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<blockquote data-quote="helotaxi" data-source="post: 397811" data-attributes="member: 550915"><p>Close, but it still has a slope. It will be 24dB down at twice the crossover frequency. Fourth order analog crossovers create phasing problem all their own also. There is a bit of phase lag created in the crossover that can play hell with the coherency of the midbass/bass transition. You are usually better off using a 12dB/oct slope and setting it lower and using relative phase adjustments to smooth the response than trying to go with a really steep slope.</p><p></p><p>Digital crossovers are a different story. Alpine, Sony and Pioneer have all made true digital crossovers in the past with slopes as steep as 72dB/oct. All processing was done before the D/A convertor and there were no crossover phase issues because of that.</p></blockquote><p></p>
[QUOTE="helotaxi, post: 397811, member: 550915"] Close, but it still has a slope. It will be 24dB down at twice the crossover frequency. Fourth order analog crossovers create phasing problem all their own also. There is a bit of phase lag created in the crossover that can play hell with the coherency of the midbass/bass transition. You are usually better off using a 12dB/oct slope and setting it lower and using relative phase adjustments to smooth the response than trying to go with a really steep slope. Digital crossovers are a different story. Alpine, Sony and Pioneer have all made true digital crossovers in the past with slopes as steep as 72dB/oct. All processing was done before the D/A convertor and there were no crossover phase issues because of that. [/QUOTE]
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