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<blockquote data-quote="80INCHES" data-source="post: 1986232" data-attributes="member: 559036">this is y alot of people dont like bandpass boxes..it needs a big boxespecially 6th order...with 6th order u need 3 big ported chamberswith 4th order its alittle more forgivingi&#039;ve designed 4th orders thats had .8cubes sealed playing into 1.2 cubes ported.....and that was 4&nbsp; 1 L712...did it get loud....hell yea...it was able to take 1500 with no problem....did it hit the lows well.....it did its job but if u played 20hz..u will get a serious excursion clip cuz it will be trying its best to produce that note....but on rap it worked wonders....but not to get off topic...the front chamber determinds how efficient the box is going to be....but the wierd pat about the front chamber...the smaller the widder the passband will get..it wont be as efficient but it will have a wider passbandso this is y u have to have a balance...get big sealed or ported rear chambers and&nbsp; have the subs play into a big ported chamber and u will have good low end extention and high output80</blockquote>

[QUOTE="80INCHES, post: 1986232, member: 559036"] this is y alot of people dont like bandpass boxes..it needs a big box especially 6th order...with 6th order u need 3 big ported chambers with 4th order its alittle more forgiving i've designed 4th orders thats had .8cubes sealed playing into 1.2 cubes ported.....and that was 4 1 L712...did it get loud....hell yea...it was able to take 1500 with no problem....did it hit the lows well.....it did its job but if u played 20hz..u will get a serious excursion clip cuz it will be trying its best to produce that note....but on rap it worked wonders....but not to get off topic...the front chamber determinds how efficient the box is going to be....but the wierd pat about the front chamber...the smaller the widder the passband will get..it wont be as efficient but it will have a wider passband so this is y u have to have a balance...get big sealed or ported rear chambers and have the subs play into a big ported chamber and u will have good low end extention and high output 80 [/QUOTE]

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