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Help: demodulating audio from Rf (cable tv)

post #1 of 5
8/10/06 at 1:45am
Thread Starter 
Hopefully you guys can help me out here. I've got my surround sound system all hooked up and I can watch DVDs and VHS in 5.1 or ProLogic II (simulated). My surround sound receiver has the following inputs: optical, coaxial, and RCA. I've been attempting to devise a way to get the audio from cable TV and run it into my receiver, but its my understanding that I need an RF-demodulator of some sort. I recently tried a friend of mine's digital cable box which had digital outputs and it worked like a charm (on some channels due to the fact that I used coaxial, so i was limited to the digitally broadcasts channels). I have also looked into the option of a new DVD player that has RF-in and RCA-outs, but i am concerned as to whether the RCA-outs will only output the audio from DVDs and exclude the audio from cable TV. I just need any means to get Cable TV audio to my reciever so i can feed it prologic II and get a nice surround sound for when im watching the tube. How do some of you have your cable TV audio incorporated into your surround sound systems?
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post #2 of 5
8/10/06 at 10:07am
does your TV have rca outs on the back? Most newer ones do.

I don't think there's a such thing as a (quality) DVD player with RF in. The other option is a cable box like you mentioned. Call your cable company they may provide them for a very low charge or possibly free.

I think, but wouldn't swear to it, that most of the RF converters you see in the stores are modulators, not demodulators. Basically a cable box is a demodualtor becuase you still need the tuner, etc to change channels.
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post #3 of 5
8/10/06 at 11:48am
Thread Starter 
Thanks for the response jefemeister. Actually, my tv is old and therefore has no RCA outs. So old, in fact, that I have to use an RF modulator to connect it with my DVD player (tv only has rf-input). You are right when you say that most of what you find in stores are rf modulators, which I have. Video quality is obviously not my primary concern, but audio is. A cable box (general term), or a new TV sounds like the answer.
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post #4 of 5
8/10/06 at 8:57pm
yeah, depending on how large you want to go, replacing the whole TV may actually be the cheapest solution to boot. Especially with "back to school sales"--a quick search brings up 27" flat tubes for $300 @ Circuit City.
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post #5 of 5
8/13/06 at 1:17pm
Thread Starter 
I just bought a used tv from my buddy for $50 cause he needed to get rid of it, and once I got it home I realized what I had forgotten this entire time... the headphone jack. Wow, i'm an idiot. Dolby Prologic II works great now, and I've got a new tv as well.
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