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<blockquote data-quote="brian84corvette" data-source="post: 5453820" data-attributes="member: 586635"><p>geo metro 2 door or 4 door ?</p><p></p><p>id take a guess and say that your stock alternator is all you can use.</p><p></p><p>and it proly makes nothing for power = wich *****</p><p></p><p>but</p><p></p><p>you can add a fiew big batterys in the rear to keep voltage at respectable levels when your bumping good.</p><p></p><p>your going to need to figure out how to fit all this in your car.</p><p></p><p>multiple batterys - and good sub enclosure. its a juggling game.</p><p></p><p>there will also be un believable rattles in your car when you get high power sub in there.</p><p></p><p>so the idea of completely gutting your interior and using sound deadning material is a good idea ( doors / roof / hatch or trunk )</p><p></p><p>the biggest thing you need to do is design the box for the sub to be ideal for your car.</p><p></p><p>box is 60% of whats important. crappy subs can sound great in good boxes for them.</p><p></p><p>good subs can sound crappy in poo poo boxes.</p><p></p><p>ported boxes are tuned to a certan frequency where they perform best.</p><p></p><p>lets say 30 hz = notes from 30 to 45 hz will realley be amazing in a box tuned to 30 hz</p><p></p><p>and start to fall off so to sepak from 45hz on up.</p><p></p><p>actually finding a boxes tuning requires alot of complicated math on how long and big the port is vs the air space inside the box, vs the speakers in and out movment.</p><p></p><p>thats why its eazy to mess it up.</p><p></p><p>also - a box is to be built to each and every single sub's exact specs to perform at its best.</p><p></p><p>or get what you want from it. box built for 12" jbl sub will be completely diffrent for a box built for a 12" dd sub.</p></blockquote><p></p>
[QUOTE="brian84corvette, post: 5453820, member: 586635"] geo metro 2 door or 4 door ? id take a guess and say that your stock alternator is all you can use. and it proly makes nothing for power = wich ***** but you can add a fiew big batterys in the rear to keep voltage at respectable levels when your bumping good. your going to need to figure out how to fit all this in your car. multiple batterys - and good sub enclosure. its a juggling game. there will also be un believable rattles in your car when you get high power sub in there. so the idea of completely gutting your interior and using sound deadning material is a good idea ( doors / roof / hatch or trunk ) the biggest thing you need to do is design the box for the sub to be ideal for your car. box is 60% of whats important. crappy subs can sound great in good boxes for them. good subs can sound crappy in poo poo boxes. ported boxes are tuned to a certan frequency where they perform best. lets say 30 hz = notes from 30 to 45 hz will realley be amazing in a box tuned to 30 hz and start to fall off so to sepak from 45hz on up. actually finding a boxes tuning requires alot of complicated math on how long and big the port is vs the air space inside the box, vs the speakers in and out movment. thats why its eazy to mess it up. also - a box is to be built to each and every single sub's exact specs to perform at its best. or get what you want from it. box built for 12" jbl sub will be completely diffrent for a box built for a 12" dd sub. [/QUOTE]
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