Quote:
Originally Posted by
Bloodwound 
Most of the time you don't. If the movies are mixed in regard that the normal speakers are full range. But still one may miss a lot of bass information as the sounds from the LFE channel are left out whenever mixdown surround sound to two channel occur.
This is simply not the case. ALL SSP's are required to have "Bass Management Configurations" 1 and 2. BMC 2 assumes that you have large fronts, small everywhere else and DON'T have a sub-woofer and the LFE channel is re-directed into the two large front speakers.
Most SSP's fall into the "Top Class" category, which additionally requires BMC configuration 3. Configuration 3 assumes that you have large speakers everywhere but still DON'T have a sub-woofer and now the LFE is re-directed into ALL of your speakers.
Quote:
Originally Posted by
Bloodwound 
Except for some software DVD players, I have never ever seen LFE be included in the mixdown. It is probably because it is "illegal" according to some license, to protect "normal" speakers or some other quirky reason.
Now you are mixing apples and oranges. The requirements for sources (eg, DVD players) are different than the requirements for SSP's.
You are right -- BMC 2 is FORBIDDEN for source components. From the Dolby Manual:
"Configuration 2 must not be used in Multichannel Source Products because it is not
possible to satisfy both reference output level and maximum output requirements in
this configuration. Therefore, special bass management options exist for multichannel
Source products."
But who in their right mind is going to try to put together a state-of-the-art home theater and skip the SSP?
Quote:
Originally Posted by
Bloodwound 
If the Ayre D-5x can do 2 channel mixdown but have an option to keep the LFE-track included, then of course this would solve the problem.
Why would you want to omit the SSP for a home theater?
EDIT: Sorry, I think I missed your point. You are right that an HT 2.0 system as I originally described will be missing the LFE channel. So if you want the explosions, you will have to use the HDMI output into an SSP. It is actually forbidden by Dolby to inlude the LFE information in the 2-channel mixdown on the source component.
There is a way around this however. It would be kind of a pain, but not so much as a full-blown home theater. The source component can still output the LFE information (and optionally the low bass of the other channels) into the subwoofer output. The stock Oppo (and most sources besides the Ayre DX-5!) has an analog output for this. You would then need to add a subwoofer and rig a three-channel preamplifier so that you could control the volume of the sub-woofer channel along with your stereo mains. This would be tricky, but do-able. It might require some special matching of equipment, and probably using only one channel of a stereo preamp to control the sub-woofer. You would probably have to do some work to tie all of this together with the remote. But it could be done.
It would be even more work with the Ayre, as you would have to use an SSP to decode the HDMI to get the LFE channel. All of that processing power, just to drive the sub-woofer.... But it could be done. That way you could add the explosions back to your HT 2.0 system....