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Message: <blockquote data-quote="RSDXzec" data-source="post: 7792524" data-attributes="member: 638347">yeah since my box will have 3 chambers I'll be filling one up with polyfill and comparing it side by side to one without. I just wanted to know if anyone here noticed it lowered their tuning.My way of testing tuning is to use some test tones and see whereabouts I get the least excursion. My last box was tuned to 25hz and it also had the least excursion at that frequency. But I'm not testing polyfill in that enclosure because it's bigger (2.2cf) so polyfill would be less effective therefore making it harder to lower the tuning frequency of it, which isn't something I'd like to do either.However in my current situation due to space limitations I really think it could help, when you tried it in your ported enclosure did you test to find the tuning frequency after? did you notice it sounded any different?</blockquote>

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