jkittleson Posted January 2, 2003 Share Posted January 2, 2003 If you set your subwoofer crossover on your receiver to 90 and your subwoofer crossover on your sub to 90, what is the effective crossover rate? Thanx Quote Link to comment Share on other sites More sharing options...
Scipio80 Posted January 2, 2003 Share Posted January 2, 2003 I'm gonna go with 90. Quote Link to comment Share on other sites More sharing options...
dougdrake Posted January 2, 2003 Share Posted January 2, 2003 Whatever the answer is, I'd suggest taking one of those crossovers out of the picture. You may end up over-filtering. DD Quote Link to comment Share on other sites More sharing options...
WMcD Posted January 2, 2003 Share Posted January 2, 2003 You're asking about how two filters act when they are cascaded. The HT amp is saying, I'm gonna output all frequencies up to about 90 Hz to the sub on that output. The sub is saying, I'm gonna listen to all frequencies up to about 90 Hz, and ignore everything above that. Very generally, the crossover point is still 90 Hz. A typical definition is that the crossover point is 3 dB down, or half power. So there is not really a brick wall. Rather a roll off or roll on, depending on which direction you look in on the frequency curve. It should work that each filter cause an additive roll off, becoming more effective. E.g. if each rolls off at 12 dB per octave, the combination rolls off at 24 dB per octave. But the crossover point is still at 90 Hz. If things are working properly, the crossover point is not 45 Hz. Gil Quote Link to comment Share on other sites More sharing options...
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