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Message: <blockquote data-quote="helotaxi" data-source="post: 2624650" data-attributes="member: 550915">Order has to do with rate of rolloff, not frequency.  There are a lot of things that can be done with bandpass boxes and the overwhelming majority do not have a flat response within the passband but rather accentuate one frequency.  Those that do have a really flat frequency response are either really efficient with a really narrow passband (still effectively accentuating a small frequency range) or are fairly inefficient but have a broader bassband.The hpf and lpf referenced in the form are high pass *frequency* and low pass *frequency* not filter.  The hpf should be the bottom of the passband and the lpf should be the top.</blockquote>

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