Originally Posted by Smarty-pants
Most likely what you are experiencing is the result of the dynamic compression with sd dvd.
With Blu-ray, the soundtracks that are lossless (DTS-HD/MA, Dolby TrueHD), will not suffer from the compression that most sd-dvds do.
The Blu-ray discs allow for much more data to be placed on the discs, so they are able to put high resolution audio tracks that are close to, or identical with, the original master soundtrack. This means that the audio will be much more dynamic, having a broader spectrum of sound than a sd-dvd would have.
The louder sounds create a higher SPL (IE: explosions), while the softer sounds (IE: whispering) are at much lower volume.
Therefore, the overall sound will appear to be lower in volume, but in reality is just more dynamic.
You will have to turn that volume up a bit more to recognize the more quite sounds as a resonable volume level. However, be prepared for those loud explosions, and scary moments in horror flicks to blast you out, just like they do in the commercial theaters.
If this is UNdesirable to you, you can activate the D
ontrol in either your player, receiver, or television.
That feature will compress the audio in a similar manner that mirrors the compression for sd-dvd.
I will certainly have to look into this, as I was watching the latest "Batman" BlueRay last night. My first move is to get an EAR exam, as I have always had difficulty HEARING softly spoken dialog in movies. So after 20 years, I put together a NEW system (Onkyo 906, new 7.1 speakers, and the Oppo-83). Having a decent "middle channel" speaker has helped, but when I set my master AVR volume to hear the dialog tracks on MID Channel from 9 feet away, soft dialog is better, but then when the music and SFX tracks play, the audio and bass is VERY loud. I would not mind this if I lived in a private home, but in an apartment building, I got a phone call from my neighbors about the BASS. I certainly don't suffer any subwoofer MINUS issues, I bitstream and am ALL HDMI, and my Audyssey setup is about as good as it gets. So the "range" is there, and it sounds like a movie house, but for LATE night movie viewing, I have to figure a way to reduce the BASS output without lowering the master volume, as I would then struggle to hear the dialog track on the MID Channel. I'll have to see if compressing the dynamic range can help in my situation. I am jealous of those that don't have NEIGHBORS to complain, but that's where I'm at.