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Some info in the difference between boxes
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<blockquote data-quote="IDSkoT" data-source="post: 5230970" data-attributes="member: 584344"><p>Well, some kids wonder "ZOMG, WHAT BOX SHULD I USE?!?!?! IZ PORTED TEH BEST?!"</p><p></p><p>Well, I used WinISD Alpha, I used a pair of Audiopipe TXX-15 drivers, with default specs.</p><p></p><p>Here are said specs:</p><p></p><p>Sealed:</p><p></p><p>7.341 cuft</p><p></p><p>Ported (AKA Vented):</p><p></p><p>15.748 cuft</p><p></p><p>tuned to 22.97 Hz</p><p></p><p>4th order Bandpass:</p><p></p><p>Rear chamber: 6.987 cuft</p><p></p><p>Front chamber: 4.179 cuft tned to 40.99 hz</p><p></p><p>6th order Bandpass:</p><p></p><p>Rear Chamber: 3.531 cuFt tuned to 20hz</p><p></p><p>Front Chamber: .925 cuFt tuned to 63.46 Hz</p><p></p><p>Passive Radiator:</p><p></p><p>7.341 cuFt using a 12" <a href="http://www.parts-express.com/pe/showdetl.cfm?Partnumber=295-496" target="_blank">Passive Radiator</a> from Parts-Express</p><p></p><p>Now, the color chart:</p><p></p><p>Sealed: Yellow</p><p></p><p>Ported (Vented): Grey</p><p></p><p>4th Order Bandpass: Orange</p><p></p><p>6th order bandpass: White</p><p></p><p>Passive Radiator: Purple (It could be pink.. I'm kind of color blind)</p><p></p><p><img src="http://img.photobucket.com/albums/v714/TwistedShot/chart-1.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>For your hard-core people out there, this was done in WinISD @ 85* F, 75% humidity, and 101.325 Pa...</p><p></p><p>Please note:: As you alter the tuning frequency on vented boxes, it becomes more "peaky", and won't roll off that flat. This goes the same for the bandpass boxes, as well. If I changed the 6th order bandpass box so the front chamber is tuned to 100hz, the whole line shifts and it has nearly the same response as sealed/vented/passive radiator in the 40-50hz range, and peaks really high in the 100hz range.</p><p></p><p>Now, with that said, and the chart shown, note, this is just Db gains based on a computer model, and does not include the car's involvement...</p><p></p><p>As most will tell you, it all depends on your car and your application.</p><p></p><p>But, I just decided to put this together real quick to show each box's relationship to each other in perfect conditions.</p></blockquote><p></p>
[QUOTE="IDSkoT, post: 5230970, member: 584344"] Well, some kids wonder "ZOMG, WHAT BOX SHULD I USE?!?!?! IZ PORTED TEH BEST?!" Well, I used WinISD Alpha, I used a pair of Audiopipe TXX-15 drivers, with default specs. Here are said specs: Sealed: 7.341 cuft Ported (AKA Vented): 15.748 cuft tuned to 22.97 Hz 4th order Bandpass: Rear chamber: 6.987 cuft Front chamber: 4.179 cuft tned to 40.99 hz 6th order Bandpass: Rear Chamber: 3.531 cuFt tuned to 20hz Front Chamber: .925 cuFt tuned to 63.46 Hz Passive Radiator: 7.341 cuFt using a 12" [URL="http://www.parts-express.com/pe/showdetl.cfm?Partnumber=295-496"]Passive Radiator[/URL] from Parts-Express Now, the color chart: Sealed: Yellow Ported (Vented): Grey 4th Order Bandpass: Orange 6th order bandpass: White Passive Radiator: Purple (It could be pink.. I'm kind of color blind) [IMG]http://img.photobucket.com/albums/v714/TwistedShot/chart-1.png[/IMG] For your hard-core people out there, this was done in WinISD @ 85* F, 75% humidity, and 101.325 Pa... Please note:: As you alter the tuning frequency on vented boxes, it becomes more "peaky", and won't roll off that flat. This goes the same for the bandpass boxes, as well. If I changed the 6th order bandpass box so the front chamber is tuned to 100hz, the whole line shifts and it has nearly the same response as sealed/vented/passive radiator in the 40-50hz range, and peaks really high in the 100hz range. Now, with that said, and the chart shown, note, this is just Db gains based on a computer model, and does not include the car's involvement... As most will tell you, it all depends on your car and your application. But, I just decided to put this together real quick to show each box's relationship to each other in perfect conditions. [/QUOTE]
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Some info in the difference between boxes
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