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<blockquote data-quote="nosaj070" data-source="post: 3162898" data-attributes="member: 546955">Alright, well first off designing a snailshell and a folded horn is substantially more complex than a basic ported box, I think you should learn the basics then work your way up to the extremely advanced boxes for two reasons. First they take a lot of trial and error. Second, very few people on this board could really help you with something that advanced, I&#039;d be surprised if more than ten or so regulars could actually design a snailshell or folded horn.Port area affects a few things, but the most obvious/annoying is port noise due to high velocities in a small port. As far as ideal size goes, its typically 15 sqin per cubic foot of enclosure volume.Yes a ported box can get too big.Yes you are risking severe damage to your subs by playing them below the tuning frequency, especially that far below tuning. In a ported enclosure below tuning there the enclosure does nothing to dampen the suspension of the driver, and you could rip it to shreds, especially if you are clipping it at 15hz. On top of that, you can&#039;t even hear 15hz (Unless you are special) so as far as music goes thats obviously not a realistic frequency.If you search around this forum and google you will find all the answers to your questions and then some. JL&#039;s site has some good info do that is easy to understand.Designing a ported box is simple, once you know the characteristics of the driver you can model it and know exactly what you need in a couple of minutes.</blockquote>

[QUOTE="nosaj070, post: 3162898, member: 546955"] Alright, well first off designing a snailshell and a folded horn is substantially more complex than a basic ported box, I think you should learn the basics then work your way up to the extremely advanced boxes for two reasons. First they take a lot of trial and error. Second, very few people on this board could really help you with something that advanced, I'd be surprised if more than ten or so regulars could actually design a snailshell or folded horn. Port area affects a few things, but the most obvious/annoying is port noise due to high velocities in a small port. As far as ideal size goes, its typically 15 sqin per cubic foot of enclosure volume. Yes a ported box can get too big. Yes you are risking severe damage to your subs by playing them below the tuning frequency, especially that far below tuning. In a ported enclosure below tuning there the enclosure does nothing to dampen the suspension of the driver, and you could rip it to shreds, especially if you are clipping it at 15hz. On top of that, you can't even hear 15hz (Unless you are special) so as far as music goes thats obviously not a realistic frequency. If you search around this forum and google you will find all the answers to your questions and then some. JL's site has some good info do that is easy to understand. Designing a ported box is simple, once you know the characteristics of the driver you can model it and know exactly what you need in a couple of minutes. [/QUOTE]

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