5.1 Digital vs Pro-logic 2

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5.1 Digital vs Pro-logic 2

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ohmss

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1. August 2006 @ 07:34

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Hi All,

I wonder if anyone could tell me what difference I am suppose to notice when using 5.1 instead of Pro-logic 2.

I have 2 Home theatre Systems, one little Yamaha with optical and a Philips MX5800 which unfortunately has Coaxial. I have my Xbox 360 hooked up to the Yamaha because of the Optical and it sounds o.k but when I changed it over to the more powerful Philips one and listen through Pro-logic 2 quite honestly it sounds better. When Music is playing during a game Pro-logic is much nicer, although speech is not as clear with it as the Yamaha but not a huge difference. Is this because the Philips is a better system or what? People have told me 5.1 should be more clearer, but I cannot notice anything really. When playing games everything sounds like its in surround on both Systems.

I'm sure this is a stupid question, I'm sorry but have no idea

Regards
ohmss

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diabolos

Suspended due to non-functional email address

1. August 2006 @ 09:02

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Dolby Digital 5.1 and Pro-logic II can offer the same surround sound experience if the PL-II encoding and decoding is done properly.

Pro-logic II creates 5.1 surround sound out of analog stereo connections. If the source audio stream contains a 5.1 Dolbly Digital mix like DVD and X-Box game sound tracks it is possible to recreate all 6 channels via the stereo connections. Why? Becasue the infomation for the other audio channels are embedded or multi-plexed, inaudibly, in to the Left and Right audio channels!

So to answer your question your not suppose to hear any differences at all. But if you feel the PL-II presentation sounds better its probably because your Philips is a better receiver across the board.

For more info...

Dolby Digital:
http://www.dolby.com/consumer/technology/dolby_digital.html

Pro-logic II:
http://www.dolby.com/consumer/technology/prologic_II.html

Ced

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My Afterdawn page:
http://my.afterdawn.com/diabolos/

This message has been edited since posting. Last time this message was edited on 2. August 2006 @ 11:21

ohmss

Member

1. August 2006 @ 10:03

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Thanks Diabolas for all your advise and time

Regards
ohmss

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