2. home-theater
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Cable tv music analogue or digital?

I was trying to improve the quality of the sound coming from my cable tv box, sometimes I like to listen to the jazz station. I ran a regular rca jack from the analogue outs on the cable box to the analogue inputs on my pre-amp, the sound is ok, but I wanted to improve the sound. so I ran a cable from the digital coax output on the cable box to the coaxe input on my Cary 306/200 cdp/dac and then into the pre-amp. guess what, no audio signal coming from the music channels but I do get an audio signal coming from the regular tv channels. Is it possible that regular tv signals are broadcasting in digital but the music channelis still going out in analogue? what else could it be.
joeb
reubent
7,003 posts
 
Many cable systems only output Dolby Digital, not PCM. So, you would need to send the signal to a "processor", not just to a DAC which converts PCM digital stream to analog.

Check the configuration on your cable box. Some do have a configuration setting that will allow for PCM output instead of Dolby Digital. If in doubt, call your cable company's tech support (good luck with that one!) or contact the manufacturer of the cable box (possibly a better source of information).

Enjoy,

TIC
joeb OP
121 posts
 
OK, What does "pcm" stand for?
jb
jaiello
50 posts
 
You did not say which model of cable box you have but on mine I had to change the output setting from Dolby to PCM to get it to output digital for the music channels. You do this on the set up on the cable box.
joeb OP
121 posts
 
Jaillo,
I have a "Pace" box, I looked in the menu, on on the box and can't see anyway to ajust this.
jb
danlib1
819 posts
 
Joeb: I believe it stands for Pulse Code Modulation. Let's see what those more knowledgeable come back with.
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