Making the case for utilizing your subs crossover (Not Polks Method)
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The industry standard is to always bypass your subs low pass filter/Xover when setting speakers to "SMALL" on the receiver. This automatically engages the sub's high-pass filter. The problem is that most high-pass designs don't utilize the steeper & recommended 12-24db.per octave slope. Instead less effective 6db. slopes are used. This results in a bass cutoff that exceeds its mandate, & can approach 160hz for a typical fixed 80hz high-pass design.
I say use BOTH xovers. Sure it's possible for complications from running your receivers crossover and the subwoofers crossover simultaneously.. such as bass cancelations or frequency response irregularities- but fiddling with placement and using an SPL meter as your guide should take care of this- and in the end it guarantees that both the primary speakers and sub are prevented from re-producing frequencies that they have no business in reproducing.
I say use BOTH xovers. Sure it's possible for complications from running your receivers crossover and the subwoofers crossover simultaneously.. such as bass cancelations or frequency response irregularities- but fiddling with placement and using an SPL meter as your guide should take care of this- and in the end it guarantees that both the primary speakers and sub are prevented from re-producing frequencies that they have no business in reproducing.
H/K Signature 2.1+235
Jungson MagicBoat II
Revel Performa M-20
Velodyne cht-10 sub
Rega P1 Turntable
"People working at Polk Audio must sit around the office and just laugh their balls off reading many of these comments." -Lush
Jungson MagicBoat II
Revel Performa M-20
Velodyne cht-10 sub
Rega P1 Turntable
"People working at Polk Audio must sit around the office and just laugh their balls off reading many of these comments." -Lush
Post edited by aaharvel on
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I believe the bass management circuitry found in home recievers is *very* sharp. If you set your LFE to take signals from 0-80hz, thats what it gets, nothing at all over 80hz gets through. That is my undestanding.My Iron Man training/charity blog.
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32" Sharp LCD. H/K dpr 1001 to Outlaw Audio 7900 to Polk LSi + Paradigm Studio center. Hsu DualDrive ULS-15. PS3/Wii. Outlaw 7900. -
my issue isn't with the crossover/filter in the receiver but in the subwoofer itself.
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Not to further derail, but that's not my understanding of an AVR/ Pre-Pro's bass management. It would not produce a smooth FR blend.More later,
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I know my Panasonic XR-25 digital receiver uses a 24db/octave slope. It has settings for 100hz and 150hz. I have mine set to 100hz and really can't tell the difference when moving the crossover on the sub over 120ish hz.
