Top positive review
One person found this helpful
Does what it claims
on July 23, 2013
I had no prior experience with digital optical cables. These connectors are on almost all newer equipment and are part of the landscape, but I never gave them a second thought.
We purchased a new TV (an LG HDTV - 32LN5300) to upgrade from a failing tube model. I had a mess of interconnections and I used the ability of my stereo receiver to switch audio and SDTV signals.
Since with the new TV set I went straight into the TV with HDMI cable from the Roku and the DVR cable box, we had to switch both the stereo receiver source and the TV source in tandem in order to get picture and sound from the stereo.
So I noticed that the TV had an "optical out" connector. I also (stupidly and slow wittedly, like "duh") noticed that my JVC RX-778 receiver, vintage 2000, had a couple of "PCM digital inputs" with little square plugs to protect the jacks.
I checked up on both the TV and the receiver, and lo and behold, both devices used this fancy new digital optical thingie.
So I ordered this cable with the idea that, hey, it's only $5 if it doesn't work.
I had read the reviews already and I avoided the rookie mistake of leaving the protective caps on the ends. I plugged each end in. The stereo end went into the "DVD" optical input on the receiver.
Contrary to comments here that these cable ends sometimes fall out, I found that you have to give each end a firm push and they will snap pretty decisively into place.
No sound. I kept pressing the "Digital/Audio Mode" button on the receiver and nothing happened. I unplugged the stereo end to check. The end glowed red - so I knew that the audio (or something) was being sent from the TV.
I fiddled with the stereo controls for a bit and I stumbled into a setting that apparently paired two of the "source device" settings with the two digital optical inputs on the back of the box. Apparently this receiver supports a wide array of input types, including some that are now obsolete, like magnetic disc, so this is a configuration item that wasn't very obvious.
Once I did this and selected DVD for the optical input, I pressed the "Digital" button and the display on the receiver changed to say "DVD DIGITAL". Some new status lights I never saw before came on. And I got the TV sound!
I then changed the TV over to the Roku box. I got sound through the receiver without having to change its setting.
So, the moral of this story is:
If something's not working, you can take a quick look at the output end to see that a light signal is being output. (Different than wired audio where you can't "see" an active signal.)
Carefully and methodically check the mode settings of the device that receives the input. Sometimes the settings that enable this audio are rather complex.