Tim: thanks, I will try that this week. I appreciate the help. You guys rock!
John: yes, I have a 2008 SANTE 230. I didn't have to do any mods to add the 650's. the new XS 650's were the size as my Polk speakers. I just cut off the Polk cross overs and wired the 650's up. the only thing i had to do was use different holes for the screws because the placement is different than the polk housing, but that only required drilling a real small pilot hole and then screwing the screws in through the speakers.
TigeMike: yah, I'm 99.9% positive I'm using the purple Non-Fade pre-outs. I'll have to go back and look at the manual for the CMD5, I didn't realize it had a sensitivity setting. Thanks.
Dax: I might have misspoke. They are currently straight up and down, so right in the middle, the volume is loud, just not as loud as I'd like.
Thanks for the suggestions everyone. I'm guessing then, that having the power, ground, remote wire from the WS-420 running through the same power wire as the tower amp isn't the issue. I'll check the rest.