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Andy0568

macrumors regular
Original poster
Sep 4, 2010
128
0
Wirelessly posted

I have a Denon receiver connected to a Samsung unc46c6400 LED Television via HDMI and the audio is noticeably behind the picture on my Apple TV. The audio coming straight out of the TV was in sync before connecting the receiver. This problem is driving me bonkers and I'd sure appreciate some help
 

GilesM

macrumors 6502
Oct 17, 2008
323
0
Hi, I also have a Denon amp and a Samsung LED TV and the audio sync between the two has been driving me nuts as well.
The only thing I found to fix it was to adjust the audio delay on the Amplifier to roughly 26-27 miliseconds for all incoming sources.

This issue exists with al my devices, Apple tV3, Cable Box, PS3 for Blu-ray.
Adjust the audio delay on the AMP to around 26 ms individually for each source (they will ot all be the same)....

This is because the Samsung TV's do so much work on the picture, it puts the sound out of sync.

Good luck!
 
Last edited:

steve-p

macrumors 68000
Oct 14, 2008
1,740
42
Newbury, UK
Modern TVs and AVRs also have Auto Lip Sync option, although I can't say it's worked for me with any source.
 

Andrew07

macrumors 6502
Apr 25, 2007
282
0
I'm using a very short HDMI cable. Switching to game mode/60hz did not fix the problem. I've tried adjusting the audio delay but that too does not work. This may be a stupid question, but since the audio is already delayed after the picture, don't I want to speed it up instead of delaying it further?

GilesM, have you tried using the optical out on your television?
 

gpiney

macrumors newbie
Dec 7, 2010
15
0
Wirelessly posted

I have a Denon receiver connected to a Samsung unc46c6400 LED Television via HDMI and the audio is noticeably behind the picture on my Apple TV. The audio coming straight out of the TV was in sync before connecting the receiver. This problem is driving me bonkers and I'd sure appreciate some help

How exactly do you have everything hooked up? You should be have you ATV hooked up to your Denon via HDMI input. TV should be hooked up to HDMI output. There should be no delay. I have Cable, ATV, BluRay player all hooked up this way and have Zero delay.
One thing. Make sure your Audio Decoder on the receiver is set to Auto.
 

Andrew07

macrumors 6502
Apr 25, 2007
282
0
How exactly do you have everything hooked up? You should be have you ATV hooked up to your Denon via HDMI input. TV should be hooked up to HDMI output. There should be no delay. I have Cable, ATV, BluRay player all hooked up this way and have Zero delay.
One thing. Make sure your Audio Decoder on the receiver is set to Auto.

The Denon receiver's HDMI OUT is going to the Samsung's HDMI IN
Each of my other components (Sony BluRay, AppleTV, Xbox360) are going into the HDMI INs on the Denon

Before getting the Denon receiver, I had a Sony surround sound system connected to the "Audio Out" jack on the Samsung and it did not have any audio delay
 
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marzer

macrumors 65816
Nov 14, 2009
1,396
120
Colorado
What happens if you connect the ATV straight to the TV? And connect the TV optical out to the receiver (or even try optical out from the ATV to the receiver)? Do you still get a delay? Of course you'll want to disable the TV speakers if not done so already.
 

alFR

macrumors 68030
Aug 10, 2006
2,833
1,068
Most DTS systems have an option to set a delay, that's how I fixed mine...It also depends on the length of cables...Shorter is best.

Considering electrical current flows at the speed of light you'd need a bloody long cable for that to make any appreciable difference...
 

dougeb

macrumors newbie
Mar 7, 2010
22
0
Pleasant Hill, CA
I'm using a very short HDMI cable. Switching to game mode/60hz did not fix the problem. I've tried adjusting the audio delay but that too does not work. This may be a stupid question, but since the audio is already delayed after the picture, don't I want to speed it up instead of delaying it further?

GilesM, have you tried using the optical out on your television?

I agree here. The sound is ahead of the picture. Problem is Video delay.

I have same problem occasionally with u-Verse Box.
My older Sony Bravia LCD does not have a Audio Delay, so I have to live with it until I can get Equipment that can sync Audio & Video.
 

Andrew07

macrumors 6502
Apr 25, 2007
282
0
What happens if you connect the ATV straight to the TV? And connect the TV optical out to the receiver (or even try optical out from the ATV to the receiver)? Do you still get a delay? Of course you'll want to disable the TV speakers if not done so already.

It's an even more noticeable delay set up this way :mad:
 

Andrew07

macrumors 6502
Apr 25, 2007
282
0
bump. sorry, still haven't figured it out. no response on the AVS forum and no response from Samsung
 

mic j

macrumors 68030
Mar 15, 2012
2,663
156
Hi, I also have a Denon amp and a Samsung LED TV and the audio sync between the two has been driving me nuts as well.
The only thing I found to fix it was to adjust the audio delay on the Amplifier to roughly 26-27 miliseconds for all incoming sources.

This issue exists with al my devices, Apple tV3, Cable Box, PS3 for Blu-ray.
Adjust the audio delay on the AMP to around 26 ms individually for each source (they will ot all be the same)....

This is because the Samsung TV's do so much work on the picture, it puts the sound out of sync.

Good luck!
I used to have a Samsung DLP and had the same sync issue. I have since moved to a Mits DLP and the sync problem is gone. I agree with your assessment of the Samsung slowly processing the video stream. That was the current thought on the AVS Forum at the time too.
 

GilesM

macrumors 6502
Oct 17, 2008
323
0
finally - i fixed the issue on my ste

So,

after much fiddling, i set my amp to delay the sound for 100 (milliseconds) for blu-ray sources and now it is just fine.
For TV (which is fed from the TV via an optical cable) the audio delay is set to 0.
I had this set previously to a delay of 28-31 ms, but this has been bothering me for months (as you can see) today I finally tries a setting of 100 ms and this works for me.

it may or may not be the right setting for you, but give it a go.
 
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