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<blockquote data-quote="DFW40" data-source="post: 600188" data-attributes="member: 556468"><p>You need the long excursion to play loud on the deepest of notes. These notes or tones are not the tones used in the spl burp world. They ususally are above 45 hz and even 60 hz. That is why you can have an spl sub without 32mm of xmax ie the L7. That long throw is perfect for the daily driver that wants the SQL setup. To play a 30 hz tone loudly you need long excursion or several woofers with less excursion.</p><p></p><p>JL also does not want everyday people using their subs in the true SPL setup due to the inexperienced folks that would blow the subs and want thier warranty to cover it. No company wants 16 year olds hooking their 10 inch W3's to a 3000 watt amp to see how loud it gets on their Radio Shack meter.</p></blockquote><p></p>
[QUOTE="DFW40, post: 600188, member: 556468"] You need the long excursion to play loud on the deepest of notes. These notes or tones are not the tones used in the spl burp world. They ususally are above 45 hz and even 60 hz. That is why you can have an spl sub without 32mm of xmax ie the L7. That long throw is perfect for the daily driver that wants the SQL setup. To play a 30 hz tone loudly you need long excursion or several woofers with less excursion. JL also does not want everyday people using their subs in the true SPL setup due to the inexperienced folks that would blow the subs and want thier warranty to cover it. No company wants 16 year olds hooking their 10 inch W3's to a 3000 watt amp to see how loud it gets on their Radio Shack meter. [/QUOTE]
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