Nasty feedback thru optical cable

[JRS]

This started a few months ago. Almost all of my music
listening is via YouTube that uses the optical output from my TV, then into an audio preamp B4 being passed on to the amps.

All was great for two years and I often watched programming from Netflix and Prime using my rig for audio. Then without notice, whenever I used anything but YouTube, I started to get this deafening stacatto like feedback. If it matters I'm using a 2 year old TCL quantum dot display.

Is there a way to post an audio only or video clip. I get an incompatible file type message with either (MP4)?

 

[DVDdoug]

Then without notice, whenever I used anything but YouTube, I started to get this deafening stacatto like feedback.

"Anything" still means the TV, right?

Check your TV settings to make sure it's putting out PCM (or LPCM which is the same thing). Your "preamp" probably can't decode the surround formats.

 

[Doodski]

This started a few months ago. Almost all of my music
listening is via YouTube that uses the optical output from my TV, then into an audio preamp B4 being passed on to the amps.

All was great for two years and I often watched programming from Netflix and Prime using my rig for audio. Then without notice, whenever I used anything but YouTube, I started to get this deafening stacatto like feedback. If it matters I'm using a 2 year old TCL quantum dot display.

Is there a way to post an audio only or video clip. I get an incompatible file type message with either (MP4)?

I use YouTube and post a video to my YouTube account. It requires mere minutes, is super easy to do and is published/public in as fast of time as you select it to be at the drop down selection menu at the YouTube web page where you post the video(s).

 

[JayGilb]

Maybe your NetFlix and Prime apps updated and default audio settings were modified. Any audio settings on your tv should impact all streaming services.

 

[kemmler3D]

+1 to what @DVDdoug and @JayGilb said. Make sure the audio settings for the optical output are PCM / LPCM and nothing else. I've also had horrible noise coming through the optical output on my TV and it was because the setting changed for no apparent reason.

 

[JRS]

"Anything" still means the TV, right?

Check your TV settings to make sure it's putting out PCM (or LPCM which is the same thing). Your "preamp" probably can't decode the surround formats.

Yes, occasionally BT from a phone or laptop. I'm a bit confused. Does YouTube use a different format, because that works great. Or is it Netflix and Prime that are using a format other than PCM to do multi channel. Now that I think about it, I did change out my Integra AVR for a simple Topping stereo preamp feeding an Audio Control 800 watt amp. Aha, so default output on the premium video streamers like Netflix are using as default a different format?


PS: Floyd Toole was right, I no longer can just sit down and play music while lonly looking around the room.

 

[JRS]

Bingo! I came to the right place. And yes it was on auto instead of forced PCM.

Thx gents. I never made the connection between using an AVR. BTW, those little ELAC DB6 refs could take the full output of the Integra and ask for more, hence the change in amp chains. Really like using the car audio. No way could I find a home unit class D 300x2 into 4 ohms for $250. And it has the coolest remote control of all time. Impossible to lose no matter what state of mind, great resistance and logarithmic volume control. Reminds me of high end stuff like Mac or Conrad-Johnson. Cool little blue LED and believe it or not connects to the amp via old fashioned telephone wire which cost me a buck/ft on Amazon as I threw all that away 15 years ago.

 

[JRS]

I use YouTube and post a video to my YouTube account. It requires mere minutes, is super easy to do and is published/public in as fast of time as you select it to be at the drop down selection menu at the YouTube web page where you post the video(s).

Thx but I'm a bit confused. I share vids all the time, so I just copy the URL and embed it in the response. Cool. Should of thought of it myself. Slipping in my old age.

 

[Doodski]

Yes, copy the video web address link from the web page address bar and then paste it right here in the text comment field and then when you post the ASR comment the web link will automatically turn into the YouTube image and video for people to click on and it will the commence playing right here in the window ASR thread window.