I purchased a 2010 FLHTK in December and thought I had an issue with the headset because I couldn't get enough volume out of it for either the radio, intercom or CB radio. What I just discovered was that the radio volume, for example, will increase if I turn both the CB and Intercom function off. Similarly, the intercom volume will increase of I turn the CB radio off. So it looks as if the amplifier is not powerful enough to power all three functions with their respective volume adjustments high. The question is, is this normal or is there something wrong with my audio system?

 

Not normal at all. If your using a helmet mount mic, be sure the vox setting is not to high.