1point21gigawatts Posted August 6, 2020 Report Share Posted August 6, 2020 Move the subwoofers and port like this. Let me figure port width and height and you would have to figure the length. “How can we help you?” “And don’t forget to tell them that the customer isn’t always right.” Link to comment Share on other sites More sharing options...
1point21gigawatts Posted August 6, 2020 Report Share Posted August 6, 2020 3.5 cu. ft. net volume. Port- height(13.25”), width(4”). Port area 53 square inches. 15.14 square inches of port area per cubic foot. That port is designed to fit where I illustrated in the pic I posted. “How can we help you?” “And don’t forget to tell them that the customer isn’t always right.” Link to comment Share on other sites More sharing options...
1point21gigawatts Posted August 6, 2020 Report Share Posted August 6, 2020 If you have trouble tuning to 30hz with a 4” port width and the port length is too long, which is kind of what I’m thinking is gonna happen, then you can decrease the port width as far as 3.25”. If a width of 4” doesn’t work with the calculations then try 3.75” and the 3.625” and then 3.5” and then 3.375” and worse case scenario 3.25”. Each measurement wouldn’t have port noise on that amount of rms on an enclosure tuned to 30hz. But any smaller than 3.25” port width would go below 12 square inches of port area per cubic foot. The formula for square inches per cubic foot on a slot port enclosure are 12” up to 16”. On aero port enclosures, 8” up to 12”. Plus anything smaller than 3.25” in port width could have port noise because of high port velocity. “How can we help you?” “And don’t forget to tell them that the customer isn’t always right.” Link to comment Share on other sites More sharing options...
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