i got my amp installed recently and after i did my two back speakers are only playing lows, no highs or mids, just bass. before the amp was installed it played everything just fine, no idea whats wrong with it. any help?
If your existing system already have crossover, just turn off the built-in crossover on the new amp. If there is no option to turn it off, just set it at Full range signal, or turn off LPF (Low Pass Filter)