Our Site Avoid adjusting your crossover to too great an extreme. It can make music sound very odd and distorted, unless you are compensating for serious anomalies in the playback. Coils are rated in units of inductance called Millihenrys. Resistors are measured in Ohms .
Capacitors have values commonly indexed in Microfarads .
Since woofers have an extremely attenuated response in the high range and tweeters can be destroyed by powerful low frequencies, a crossover circuit is used to isolate, optimize, and integrate the drivers. A crossover is an electronic or mechanical means of separating frequencies in the audio range so that they can be rendered most efficiently in a multi driver system. There is normally, one passive crossover in each cabinet. In less expensive speakers, this means that the tweeter may be efficiently isolated from the woofer through a High Pass Filter , usually a single capacitor that limits the low frequencies and passes on the high frequencies delivered to the tweeters and midranges, from the amplifier. Another popular alternative is the Active Electronic Crossover in which the crossover action takes place in a unit positioned before the amplifier in the circuit.