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The 4th order thread
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<blockquote data-quote="mlstrass" data-source="post: 8130880" data-attributes="member: 569126"><p>You won't need to build/test 20 times for a daily set up. Use a decent program and go from there as those numbers will not translate perfectly to real world application.</p><p></p><p>I just did a 4th in a Suburban with 8 15's. Port opening/tuning in the program was WAY diff then what worked best in vehicle. So that is the part you normally want to be able to play with to dial it in. So if possible design it so loading wall/port can be adjusted until your happy, then make it permanent.</p><p></p><p>One I just did is a demo set up: 57.5 @ 30Hz and 60.3 @ 40Hz, so perfect for most Decaf music. Does dropp off again at 50Hz and loading wall alone wouldn't correct that but guy is happy with it.</p></blockquote><p></p>
[QUOTE="mlstrass, post: 8130880, member: 569126"] You won't need to build/test 20 times for a daily set up. Use a decent program and go from there as those numbers will not translate perfectly to real world application. I just did a 4th in a Suburban with 8 15's. Port opening/tuning in the program was WAY diff then what worked best in vehicle. So that is the part you normally want to be able to play with to dial it in. So if possible design it so loading wall/port can be adjusted until your happy, then make it permanent. One I just did is a demo set up: 57.5 @ 30Hz and 60.3 @ 40Hz, so perfect for most Decaf music. Does dropp off again at 50Hz and loading wall alone wouldn't correct that but guy is happy with it. [/QUOTE]
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