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<blockquote data-quote="hispls" data-source="post: 8434445" data-attributes="member: 614752">How many subs have you built and pulled specs from?&nbsp; How many critically over damped neo motors?&nbsp;&nbsp; When dealing with a motor with as much force as that DD neo motor how much of the TSP&#039;s do you think are dependent on the stiffness of the suspension?&nbsp; I think you&#039;ll find that you&#039;ll wind up with relatively high FS and low Qts regardless of what you use for suspension, barring of course using a hugely sub optimal coil or simply mass loading the cone to try to trick it into doing something for which it isn&#039;t designed you&#039;re not going to force it to be a RE XXX or LMS 5400 which would actually give you high excursion, low distortion, and good output at and below 30hz while also maintaining some semblance of bandwidth above that frequency.What you&#039;re going to wind up with is a frequency response that looks like a two humped camel with a&nbsp; big peak at box tuning and another slightly smaller peak at cabin resonance.&nbsp;&nbsp; It&#039;ll sound absolutely awful trying to play actual music that involves any frequency in between.What you&#039;ll have is a woofer that may play loud at tuning if you tune low but will roll off sharply on either side of a narrow bandwidth.&nbsp;&nbsp; That&#039;s why the &quot;daily&quot; DD boxes tune @ 40hz.&nbsp; If you read the DD website they tell you that they design the subs around working well in that box.&nbsp;&nbsp; After you&#039;re done trying to Frank&#039;n&#039;stein that sub to do something for which it was never intended, then put it in the wrong box you really defeated the whole purpose of using that platform to begin with.I must say I&#039;m enraged that you&#039;re not just selling/trading those motors to someone who will actually use them correctly.&nbsp; It just seems like such a waste.</blockquote>

[QUOTE="hispls, post: 8434445, member: 614752"] How many subs have you built and pulled specs from? How many critically over damped neo motors? When dealing with a motor with as much force as that DD neo motor how much of the TSP's do you think are dependent on the stiffness of the suspension? I think you'll find that you'll wind up with relatively high FS and low Qts regardless of what you use for suspension, barring of course using a hugely sub optimal coil or simply mass loading the cone to try to trick it into doing something for which it isn't designed you're not going to force it to be a RE XXX or LMS 5400 which would actually give you high excursion, low distortion, and good output at and below 30hz while also maintaining some semblance of bandwidth above that frequency. What you're going to wind up with is a frequency response that looks like a two humped camel with a big peak at box tuning and another slightly smaller peak at cabin resonance. It'll sound absolutely awful trying to play actual music that involves any frequency in between. What you'll have is a woofer that may play loud at tuning if you tune low but will roll off sharply on either side of a narrow bandwidth. That's why the "daily" DD boxes tune @ 40hz. If you read the DD website they tell you that they design the subs around working well in that box. After you're done trying to Frank'n'stein that sub to do something for which it was never intended, then put it in the wrong box you really defeated the whole purpose of using that platform to begin with. I must say I'm enraged that you're not just selling/trading those motors to someone who will actually use them correctly. It just seems like such a waste. [/QUOTE]

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