I went through the hassle of upgrading the speaker wire in the doors in my old Cavalier, but it wasn't really worth it. Far more hassle than benefit.
It depends on how powerful the amps are and thick the power cable is really. I'd be quite happy to run two small amps off a decent 4AWG cable. Also, an amp powering a sub will usually draw more current than an amp that's only powering components.
It depends on how powerful the amps are and thick the power cable is really. I'd be quite happy to run two small amps off a decent 4AWG cable. Also, an amp powering a sub will usually draw more current than an amp that's only powering components.