hi, I have a problem: I have 4 infinity refrence speakers hooked up to my stereo (Pioneer 6600) but i want to hook up an amp to them. i'm going to get a 400 or 600 watt amp, 4 ohms, but I already have an amp running to my Infinity 12" woofers (power acoustik 1200 watts) so my question is, would i need to run new power cables/negetive/rca's/remote wire to the new amp? would I need to run wire from the amp to where the harness is to wrap on where the speakers wrap with the stereo? I just want a little more juice to my speakers, but I don't want to fry my amp and stereo.
No as long as your current power wires can handle the extra current draw, you can share. Do get power distribution block. It'll make it much easier to hook up multi amps. If your current speakers are powered by HU, then you will have to cut into it and connect them to the amp's output.