What Is a Car Audio Amp or Processor Infrasonic/Subsonic Filter?
If you’ve looked at any top-quality car audio amplifiers or signal processors, you may have seen an adjustment labeled as a subsonic filter. If you have subwoofers or speakers that may not play the lowest of audio frequencies at high levels, your installer can adjust this control to provide protection. First, let’s look at how it all works. Proper Filter Terminology First and Read more
