Volfenhag ZX-862R Coaxial Car Speaker "amplifier volume crackle" Questions

...crackle or give any noise. if it is a factory radio then your factory amplifier is bad. if it is an aftermarket radio the outputs are clipping you possibly have a blown speaker ot too many speakers. ...

...volume is 30 - then the mininum is 15 and you can't hear any cracking sound. If you exceed 15 the minimum, as you said starting 17 - 20 you hear crackling sound .Then you reach ,what they called the ...

...amplifier running a hifonics brutus subwoofer and i think it is blown. I don't understand how this could happen as the amp is only pushing 500 rms and the sub takes 600 rms. I got no smoke or smell. ...