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<blockquote data-quote="shizzzon" data-source="post: 7459047" data-attributes="member: 590338">What you have been told or how you are interpreting this &quot;advice&quot; is wrong.You are saying a 4th order bandpass is good because it will reach your ears but a normal 4th order will scatter everywhere and go out the windows?You need to do some more research on what you want and how you are going to get there.When you have a port forward firing in a wall, it&#039;s always best to have it, if optimal, on one side of the vehicle.Preferrably driver side.Your higher score will usually come from passenger side.If it&#039;s swapped, typical interference from the steering wheel can cause score to go down.Not all vehicles do that though but most do.It is typical the pressure will increase when the window\door that is on same side as port is open.IF pressure decreases when you do this, then you have displaced more volume in the vehicle than what is forward the B pillar.This is the actual goal when building a wall but not all walls will be able to do this based on goals.This is also why many vehicles into the 170s and higher need to be sealed to continue gaining pressure.</blockquote>

[QUOTE="shizzzon, post: 7459047, member: 590338"] What you have been told or how you are interpreting this "advice" is wrong. You are saying a 4th order bandpass is good because it will reach your ears but a normal 4th order will scatter everywhere and go out the windows? You need to do some more research on what you want and how you are going to get there. When you have a port forward firing in a wall, it's always best to have it, if optimal, on one side of the vehicle. Preferrably driver side. Your higher score will usually come from passenger side. If it's swapped, typical interference from the steering wheel can cause score to go down. Not all vehicles do that though but most do. It is typical the pressure will increase when the window\door that is on same side as port is open. IF pressure decreases when you do this, then you have displaced more volume in the vehicle than what is forward the B pillar. This is the actual goal when building a wall but not all walls will be able to do this based on goals. This is also why many vehicles into the 170s and higher need to be sealed to continue gaining pressure. [/QUOTE]

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