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<blockquote data-quote="Jspawn80" data-source="post: 8521275" data-attributes="member: 670286">I&#039;ve looked on alot a places online that say its not a good idea to run the sa8&#039;s ported and sundown doesn&#039;t even have a recommended box for the subwoofer sealed.Also i dont really understand the way flared ports work. When i put my box info into winisd with a 4&quot; port thats 10 inches long, my tuning is at 38hz and my vent mach (which from what i understand has to do with the speed of the air traveling through the port) is a 0.21. And from what i&#039;ve read it has to be below 0.16.Now if i put in a flared port thats the same length will it reduce the vent mach or will it just keep the port from making noise?Also while messing around in winisd and using the same 4&quot;diameter port, the only way for me to reduce the vent mach is to raise the tuning. Which reduces my vent length and brings it down to a port thats 4&quot; long but my tuning is ridiculously high a 52hz</blockquote>

[QUOTE="Jspawn80, post: 8521275, member: 670286"] I've looked on alot a places online that say its not a good idea to run the sa8's ported and sundown doesn't even have a recommended box for the subwoofer sealed. Also i dont really understand the way flared ports work. When i put my box info into winisd with a 4" port thats 10 inches long, my tuning is at 38hz and my vent mach (which from what i understand has to do with the speed of the air traveling through the port) is a 0.21. And from what i've read it has to be below 0.16. Now if i put in a flared port thats the same length will it reduce the vent mach or will it just keep the port from making noise? Also while messing around in winisd and using the same 4"diameter port, the only way for me to reduce the vent mach is to raise the tuning. Which reduces my vent length and brings it down to a port thats 4" long but my tuning is ridiculously high a 52hz [/QUOTE]

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