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<blockquote data-quote="skateboardkid" data-source="post: 3731707" data-attributes="member: 582399">If a solobaric 8&quot;is not enough output you might have to move up to a 10&quot; subwoofer to get the desired output.Also to look at are IDQ 10&quot; it performs well&nbsp; in .65 and the sub takes .05 displacement.&nbsp; Does not need a ton of power and is Sq based.&nbsp; Model it up in the .85 you have to work with and it shoudl have decent extension.All of the boston pro 10&quot; are .5cF recomended sealed enclosure size check them out for sure.if you can fit a 10&quot; you are gonna have considerable more output then any 8&quot; of comparable quality.About the Qtc of .9 should not adversly affect performance.&nbsp; will have more of a peak and roll off faster though the transfer function of the car may smooth this out.read about all the theil small parameters here<a href="http://www.members.shaw.ca/LoudSpeakerBuilder.ca/thiele-small.html" target="_blank">http://www.members.shaw.ca/LoudSpeakerBuilder.ca/thiele-small.html</a>they have a graph similar to your with same driver different size boxes and they show how the qtc affects the out put of said driver.</blockquote>

[QUOTE="skateboardkid, post: 3731707, member: 582399"] If a solobaric 8"is not enough output you might have to move up to a 10" subwoofer to get the desired output. Also to look at are IDQ 10" it performs well in .65 and the sub takes .05 displacement. Does not need a ton of power and is Sq based. Model it up in the .85 you have to work with and it shoudl have decent extension. All of the boston pro 10" are .5cF recomended sealed enclosure size check them out for sure. if you can fit a 10" you are gonna have considerable more output then any 8" of comparable quality. About the Qtc of .9 should not adversly affect performance. will have more of a peak and roll off faster though the transfer function of the car may smooth this out. read about all the theil small parameters here [URL="http://www.members.shaw.ca/LoudSpeakerBuilder.ca/thiele-small.html"]http://www.members.shaw.ca/LoudSpeakerBuilder.ca/thiele-small.html[/URL] they have a graph similar to your with same driver different size boxes and they show how the qtc affects the out put of said driver. [/QUOTE]

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