I notice that if set to "Pro Logic" a non Dolby encoded CD is badly reproduced.
If I set on "Lt/Rt direct" I notice that front music is played from left and right channels with surround extension.
If set to "Non-Sync" surrounds stay mute.

Why this? How the processor manage the signal in "non sync" and how in "lt-rt direct"?

Bye,

Darn, I'll have to check this. You'll have to wait until Tuesday night if nobody else knows this...

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1. Input set as "Non Sync". The right and left channels of CD are played by front left and front right channels; no surround.
2. Input set as "Lt/Rt Direct". Front left, right AND surrounds channels play the music. Center channel stay mute
3. Input set as "Pro Logic". It depends from CD to CD but usually 90% of music come out from Center channel and surrounds. Left and right channels stay very low.

Question: what is the difference from "Non Sync" and "Lt/Rt Direct"?

Lt/Rt means Left Total, Right Total. It's the final film soundtrack with the Dolby NR and matrix (for optical sound) applied.

If you were running a show with interlock dubbers (for unmarried prints) you would want to feed the signal from the dubbers rather then the film's soundtrack (since it has not been added yet.) Those connections allow this.

Yes, enable the Pro-Logic on your non-sync.

The surrounds will "de-code" just like in the "non-sync" format.

Depending on the program material, left and right channels may or may not play. If you are using modern music material for intermission music, chances are that they will.

Two added bonuses are that the center channel really firms up the vocals on the material and the sub-woofers are enabled and will play.

While the accuracy of the playback may or may not be perfect as far as the recording studio intended, the over all dynamics of the sound are impressive.

Somebody shoot me here if I'm wrong here, but most modern music is recorded with a video in mind.

Since most home systems now have surround sound, and most of these systems incorporate Dolby Pro-Logic, it stands to reason that CDs will have encoding present.

Even where encoding is not present, the Pro-Logic tends to add artifacts that make folks go "Ooooooh!" and "Ahhhhhhh!"

When this happens, you still have an impressive demonstration of the sound system's dynamic capability. Just one more instance where customers realise that they are listening to something that they can't get at home.

Don't get me wrong here, the cinema (film) play-back should be exactly what the director intended! But the intermission music?...

I recently over heard a conversation by a friend's daughter regarding a "Dixie Chicks" song. She was telling her friend that she just "HAD" to hear it at the theatre.

We (as an industry) strive to be accurate in all aspects of presentation! In the film formats, we should.

I don't think it is a big sin if we dress up the intermission music a bit.

Modern cinema auditoriums possess the power capabilities of entire rock concerts from previous eras! (for the same sized room)

It used to take multiple semi-trailers full of tube amps to equal what a single rack can do today. (Speakers are another rant)

To quote the late Chris Farley.........

"Let the boy use the subs!!!"

The alternative might just be "living in a van, down by the river!!"

Hey!! If Carmike and Regal had discovered this sooner................... *grin*

While the director has control of every aspect of film sound, he never asked to pick or choose what we use to keep our sound systems busy between shows! It's the same EQ! Just let all channels play!

I kinda like listening while I pick up trash.

I listen to most of my music in my car so I don't have a pro-logic circuit. When I am at home I don't use a pro-logic circuit for my CD player. There is (of course) much better front channel seperation so I think it sounds better.

"Pro Logic" was the only format I could see that would turn the sub output "on" in the non-sync mode.

So far, I haven't heard anything offensive in my applications.

Is there a way to enable the subs while staying in the LT/RT decoding scheme?

Russ

press: menu / system setup / format configuration / 'build custom format' and select a User format number.

press: 'copy from existing format' and dial up format 60.

press: 'more' (lower right SK8)
press: 'opt-decode config'
press: 'bass extension' and dial up 'L/C/R to Sw'
press: 'back' (lower right SK8)
press: 'save new format'

When you are through, get to the 'build format selector' screen and choose 'assign formats' and follow instructions... put your user format on the button that you want.