When I calibrate my speakers with the recievers test tones. The master volume readout goes to 00. When I listen to movie,music and watch TV I have the master volume set at -40 on average. Is this normal to listen to the master volume this low. I seens other people post that the are at like -15 or so. Am I doing something wrong or is this normal. I have a Denon 3600 reciever if it helps. Any help would be appreciated.