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<blockquote data-quote="SubieSPL_Maniac" data-source="post: 8307007" data-attributes="member: 648823">Ok so I&#039;m planning on building my first 4th order band pass. It&#039;s going to be in a trunk with the port coming through the rear deck. I&#039;ve done some research but I&#039;m open for any suggestions and could also be completely wrong.I am getting a 12&quot; soundqubed HDS3 for my brother.. the sealed section is going be 0.75 and the ported section about 1.5 without the port. The sub will be inverted (the magnet and basket in the ported section).My plan is to create a square or rectangular port depending on the tuning! I will probably make it removable so I can change out ports.This is where I get confused, I read the higher I tune the port, the lower it will play?!? can anyone help me with this. AND should the port be wider for more air movement? I want it to play well at about 32hz. Any suggestions are welcome!</blockquote>

[QUOTE="SubieSPL_Maniac, post: 8307007, member: 648823"] Ok so I'm planning on building my first 4th order band pass. It's going to be in a trunk with the port coming through the rear deck. I've done some research but I'm open for any suggestions and could also be completely wrong. I am getting a 12" soundqubed HDS3 for my brother.. the sealed section is going be 0.75 and the ported section about 1.5 without the port. The sub will be inverted (the magnet and basket in the ported section). My plan is to create a square or rectangular port depending on the tuning! I will probably make it removable so I can change out ports. This is where I get confused, I read the higher I tune the port, the lower it will play?!? can anyone help me with this. AND should the port be wider for more air movement? I want it to play well at about 32hz. Any suggestions are welcome! [/QUOTE]

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