This is very good information that was on another thread that i moved over to this thread, Thanks gtaboyz.
Had the same exact problem on my 2011 SEEG. My fairing speakers were cutting in and out intermittently, I have my lowers removed so couldn't tell if there was an issue there. My rear saddlebag lid speakers were fine (I upgraded to the complete OEM saddlebag speaker and amp kit). Last week I lost all sound to all front speakers, if I faded the radio to the rear only, the rear played fine, if I faded to front only, no sound. I took my bike to the dealer who I have a very good relationship with. IMOP it was the amp and I told them that. We looked up the part # and the amp part # had been changed as it was the same # with an "A" after it. They had the amp in stock, we unplugged the old one, plugged in the new one and it worked, bottom line the amp was bad. While we were working on it one of the other techs came over and said he had an issue with another customers 2011 CVO SESG with the speakers cutting out. When he called MOCO's tech support they advised that they had speaker issues and the fairing speakers both regular and tweeter's had superceded part numbers "A" and to replace them. Since I had the same issue and my bike was still under warranty they ordered all new speakers for my fairing. We did check the part number for the lower fairing speakers and those had not changed. Bottom line on the 2011 CVO SESG the main Amp which sits on top of the radio as well as all the fairing speakers have been changed due to issues and as such have been replaced with "A" part numbers. So to all CVO owners who are having this problem there is/was an issue, no matter what your dealer is saying!!!