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Mastering 4th Order Bandpass Subwoofer Enclosures: A Step-by-Step GuideReady to dive into the world of 4th order bandpass subwoofer enclosures? Let’s break it down and make it easy for you to build those booming, bass-heavy setups.1) Understanding Subwoofer Basics: Selecting the Right BoxHere’s how to choose the best sub for your enclosure: FS/QES Ratio: Divide FS by QES. A ratio of 45 or below favors a sealed box sub, while 55 and above suggests a ported box sub. Sealed box subs are perfect fo …