cwlucas
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crossovers - 2006/08/15 16:41
There are two types of crossovers active and passive.Passive crossvers are not not powered, they hook inline between the amplifier and the speaker. Basically they block what signal the speaker isn't designed to play. A first order or 6DB crossover would be a non-polar capacitor in series with the positive wire going to a highs speaker or a coil going to a sub. To make that a 2nd order or 12DB you would add a cap or coil across the positive and negative. One would block the undesirable frequency the other would pass it back to the negative wire before it gets to the speaker. You can increase the slope or amount of undesirable frequency by stacking more components. This works well but is not as efficient as an active crossover. Active crossovers do the same trick but they do it before the amplifier with electronics. This makes them more efficient because your not wasting power. The amp gets a low, high, or mid signal and thats all it reproduces. So instead of producing a full range signal and blocking some of it, you use the whole signal. Now if you plan on using one amp to amplify all the speakers then you have to use a passive network which will divide the signal and send it to different speakers.
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