Joe X Posted June 12, 2012 Report Share Posted June 12, 2012 You need to measure the port length from the external end to the internal end along the center line and measure the cross sectional area (width and height) with that information you can then get the tuning frequency. Wait what...? The dimensions i gave are pretty much all you need because they are the same height as the box. From the figure you can know the cross-sectional area dimensions but not the length of the port, if it turns you need to measure along the center line (half the width) from the external end to the internal. Quote Link to comment Share on other sites More sharing options...
parker6594 Posted June 13, 2012 Author Report Share Posted June 13, 2012 You need to measure the port length from the external end to the internal end along the center line and measure the cross sectional area (width and height) with that information you can then get the tuning frequency. Wait what...? The dimensions i gave are pretty much all you need because they are the same height as the box. From the figure you can know the cross-sectional area dimensions but not the length of the port, if it turns you need to measure along the center line (half the width) from the external end to the internal. "The port is just a 13" wall on either side, then there's a 4" extension that goes in like on any normal box." It is just a normal port that goes back, then in. 13" back, then the little extensions on either side are 4". Just like in the picture. Quote Link to comment Share on other sites More sharing options...
ALPINE408 Posted June 13, 2012 Report Share Posted June 13, 2012 did you down load torres box calculator? its not prefect but easy to use you put in box dimensions port length bam tuning and airspace Quote Have you ever had your woofers blown? Link to comment Share on other sites More sharing options...
Joe X Posted June 13, 2012 Report Share Posted June 13, 2012 You need to measure the port length from the external end to the internal end along the center line and measure the cross sectional area (width and height) with that information you can then get the tuning frequency. Wait what...? The dimensions i gave are pretty much all you need because they are the same height as the box. From the figure you can know the cross-sectional area dimensions but not the length of the port, if it turns you need to measure along the center line (half the width) from the external end to the internal. "The port is just a 13" wall on either side, then there's a 4" extension that goes in like on any normal box." It is just a normal port that goes back, then in. 13" back, then the little extensions on either side are 4". Just like in the picture. 44Hz and 1 cube per side with the infos you provide. Quote Link to comment Share on other sites More sharing options...
AgentTyler Posted June 13, 2012 Report Share Posted June 13, 2012 Aren't most prefab boxes tuned to around 45hz? Quote 1998 Ford Contour Head Unit: Pioneer DEH-P8400BH Front/Rear Door Speakers: Alpine SPR-68 (Type-R 6x8) Door Speaker Amplifer: Kicker ZX650.4 Subwoofers: 1 SSA Icon 12" Amplifier: MB.Quart 1.1500d Second Battery: XS Power D925 Link to comment Share on other sites More sharing options...
parker6594 Posted June 13, 2012 Author Report Share Posted June 13, 2012 Aren't most prefab boxes tuned to around 45hz? It probably is prefab. Got it on craigslist and it came with that box. Just put in this new box i made at 34.5hz and it BUMPS. Loving it. Quote Link to comment Share on other sites More sharing options...
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