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Topic Review (Newest First)
02-28-2015 02:19 AM
KickinBlazer
Re: fourth order for 2 8s

well just try and make a 3:1 ratio to the size you need or have to fit and leave the ported side untuned (big hole) for port then find the impedance spike on a sweep or the peak hz and thats where you tune....if it peaks to high 55 to 60hz put some polyfill in sealed section that will lower the tune hz
02-28-2015 12:00 AM
Doaner07
fourth order for 2 8s

I got a pair of 8 inch subs from factory Sony systems in f150s. I want to build a fourth order for them. Sony seemed confused when I asked for ts specs. That being said I just want a general design. I can figure out dimensions,I just need an idea on volumes for sealed and ported. I also don't know what tuning to aim for on the ported side. All help is appreciated.

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