Chosen Solution

Ok, i know all the standard reasons NOT to do this (wire an additional pair of speakers into the HU) in the traditional way, but after a bit of googling i havent found anyone mentioning the following: can i take the amp from an unused HU, wire it to power and use it to power the two additional speakers? I mean, IN MY HEAD this seems a reasonable thing to attempt …. I just dont know the fundamentals well enough to know of potential pitfalls BEFORE my car lights on fire…

I have seen separate amps for subwoofers so it shouldn’t be a problem. I would defiantly run a separate power cable for it and make sure it is fused.