hi guys..im confused here...i am going to install an amp and using a line converter from the rear speakers as the inputs on my 89 300e (since i am removing the rear dash speaekrs and using the holes as ports to the sub). what role does the stock fader play in this? will i be doing anything detrimental to the system/setup by doind this..i thought that the fader mainly made small adjustments to the level of volume to the speaekrs...i have an alpine unit with fader controls...what do you guys suggest, if in fact there is some problem with hooking up the amp in this manner...should i just never touch the fader? thanks..

ben