OldsBoomer Posted April 24, 2012 Report Share Posted April 24, 2012 Brain i said that was to much because it seems to be leaning more towards spl purpose then musical considering i dont know the op's eperience level i figured him having some more cone control would be a better route and still give him plenty of port to through some air. You do some great work so please correct me if im wrong so i can learn Quote Suburban Coming Soon Link to comment Share on other sites More sharing options...
bkolfo4 Posted April 25, 2012 Report Share Posted April 25, 2012 Two quick things to learn: Port area is not related to box volume. It is related to air velocity through the port which comes from cone area x excursion and tuning frequency. The idea of large port area is only for SPL is not correct. I think people have come to this conclusion based on large, short ports that are tuned to higher frequencies in SPL setups. In reality, ports are usually too small in car audio boxes due to the smaller sizes and the very long ports that would be required to get the desired tuning. Quote Current system: 1997 Blazer - (4) Customer Fi NEO subs with (8) American Bass Elite 2800.1s Previous systems: 2000 Suburban - (4) BTL 15's and (4) IA 40.1's = 157.7 dB at 37 Hz. 1992 Astro Van - (6) BTL 15's and (6) IA 40.1's = 159.7 dB at 43 Hz. Link to comment Share on other sites More sharing options...
Bigtoe-69 Posted April 25, 2012 Author Report Share Posted April 25, 2012 Two quick things to learn: Port area is not related to box volume. It is related to air velocity through the port which comes from cone area x excursion and tuning frequency. The idea of large port area is only for SPL is not correct. I think people have come to this conclusion based on large, short ports that are tuned to higher frequencies in SPL setups. In reality, ports are usually too small in car audio boxes due to the smaller sizes and the very long ports that would be required to get the desired tuning. So do you think I should shrink the port size down some or leave it alone? I mean the mayhems move a ton of air and are bad ass subwoofers! Im more looking along the lines of doing some sweet hair tricks with it just tryin to get a box that sounds good for daily and that will move air for fun like hair tricks and what not Quote Link to comment Share on other sites More sharing options...
bkolfo4 Posted April 25, 2012 Report Share Posted April 25, 2012 (edited) It does not have to be quite that big if you want to do around 160 sqin and drop the tuning to down around 34 Hz. Edited April 25, 2012 by bkolfo4 Quote Current system: 1997 Blazer - (4) Customer Fi NEO subs with (8) American Bass Elite 2800.1s Previous systems: 2000 Suburban - (4) BTL 15's and (4) IA 40.1's = 157.7 dB at 37 Hz. 1992 Astro Van - (6) BTL 15's and (6) IA 40.1's = 159.7 dB at 43 Hz. Link to comment Share on other sites More sharing options...
OldsBoomer Posted April 25, 2012 Report Share Posted April 25, 2012 WWhen i do my port area i do it according to cone area, i just said per cube to make it more simple i want to work out a equation that helps with port area relating it to cone area excursion and motor force Quote Suburban Coming Soon Link to comment Share on other sites More sharing options...
Bigtoe-69 Posted April 25, 2012 Author Report Share Posted April 25, 2012 It does not have to be quite that big if you want to do around 160 sqin and drop the tuning to down around 34 Hz. The box I'm working on is going in a ford ranger in the exteded cab portion of the truck. I'm hoping to get some fun hair tricks with the two of them...you guys think that they would do that Quote Link to comment Share on other sites More sharing options...
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