loangainer
New Member
FYI- I googled for 2008 clarion amps and there where only 2 made, and by the dimensions I figured out it is an APX490M. 4 channel 720W amp. it's funny how the specs say slightly smaller Wattage (640W) and then it shows 4 x 90W at 4 ohms and 180x 4 @ 2 ohms. I know my new speakers are 4 ohm and I think the Clarion ones on the boat already are 4 ohm too. like I said earlier, it appears there is another amp (albeit small) or just the head unit is driving the 4 cabin speakers because they kept playing when I unplugged the amp in back. so now I have 2 big (in my opinion) 4 ch amps for 8 channels total. I want the fader to work so I'll use the "front" RCA's for the cabin 4 speakers and the "rear" for cockpit and transom. I'll leave the non-fade unhooked. right now my non-fade is for rear and the "rear" RCA is unhooked,,, so I can never fade to front to quiet down the cockpit. (the cockpit rocker switch doesn't turn off the cockpit speakers whereas the cabin one does work). Now I just have to figure out how the ohms are figured when wiring 2 speakers (4 wires) to 2 channel outputs (I have 10 total speakers and 8 channels of output..... off to google some more