Want to add receiver/speakers to cable tv coaxial

My daughter is away at college and her roommate essentially blew out the speakers on her nice, digital TV through high volume levels. She gets a dorm cable signal with a hundred channels or so through a standard, f-type coaxial connector, but I don't know if the signal is analog or digital (I guess I should assume digital, since some of the channels are hi-def and the tv tunes them internally). I'd like to give her my old stereo receiver and a pair of nice speakers to give her audio a boost when watching TV/DVDs, etc.... but need a little advice on how much gear I need to buy to make it happen.

First, the receiver doesn't have a direct f-type input as some of the older home theater systems did. It accepts standard L/R RCA plugs for various components. The TV has many different inputs, including HDMI, RCA and Coaxial F-type but does NOT have any audio pass-through or OUT ports of any type.

So... do I need a cable box, which will split the audio off and run that into the receiver or something else? Thanks.
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More about add receiver speakers cable coaxial
  1. If the college cable system has a cable box available then that will have analog audio outputs (hope they don't charge for it). If the TV has no outputs (including headphone) then you might need a new TV to get it to work. You will also need an analog to digital converter to feed the digital audio out from the TV to your old receiver that I assume does not have digital inputs.
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