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<blockquote data-quote="Ruler" data-source="post: 6460667" data-attributes="member: 616518">I am going into year 12 and have to do a project for my hsc major work, im planning on redoing my entire car sound system. anyway part of the project has to be an innovation so while trying to work that out i was wondering wether the make a spl box, or a box suited more towards just daily with a low tuning....So no the plan is to make a variable tuned box with 1 L shaped port on either side with on giving a low maybe 25-30 hz tuning, and one on the other-side giving a higher tuning for more spl purposes. then the idea is to block of one side at a time to change the tuning of the box from daily to more spl orientated. can anyone give me an insight to what they think or wether this is not going to work well.one more question is, i am planning to run 2 dd1515&#039;s with a dd1mb amp at around 1200 wrms on 1 ohm. will i need to upgrade from my stock alternator, but i do think i will need a new battery in the back. any thoughts?some picture to try make it make more sense:<img src="http://i641.photobucket.com/albums/uu131/lachy112211/1.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /><img src="http://i641.photobucket.com/albums/uu131/lachy112211/2.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></blockquote>

[QUOTE="Ruler, post: 6460667, member: 616518"] I am going into year 12 and have to do a project for my hsc major work, im planning on redoing my entire car sound system. anyway part of the project has to be an innovation so while trying to work that out i was wondering wether the make a spl box, or a box suited more towards just daily with a low tuning.... So no the plan is to make a variable tuned box with 1 L shaped port on either side with on giving a low maybe 25-30 hz tuning, and one on the other-side giving a higher tuning for more spl purposes. then the idea is to block of one side at a time to change the tuning of the box from daily to more spl orientated. can anyone give me an insight to what they think or wether this is not going to work well. one more question is, i am planning to run 2 dd1515's with a dd1mb amp at around 1200 wrms on 1 ohm. will i need to upgrade from my stock alternator, but i do think i will need a new battery in the back. any thoughts? some picture to try make it make more sense: [IMG]http://i641.photobucket.com/albums/uu131/lachy112211/1.jpg[/IMG] [IMG]http://i641.photobucket.com/albums/uu131/lachy112211/2.jpg[/IMG] [/QUOTE]

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