Thank you for the clarification on the volume settings. Now let's summarize:
1. You question the validity of the AVR's preout, whether it is 1.2V or much higher per AH review.
I trust Gene's measurement. Denon rated the unit for 1.2V just as most other manufacturers do, those are not the maximum output (see Gene's response post# 44). It is probably a continuous rating. Even 1.2V is pretty close to the 1.4V that Crown requires anyway.
2. You wonder if there is a setting in the Denon that is causing the perceived lack of volume.
That is always possible but you can do a factory processor reset to make sure everything is back to factory default setting. Or you can at least get into setup and make sure the speaker levels for the L/R are set to 0 and listen to direct or even pure direct until you solve this puzzle.
3. You still think
you are not getting full output from the Crown?
The Crown tech told you to watch the light at the front, crank the volume up (set the gain on the Crown to max.) to see if you are getting the solid green or briefly flash red. Be very careful to push it to the red though, back off as soon as you are there.
If after trying 2) & 3) you are still not satisfy with the volume, you really need to get a sound meter so you can see what kind of dB you are getting. There are other reasons such as:
- your room is large and you sit far away, such 4 meters or more.
- for whatever reason you need much higher SPL than the rest of us
.
- defective components, AVR, amp, cables etc.
Lastly, remember doubling power output only get you 3dB more SPL. As someone has sort of told you already, the Crown amp is not going to help you much in terms of getting much louder sound. You need 6 to 10 dB more SPL to perceive twice as loud.