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In Reply to: Number of crossovers in a speaker posted by amdan on February 22, 2007 at 21:09:46:
For instance, 3-way Magnepans (ie. 3 drivers) have an external passive XO that takes 2 pairs of wires (one for low, one for high) but the "high" input is then further split in an internal XO to ribbon and mid-range.Typically, you'll have as many "crossovers" as there are drivers ... but, again, it depends what you mean by a "crossover"!! :-))
If you define a "crossover" as a pair of LP & HP slopes intersecting, then a 3-way speaker has 3 drivers and 2 crossovers.
However, if you define a "crossover" as either:
* lowpas
* highpass, or
* bandpass... then a 3-way speaker has 3 crossovers.
Regards,
Follow Ups:
Let's define a crossover as a frequencey filtering unit with a pair of inputs.My speakers have 2 pairs of inputs and 3 drivers. I imagine that one pair of inputs leads to a low pass xover which then feeds the woofers.
The other pair of inputs lead to a high pass xover which then feeds the tweeters. I presume a more complex xover is needed for the mids. Is this right?
Hi amdan,You said: "My speakers have 2 pairs of inputs and 3 drivers".
Are the three drivers all different sizes? IE. do you think you have a woofer, a mid-range and a tweeter?
If so then 1 pr of input posts probably leads to the woofer (with bass lowpass filter), while the other pair leads to the mid-range and tweeter, combined. This "other pair" must therefore feed into a mid bandpass and a tweeter highpass filter. (A bandpass filter is simply a highpass & lowpass combined.)
Regards,
Thanks Andy. BTW my speakers are 3 way.
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