Audio Customs Posted May 28, 2013 Report Share Posted May 28, 2013 ok the ? by splitting up your port i did something different i didn't have the surface area to do a full port so i had to split it up into 2 my port was 13x13x14 so i did 2 6.5x6.5x 14 i tried to keep the tuning the same by splitting up your port will it be less area per cubic foot ? will the tuning be different ? this is something that i never did before i did well on the meter and plays good on music my box dims are 32x40x20 sub displacement is .48 for the 3 15's cone area http://www.stevemeadedesigns.com/board/topic/6819-cone-area-of-a-subwoofer/ 4th order band pass basic http://www.stevemeadedesigns.com/board/topic/126478-basics-of-a-4th-order-bandpass-enclosure/ this is Torres box calculator My GUI Box Tuning Calculator Download - Updated 8/18/2012 Link to comment Share on other sites More sharing options...
Joe X Posted May 28, 2013 Report Share Posted May 28, 2013 13x13 = 169 sqin 6.5 x 6.5 = 42.25 x 2 = 84.5 sqin You did exactly half the port area intended. 42.25 square is equivalent to a 7.34" diameter round port so: So you are tuned to 34.3 Hz with 84.5 square inches so 8.45 sq in / ft^3 which is low. Link to comment Share on other sites More sharing options...
Joe X Posted May 28, 2013 Report Share Posted May 28, 2013 Also your ports have no common walls, so that field needs a zero or leave blank. Link to comment Share on other sites More sharing options...
Audio Customs Posted May 28, 2013 Author Report Share Posted May 28, 2013 so i was ok then i never built one before i thought that if i spit it up i should keep the same port area up its something new for me if i did it wrong please let me know i still plane to build a new box soon cone area http://www.stevemeadedesigns.com/board/topic/6819-cone-area-of-a-subwoofer/ 4th order band pass basic http://www.stevemeadedesigns.com/board/topic/126478-basics-of-a-4th-order-bandpass-enclosure/ this is Torres box calculator My GUI Box Tuning Calculator Download - Updated 8/18/2012 Link to comment Share on other sites More sharing options...
Audio Customs Posted May 28, 2013 Author Report Share Posted May 28, 2013 ok thanks for the info cone area http://www.stevemeadedesigns.com/board/topic/6819-cone-area-of-a-subwoofer/ 4th order band pass basic http://www.stevemeadedesigns.com/board/topic/126478-basics-of-a-4th-order-bandpass-enclosure/ this is Torres box calculator My GUI Box Tuning Calculator Download - Updated 8/18/2012 Link to comment Share on other sites More sharing options...
Joe X Posted May 28, 2013 Report Share Posted May 28, 2013 Your two ports needed to be 9 1/4 x 9 1/4 each to get around the 169 square inches of total port area you wanted. Link to comment Share on other sites More sharing options...
Audio Customs Posted May 28, 2013 Author Report Share Posted May 28, 2013 ok hey thanks for the help cone area http://www.stevemeadedesigns.com/board/topic/6819-cone-area-of-a-subwoofer/ 4th order band pass basic http://www.stevemeadedesigns.com/board/topic/126478-basics-of-a-4th-order-bandpass-enclosure/ this is Torres box calculator My GUI Box Tuning Calculator Download - Updated 8/18/2012 Link to comment Share on other sites More sharing options...
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