Thanks Stevdart, but that last paragraph was choppy, I was hella tired.
Something is wrong. Im going to start with something I have done before: Attenuator. Your unit has a "Attenuator" function. When you press it the volume is lowered by 20db. If you turn up the volume, the attenuator does not turn off, it stays on. When you turn the volume up to max (35) the attenuator is still defeating the sound by 20db! I know I have cranked the volume and said "hey, wtf is wrong!". My old Kenwood would flash ATT at you when the attenuator is on, the new one does not so it happens to me every now and then.
Ok, there is also a volume offset control. It allows all the sources to be adjusted for volume independently. Like a second volume on each reproduction source: tuner, cd, cd changer, aux input, so on and so forth. Find it and see if it is turned down, it goes from 0 to -15 I think.
You had the entire system professionally installed right? You need to go back and see them. I’m not sure what you idea of loud is. I know people who will not call a system loud until they hear the speakers popping and audible distortion. That is not how I judge an audio system. I judge them on the ability to get reasonable spl (reasonably loud), while maintaining a linear sound through all frequencies (the frequencies seem balanced, not overpowering bass, or jumps in midrange at different volume levels) and a realistic weight to the music.
I personally set up all my systems to achieve max output without audible distortion with the deck volume at max. People get in a system I have set up and say "doesn’t it get any louder?" I say, "Was that not loud" They say, "Yeah it was loud, but my buddies is louder! He can make the woofers pop!" Well, let me crank up the gain! *Sigh* Setting a system up this way is proper and will keep YOU (or your friends who "like to hear the speakers pop!) from damaging your equipment. Maybe the shop that set up your system follows the same logic I do? Each CD is different so the output should be able to be adjusted a small amount from the deck, independent sub controls, bass-treble, eq's and such.
Other then those simple things listed, you could get real deep in sh*t without a very specific question. Phase problems, loose wiring, bad grounds/power, bad equipment, inputs on the output side, god knows what it is. Try those two things and post back. BTW, nice deck. Hope you got an alarm.