Ported boxes can produce slighly lower frequency than sealed.
Overall each sub has its own characteristics. Most subs work best in the biggest box you can make for a trunk. So my advice is to buid the box, and then if the sound does not suit you and you want to port it, you can do so then with the proper measurements of ft3. I am waiting for someone to design a closable port to make a sealed or ported on the fly.
I use WinIS Beta.
Or the directions from the manufacturer.
Parts Express is excelent for any parts that you may need.
Last edited by meangreen96; Sep 23, 2006 at 05:56 PM. Reason: Corrections per below. I retarded out. Havn't built boxes in a long time. My appologies. I have brushed back up.
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Joined: Mar 2006
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First off I think some of you have it backwords.
1) A sealed box takes less power to make the same volume as a ported box. (hense louder)
2) The same sub in a ported box requires a larger volume. Partially to make up for the port.
3) A sealed box is heard farther away. Hense competition subs are all sealed for SPL reasons. Sealed box can be projected where a ported box uses the volume and accoustics to produce the low frequency. Open the trunk with a ported box and some bass goes away. Doesn't seem as loud.
4) Ported boxes are more "accurate" than a sealed box. They have higher transient response(look it up). Therefore better for natural bass such as a bass guitar, or drum ie rock music.
5) Ported boxes can produce slighly lower frequency than sealed.
If you want a natural bass that is clean and accurate and not looking to thump out the neighborhood. Go with a properly built ported Box(not store bought generic).
If you want hard hitting, slap yo mamma bass, Go with sealed.
I use WinIS Beta.
Or the directions from the manufacturer.
Use parts express for all that you may need.
1) A sealed box takes less power to make the same volume as a ported box. (hense louder)
2) The same sub in a ported box requires a larger volume. Partially to make up for the port.
3) A sealed box is heard farther away. Hense competition subs are all sealed for SPL reasons. Sealed box can be projected where a ported box uses the volume and accoustics to produce the low frequency. Open the trunk with a ported box and some bass goes away. Doesn't seem as loud.
4) Ported boxes are more "accurate" than a sealed box. They have higher transient response(look it up). Therefore better for natural bass such as a bass guitar, or drum ie rock music.
5) Ported boxes can produce slighly lower frequency than sealed.
If you want a natural bass that is clean and accurate and not looking to thump out the neighborhood. Go with a properly built ported Box(not store bought generic).
If you want hard hitting, slap yo mamma bass, Go with sealed.
I use WinIS Beta.
Or the directions from the manufacturer.
Use parts express for all that you may need.
I dont know very many 1st place bass competitors(SPL) that uses sealed enclosures. For you to say something like that is pretty much complete bullshit. Now if you are talking about sq comps, then that may be a different story.
Ported boxes are not more accurate then sealed boxes.