Both high and low pass filters can filter signals at different strengths. These are referred to as “orders.” Usually, only filters between the first and fourth order are used. A first order filter can block signals up to 6 dB and a fourth order filter can block signals all the way up to 24 dB per octave. All of this, however, goes on inside of the loudspeaker and cannot be observed. Watch the following instructional video to learn more about high and low pass filters:
Using Winford 2-way as an example, one can clearly recognize the loudspeaker’s 2-way construction which is helpful when trying to visualize how a crossover works. A total of 4 drivers – 1 tweeter, 1 midbass driver, and 2 bass drivers – carry out the task of sound reproduction which covers a range from 45 to 20,000 Hz. This nearly covers the entire human hearing range.