Posted November 3, 201410 yr Okay, so i am wanting to build a box for my two Sa-12s.The width of the box is 40"The height is 13"The depth is 16"The total box volume without subwoofer displacement or port displacement is 3.709. Im trying to get a frequency of 35hz. I want to go with an aero port but im not really sure what would be a good size? I did the online calculators and for a 6" aero it would need to be about 12" long. My only concern is if this is going to be enough port area for two Sa-12s? If its not what could i do to get a good port area for theses subs?
November 3, 201410 yr What amp are you using? 6.0" diameter = 28in^2 port area (not taking into account flaring properties)With 1000watts, 35hz tuning, that puts you near 25m/s port speed, that's plenty good and we haven't even considered the advantages of the flared ports. Green is 35hz, black is 37hz. The above is from: http://box.bitpusher.in/enclosure/ using T/S specs here: http://www.sundownaudio.com/index.php/products/subwoofers/item/sa-series.html I should note that I didn't calculate your net enclosure volume after the port displacement but this is something you want to do as not accounting for port displacement will raise tuning and change numbers a bit. Edited November 3, 201410 yr by ssh
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