One of the more interesting questions that have come up around here involves conversion of optical audio signals to analog. Let me explain the problem first, and then we will take a look at the solution.
Many new audio/visual devices use a digital optical signal to send audio out. For instance, the Roku Ultra has a digital optical connector to send a signal to an audio system, such as a multi-channel theatre-style sound system, a sound bar, or something like that. Of course, the Roku has an HDMI connection for sending video and sound to a TV, but that is another story.
The problem is that many traditional stereo systems do not have optical connections. Certainly, the older ones do not. Many of us want to connect our new equipment to the sound system we already own and do not want to buy more “stuff”.
What is needed, then, is a device that converts the digital optical signal to analog.
As it turns out, it appears that if you want some sort of converter, somebody has already anticipated your needs and has invented such a thing. A few months ago, I wanted to connect my LG flatscreen to the existing stereo system, but, the LG only had digital optical out. A little research turned up a small box that makes the conversion very neatly.
There are various styles of this type of converter online, but the one I first purchased was listed as something like this, “Digital to Analog Audio Converter Coaxial Coax Optical Toslink RCA L/R Adapter”.
One model of the converted is actually imported form a overseas manufacturer and then sold under a number of different brand names. Prices range from about $12 to about $45. Shop carefully as there is one important point of which you need to be aware.The converter is available as a “kit”, for lack of a better word.
The model I purchased is available as the converter only, as the converter with a USB cable so you can power the converter from a USB source, and a “wall wart” plug-in power supply. The prices are different for each “kit”. Be sure you are ordering the right set for your needs!
I have devised a diagram, below, to help explain what this is all about.
The first converter was so successful that I purchased another one for my “secondary” system down in the Word Famous Web Basement. I am very pleased and the sound is excellent.
