A guy from an electronics shop told me that i shouldn't connect a bass guitar to, for example, a guitar amp or a home theater because it generates too low frequence and those speakers aren't prepared to that frequence, is it true? If it is, how could i figure it out to maka it work without breaking the speakers? I have to do it for my band's reharsals and i'm thinking of connecting mics, guitar, keyboard-synth and bass to a mini mixer console, then to an audio amplifier and then to a couple of speakers with 12 inch 50w rms subwoofers and 50w rms medium frequence divers, could i break them?? Thanks!