chopin0302

So I had the series VI installed recently, have had no problems with the unit, it's absolutely great. I have noticed something unusual with my Shaker 500 radio however. Ever since the installation, it seems as though I've had to turn up the volume quite a bit to be able to hear it. For example, when I'm driving on the interstate, I used to have the volume set at five full bars. It was plenty loud. Now, I have to have the vol turned up to about 8 or nine to get the same volume level. Is this normal for a s/c? Or am I just crazy...