
The number of oscillations per second is measured in Hertz (Hz). This is literally how frequently (oscillations per second) a sound is vibrating. It also shapes the sound to help compensate for the natural characteristics of each driver.įirst, let’s talk about frequencies.

This signal “traffic cop” is necessary so you don’t have the full range signal going to your tweeter, for example. Its job is to allow or prevent certain frequencies from passing through, as well as providing EQ and phase adjustment if necessary. In the simplest terms, a crossover is a filter.


We get a lot of inquiries on the matter here at Aperion, so here is a beginner’s primer on what this essential component of a speaker system does. The term “crossover” gets thrown around a lot in the audio community, but there always seems to be some confusion when it comes to this subject.
