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<blockquote data-quote="shredder1" data-source="post: 8904468" data-attributes="member: 658920">I&#039;d default to a higher tuning myself honestly. Tune 30hz and let her rip. 32hz is a fine tuning btw for something like a DB 9515. I&#039;d shorten the ports a little and find the peak after.Ultra low tuning &quot;feels loud&quot; but won&#039;t hit the number user envisioned in my exp. 149db at 30hz is awesome so don&#039;t misunderstand me but 151+ at 35hz is a step above, especially to people who demo the thing. I&#039;ve competed against many who hit 148db at 30hz... awesome #&#039;s if you ask me. But they always walk away scratching their head.Then I demo 150+ peaking 47hz with a 152+ score and see eyes open.4-5hz at that level is a marked difference... loud becomes violent...I&#039;d set goals realistically if tuned 28hz with lowish port area. In my experience no compromises gets that # especially with capable subs. I still predict 150+ at frequency but even better #&#039;s can be achieved with a slightly higher tuning.My .02</blockquote>

[QUOTE="shredder1, post: 8904468, member: 658920"] I'd default to a higher tuning myself honestly. Tune 30hz and let her rip. 32hz is a fine tuning btw for something like a DB 9515. I'd shorten the ports a little and find the peak after. Ultra low tuning "feels loud" but won't hit the number user envisioned in my exp. 149db at 30hz is awesome so don't misunderstand me but 151+ at 35hz is a step above, especially to people who demo the thing. I've competed against many who hit 148db at 30hz... awesome #'s if you ask me. But they always walk away scratching their head. Then I demo 150+ peaking 47hz with a 152+ score and see eyes open. 4-5hz at that level is a marked difference... loud becomes violent... I'd set goals realistically if tuned 28hz with lowish port area. In my experience no compromises gets that # especially with capable subs. I still predict 150+ at frequency but even better #'s can be achieved with a slightly higher tuning. My .02 [/QUOTE]

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