Answer by
WesJones76 (7)
An Amp Crossover is a simple circuit made of matching capacitors that creates a bandpass. This allows lower frequencies (BASS) to be sent to low frequency speakers (WOOFERS) and higher frequencies to be sent to high frequency speakers (TWEETERS). Mid-Range speakers do not require a crossover. Many amplifiers have built in crossovers, but it is easy to build your own.