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Message: <blockquote data-quote="Jeffdachef" data-source="post: 8588387" data-attributes="member: 650438"><p>you have to tune high to the resonant sealed resonant frequency for best bandwidth and output which is very high like in the upper 40s and 50s. So thats the only way to get a high enough tuning. Plus you start higher and shrink via experimentation to find that perfect sweet spot.    To do a 4th order you better d@mn well have some RTA/SPL metering equipment or else its doomed to be mediocre or fail.</p></blockquote><p></p>

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