Denon 4400H...Not loud enough?? in Home Theater Posted October 18, 2018 3 hours ago, garyrc said: Something is definitely wrong. Check your Denon manual. There are two ways to set up your Main Volume Control. You want it set up to film industry standards so a very high volume is about 0 dB and a low volume is a negative number, like about - 70 dB. Under those circumstances, Audyssey would set the Sound Pressure Level (the correct term for "volume" or "loudness") to Reference Level when the Main Volume Control is at 0 dB. This is outrageously loud on loud passages. It, after running Audyssey, will give you the same SPL in dB at the Main Listening Position (which should be at microphone position #1), with your speakers, in your room, at your as the mixers heard when doing the sound for the movie. This is possible because movies, unlike music, are mastered to be at a known and standard SPL level. This should provide instantaneous peaks (milliseconds long) up to full scale for main channels of 105 dB, and 115 dB for the subwoofer channel. THX has looked into perceptual or psychological loudness (and "loudness" is a perceptual/psychological term, rather than a physical one), and determined that someone with a Large home theater or listening room will perceive - 5 dB MV, rather than 0 dB, as the same level as Reference level in the center of a THX commercial movie theater, due to the smaller room's earlier reflections (perceived as the original sound rather than reverb) and pressure waves. In your smallish room at 5 feet, I'd think, maybe, -8 dB would "sound like" Reference level. Many people listen at -10 to -15 dB. I've never heard of Audyssey setting the volume too low, when the Main Volume Control is set up as above. Many of us do add a subwoofer boost of 3 to 8, or so, dB, because, we became used to a few anomalous bass peaks before Audyssey. Several researchers (Harmon inc. and several others) found that most people prefer low bass being elevated as much as 9 dB over the highest treble. So, Audyssey smooths out the kinks and zigzags and you set the overall, smoothed, bass to taste. Don't turn the bass up with the AVR's subwoofer trim control. The cheap line drivers in many AVRs' subwoofer output circuits clip easily. Keep that trim level below about -5. Use the gain control on the subwoofer itself to turn up the bass. Once you get your SPL problem solved, put your feet up and read both of the following -- they are leagues better than almost any manual, and unlike most manuals, they have been scrutinized and revised. "Audyssey FAQ Linked Here" Guide to Subwoofer Calibration and Bass Preferences I tried to confirm that the Denon AVRX4400H is powerful enough (which it almost certainly is) but the website won't let me see the specs. When you get past all the advertising blather, the power figure that counts is "Continuous Power per channel in watts, 2 channels operating, 20 to 20,000 Hz. at 8 Ohms at a low level of Total Harmonic Distortion (below about 0.09%). This information should be in your manual, probably in the last few pages. If the figure is 100 watts per channel, or more, for two channels, the amp is probably powerful enough for your speakers. A much more realistic spec would be "with all channels operating," to put a proper strain on the power supply, but AVR manufacturers haven't revealed that for the last few years. A "bench test" by a reviewer would probably cover that. P.S. Audyssey makes my system sound much better, really sing. It is infinitely annoying to me that even the best most respected receiver manufacturers don't include power ratings for all channels being driven. I mean who the hell buys a 7.2 receiver to listen to stereo? No one does. So that 2-channel spec is completely useless. And they literally ALL do it! Even on the high end models.