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How many cu feet and what tuning point?
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<blockquote data-quote="hispls" data-source="post: 8757077" data-attributes="member: 614752"><p>Yes. Bear in mind your port doesn't stop playing the instant you get below tuning so if you tune to 37hz you should be able to safely play down to 30-32 (give or take). Yes, you will want it to play strong from 40-60hz if you like some rock (drums, bass guitar, etc.) even old rap music mostly happens around 50-55hz range. </p><p></p><p>I would also encourage you to try using round port. That will be the easiest way to test different tuning by adjusting the length of the port (shorter will tune higher). Start at 32hz tuning, play a variety of songs, cut an inch or two off the length of the port and test the same songs. You should quickly get an idea of how the box/sub/tuning reacts with the acoustics of your car, then you can go about making the port permanent and secure. You can use large PVC pipe or even cardboard construction tube (used for pouring round concrete foundations). 8" round should be great for 4 cubic foot box but 6" (flared would be best) would likely be OK. You may need to compromise on port diameter to fit the port in the box. DO NOT crowd the port! The inside opening of the port should be at least 1 port width away from the wall behind it and also the mouth of the port should be one port width away from any wall or obstruction in the vehicle. You might get away with crowding the port and have good results but it will not perform as predicted if you do.</p></blockquote><p></p>
[QUOTE="hispls, post: 8757077, member: 614752"] Yes. Bear in mind your port doesn't stop playing the instant you get below tuning so if you tune to 37hz you should be able to safely play down to 30-32 (give or take). Yes, you will want it to play strong from 40-60hz if you like some rock (drums, bass guitar, etc.) even old rap music mostly happens around 50-55hz range. I would also encourage you to try using round port. That will be the easiest way to test different tuning by adjusting the length of the port (shorter will tune higher). Start at 32hz tuning, play a variety of songs, cut an inch or two off the length of the port and test the same songs. You should quickly get an idea of how the box/sub/tuning reacts with the acoustics of your car, then you can go about making the port permanent and secure. You can use large PVC pipe or even cardboard construction tube (used for pouring round concrete foundations). 8" round should be great for 4 cubic foot box but 6" (flared would be best) would likely be OK. You may need to compromise on port diameter to fit the port in the box. DO NOT crowd the port! The inside opening of the port should be at least 1 port width away from the wall behind it and also the mouth of the port should be one port width away from any wall or obstruction in the vehicle. You might get away with crowding the port and have good results but it will not perform as predicted if you do. [/QUOTE]
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How many cu feet and what tuning point?
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