I have six (6 ) polk coaxial speakers and they are rated at 4 ohms each. I need to know how many of these I can hook up to just my head unit before the head unit cuts out. I can wire the two sets of front speakers in parallel which would appear as 2 ohms to the head unit., i beleive. The headunit has a 50x4 mosfet amplifier,but I don't know what would be the best way to wire the 6 speakers for the headunit to handle them the best. Any ideas? Thanks for any help