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Trusurround XT Question

by sam_wheaton / January 14, 2009 3:00 AM PST

I have an LN40A550 TV connected to a old Bookshelf Stereo Amp. with two speakers using the Audio Out R&L jacks on the Rear Panel of the TV.

The User Manual indicates that "TruSurround XT is a patented SRS technology that solves the problem of playing 5.1 multichannel content over two speakers. TruSurround delivers a compelling, virtual surround sound experience through any two-speaker playback system,
including internal television speakers. It is fully compatible with all multichannel formats."

My question is whether Trusurround XT sound is being put though the Amp. and Speakers as referenced above? In addition, what would happen in the same scenario if the TV Speaker was turned off?

Thanks in advance for the replies.

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Working on it...
by Samsung_HD_Tech Samsung staff / January 15, 2009 4:50 AM PST

Quite honestly, I got stumped on this one.

Our television expert and I were debating this one.

I think your question is asking if the analog output carries the processed TruSurround signal, or if only the digital signal carries it (which would not include RCA). The television's speakers do receive a digital signal with the TruSurround, so I'll try to find out what happens when the analog conversion happens to external outputs.

I'm escalating this question a little higher, so I appreciate your patience while I get this answer. Happy

If your question is different, let me know.

--HDTech

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Response Update
by sam_wheaton / January 15, 2009 6:03 AM PST
In reply to: Working on it...

Thanks for the update. I await your response. Thanks again.

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Headphone Jack Output
by sam_wheaton / January 15, 2009 6:38 AM PST
In reply to: Working on it...

While you are doing the research on the previous inquiry you may want to respond to the same question but this time using the Headphone Jack Output. Thanks.

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Will do!
by Samsung_HD_Tech Samsung staff / January 15, 2009 3:14 PM PST
In reply to: Headphone Jack Output

I should have an answer shortly.

--HDTech

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it might delay the signal?
by yarrjim / January 16, 2009 4:41 AM PST
In reply to: Working on it...

Hi. Thanks for excusing this post, but I posted a similar issue in another thread which might contribute to this one:

http://forums.cnet.com/5208-13973_102-0.html?forumID=146&threadID=317590&messageID=2914129&tag=forums06;posts#2914129

On an LN 40A530 I'm connecting just two speakers (no amp, no receiver) via the Audio Out RCA ports to supplement the sound to a total of 4 speakers, and I'm getting a delay from the internal speakers. Curiously, the external delay is less when I use a different set of Audio Out RCAs on the tv.

I read the same section of the manual, so I've tried disabling the TruSurround, as well as tried various sets of changed settings in combination, to no obvious effect. I think I got rid of it once, but I can't replicate it. Yet, I hope!

Would this suggest that yes, the analog RCA out carries the digital signal, since this would explain why I get a delay from the analog RCA outs?

And if so, what to do about it? It seems it's a delay produced by the TV.

In the second set of RCAs that I plugged into, the delay isn't noticeable until you raise the volume to really add to the external speaker volume. At lower volumes the internal speakers just contribute to the total sound. To me this suggest the delay is less in the second RCA outs but still in the TV.

I'm hoping this little contribution helps get me a solution Happy Thanks!

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RCA
by Samsung_HD_Tech Samsung staff / January 16, 2009 1:23 PM PST

Well, the RCA jacks will convert digital to analog.

The speakers in the TV receive a digital signal. So that transfer from digital to analog likely causes the delay in audio.

I remember one fellow on this forum who was trying to hook the RCA outs and use them as rear speakers, but couldn't because of the analog-to-digital delay.

Does that help?

--HDTech

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No Delay
by sam_wheaton / January 22, 2009 4:32 AM PST
In reply to: RCA

The previuos post did not answer the question. I am not experiencing any audio delays in the configuration I described previously. This issue as I see it is black and white. Is the integrity of the "TruSurround XT" effect maintained when using the Audio Out R&L jacks on the Rear Panel of the TV? I have configured the internal Speakers to be turned off in this scenario. This appears to be a Engineering question. Thanks.

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