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<blockquote data-quote="shredder2" data-source="post: 8694690" data-attributes="member: 674047">A 4th friendly sub will have an Ebp that&#039;s mid range-low... understand that a 4th will have a sealed type extension and ratio will affect your results.A mid-hi Ebp sub will shine in a 6th... ratio can determine the balance in either... (watch velocities, excursion and response... so don&#039;t fall asleep at the mouse).4th orders tend to be tuned 40&#039;s-60&#039;s on the ported side as they exhibit that sealed type low end extension, 6ths can increase output/extend the bandpass but may dip/peak in the center if tuned too far apart/close. An octave spread in a 6th seems to work well and ratio can be used to smooth or add peakiness as well but watch low end extension...... Once again... it&#039;s in a vehicle... lows WILL be augmented by the cabin......&nbsp;&nbsp; it&#039;s a bandpass either way you go... remember that... so try to tailor your output accordingly along with a strong frontstage.There ARE exceptions to all that B.S. I spewed but for a general rule they should apply.I&#039;m done pontificating on this subject... someone call B.S. if I&#039;m spreading disinformation</blockquote>

[QUOTE="shredder2, post: 8694690, member: 674047"] A 4th friendly sub will have an Ebp that's mid range-low... understand that a 4th will have a sealed type extension and ratio will affect your results. A mid-hi Ebp sub will shine in a 6th... ratio can determine the balance in either... (watch velocities, excursion and response... so don't fall asleep at the mouse). 4th orders tend to be tuned 40's-60's on the ported side as they exhibit that sealed type low end extension, 6ths can increase output/extend the bandpass but may dip/peak in the center if tuned too far apart/close. An octave spread in a 6th seems to work well and ratio can be used to smooth or add peakiness as well but watch low end extension... ... Once again... it's in a vehicle... lows WILL be augmented by the cabin... ... it's a bandpass either way you go... remember that... so try to tailor your output accordingly along with a strong frontstage. There ARE exceptions to all that B.S. I spewed but for a general rule they should apply. I'm done pontificating on this subject... someone call B.S. if I'm spreading disinformation [/QUOTE]

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