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<blockquote data-quote="brown7348" data-source="post: 7845199" data-attributes="member: 641704"><p>Ok so im about to build a new box for the sa8, have been sitting over the steering wheel for months now, i have a single cab chevy with the buckets and non moving console, the box i took out was a tad over a cube, with a 3in pvc port, sounded ok but sometimes heard the spider hitting the cone, so i guess im getting over excursion since the box is too big. Now to the new box, its gonna be 12&#039;&#039;h 8&#039;&#039;deep, and 24&#039;&#039; wide, this gives me 0.89ft3 before any displacement, couple questions on the port though, im using torres calculator and when i try to use the round port feature with a 4in port which most of will be external it tells me i need a really crazy length of port and the volume drops everytime i add a few inches of length almost as if it thinks the port is just snaking around inside the box. also need to know the displacement of the sub.. Any help here, this port stuff is killing me unless ill be fine using a 3in port again but dont want to build another box and still have over excursion issues..</p></blockquote><p></p>

[QUOTE="brown7348, post: 7845199, member: 641704"] Ok so im about to build a new box for the sa8, have been sitting over the steering wheel for months now, i have a single cab chevy with the buckets and non moving console, the box i took out was a tad over a cube, with a 3in pvc port, sounded ok but sometimes heard the spider hitting the cone, so i guess im getting over excursion since the box is too big. Now to the new box, its gonna be 12''h 8''deep, and 24'' wide, this gives me 0.89ft3 before any displacement, couple questions on the port though, im using torres calculator and when i try to use the round port feature with a 4in port which most of will be external it tells me i need a really crazy length of port and the volume drops everytime i add a few inches of length almost as if it thinks the port is just snaking around inside the box. also need to know the displacement of the sub.. Any help here, this port stuff is killing me unless ill be fine using a 3in port again but dont want to build another box and still have over excursion issues.. [/QUOTE]

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