ported box and polyfill?

[Slaymon 10+ year member]

Does polyfill work with ported boxes as well? If you add some does it change what the port is tuned to? If it does, does it go up or down? I don't any more room for a bigger box so I can't make a new one.

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[LoneRanger 10+ year member]

Does polyfill work with ported boxes as well? If you add some does it change what the port is tuned to? If it does, does it go up or down? I don't any more room for a bigger box so I can't make a new one.

polyfill slows down the waves inside the box and will most likely make your tuning frequency go down. its only good for a few hz in a sealed box, so it's probably not going to help your ported box noticably. Best thing to do is get a bag of polyfill and find out for yourself.