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IA DP 15 vs FI SP4 15???
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<blockquote data-quote="Papermaker85" data-source="post: 8475696" data-attributes="member: 572595"><p>truth be told the SP4 is a high excursion high low frequency efficiency woofer. typically they are at home in larger lower tuned boxes and do very nicely in larger cabins output wise.</p><p></p><p>but you can do an over-damped alignment to offset the efficiency for wider bandwidth and high frequency extension. but you loose a bit of output in the process.</p><p></p><p>using hte smaller box increases high frequency efficiency and using a very large port will lower the acoustic impedance to maximize the efficiency. just like anything there is diminishing returns.</p><p></p><p>if you want to be be instantly louder tune higher. if your using 4.25 tune to 40 hz. i know it sounds way to high but trust me it will get down to 30 hz..</p></blockquote><p></p>
[QUOTE="Papermaker85, post: 8475696, member: 572595"] truth be told the SP4 is a high excursion high low frequency efficiency woofer. typically they are at home in larger lower tuned boxes and do very nicely in larger cabins output wise. but you can do an over-damped alignment to offset the efficiency for wider bandwidth and high frequency extension. but you loose a bit of output in the process. using hte smaller box increases high frequency efficiency and using a very large port will lower the acoustic impedance to maximize the efficiency. just like anything there is diminishing returns. if you want to be be instantly louder tune higher. if your using 4.25 tune to 40 hz. i know it sounds way to high but trust me it will get down to 30 hz.. [/QUOTE]
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IA DP 15 vs FI SP4 15???
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