pet575 wrote:
... Curious since I'm slowly planning my attack and looking at all options. Was considering just leaving the 4 stocks 6 1/2's alone on the Clarion head unit and adding an amp and sub as stage one. Then, stage two, adding a 4 channel amp for the 6 1/2's. Then, stage 3, if necessary, replacing the 6 1/2's with better equipment...
I too have the basic system, with the four 6 1/2's powered only by the CMD4. I'm adding the Clarion APX480M amp to an RMS 80W per channel to see if it livens the stock speakers up some, and eventually plan on adding a sub. Although, looking at the fantastic reviews for the Polk MM2104 that I believe TX has, the sub maybe sooner than later. With the config I'm planning, that would require another amp, the APX240M maybe. I'm considering adding a second battery as insurance that the APX480M didn't run down the existing single battery (the only thing holding up my install of the APX480M), but with two amps, I think that'd be a must.
TX, do you know what kind of enclosure you have for your Polk MOMO sub?
*edit - Amost forgot, I am adding a remote as well. With the Sirius radio, the rest of the crew 'takes turns' choosing stations, resulting in a lot of demands on me to punch buttons. I figure I have better things to do, like safely operate the boat.

Not certain about placement yet, but it'll be in the cockpit, within reach of the crew. Found the remote for $89 on eBay, and the extension cable on Amazon for $20 something.