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<blockquote data-quote="80INCHES" data-source="post: 5281230" data-attributes="member: 559036">box types1st order(free air)2nd order(sealed)3rd order(ported)4th order(bandpass with 1 sealed chamber playing into 1 ported chamber)5th order(4th order bandpass with a low pass filter)6th order parallel tuned(bandpass with the rear chamber ported while the sub is playing into another ported chamber...both ports are seen)6th order series tuned(bandpass with the rear chamber ported playing into a front ported chamber...one one port is seen and its fron the front chamber)7th order(bandpass with the rear chamber using a passive radar while the sub is playing into a ported chamber..only the passive radar and the front chamber port are seen)8th order( bandpass with both the front and rear chamber ported and both ports playing into another ported chamber...only 1 port is seen but theres 3 ports all 2gether)80</blockquote>

[QUOTE="80INCHES, post: 5281230, member: 559036"] box types 1st order(free air) 2nd order(sealed) 3rd order(ported) 4th order(bandpass with 1 sealed chamber playing into 1 ported chamber) 5th order(4th order bandpass with a low pass filter) 6th order parallel tuned(bandpass with the rear chamber ported while the sub is playing into another ported chamber...both ports are seen) 6th order series tuned(bandpass with the rear chamber ported playing into a front ported chamber...one one port is seen and its fron the front chamber) 7th order(bandpass with the rear chamber using a passive radar while the sub is playing into a ported chamber..only the passive radar and the front chamber port are seen) 8th order( bandpass with both the front and rear chamber ported and both ports playing into another ported chamber...only 1 port is seen but theres 3 ports all 2gether) 80 [/QUOTE]

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