CROSSOVERS & EQ

  • AudioControl 4XS

    Bywsw6404

    A Legend of the Analog Crossover Era When looking back at the history of car audio, there are certain pieces of equipment that represent an entire era. Some are head units.Some are amplifiers.Others are speakers and subwoofers. But there were also components that played a much more important role behind the scenes — equipment that…

  • PPI FRX-456

    Bywsw6404

    An Iconic Old-School Active Crossover In today’s car audio systems, crossover functions are usually built into DSP processors. A single DSP can handle crossover points, slopes, EQ, time alignment, phase, routing, and much more. But things were very different during the golden era of American car audio. In the 1990s and early 2000s, a serious…