Based on the link provided by JM, that's correct - each speaker will get half the output of the amp provided they are the same impedance.
yep, that's exactly how i am running it.
So each speaker wired in parallel will receive 37.5W at 12.5V (basically, when the engine is not running). I'm not sure that's enough. I am reconsidering using the M6600 to run all my speakers now. I may use it to run all the cabin speakers at 4 ohms so they are getting 55W at 12.5V and then use my current 50x4 amp to run the 4 tower speakers. So everything will be wired one speaker per channel to get the most out of the amps. But that means I will probably need a second battery, a battery switch, an EQ (for more pre-outs), etc. Plus I still have the third amp running just the sub. This suddenly got more complicated :)
what are you using to power the sub. My cockpit speakers are wired that way and it pretty defening in the boat . I don't have a real need when the boat if off to project the towers, so when the boat is on, the amp should push 50w per channel.
I figured 4 speakers @ 50 rms, would be louder than 2 @ 75rms.
Its trial and error. i have looked a the 4 channel JL m4500 as well if its not enough. I don't want to add another amp if i don't have to, the hole on the OBV is tight as it is I did the dual battery setup with the BEP marine vsr and switch.
I have a Boss R-635 rated at 200Wx2 rms that I am running bridged to the sub. It's a low quality amp, I know, but it seems to work just fine. I have the subwoofer output set between 0 to -5 at the head unit because it hits so hard.
Yeah, I'l give it a try running all the speakers from the M6600 and see how it sounds before going thru the trouble of adding a third amp.
if you get the chance.could you post pics of the aerial tower speaker clamps, I now have two different sets, i believe one os for the larger tower and one for the obv 1 5/8 tower.
Here's a pic from an old post of my old aerial cans with the larger diameter brackets. This is on a 2-3/8" diameter LSV tower.
Is that what you're looking for?