Computerized speaker calibration is an alternative on a lot of receivers that makes it simpler to calibrate the speakers. The receiver sends check Appears to every speaker and subwoofer, and screens the seem by using a microphone. Stereo receivers have two channels, and can be used to Perform stereo audio. https://4zoneamplifier41614.verybigblog.com/33545120/not-known-facts-about-4-zone-amplifier