You need to take and hook up the rca cable from an out source should say out next to the plug, one red, one white there should be an “out” set (red/white) on the back of the cable box, there may also be an “out” (red/white) set on the tv, if there is a set on the tv that is the one I’d use. The other side needs to go into the new jvc speaker reciever into an audio in again it should say “in” right next to the plug, you will want to find the “in” plugs for tv or vcr. Then make sure you set the receiver to the correct setting tv or vcr which ever you used for the “in” set. Then I’d turn the volume up a litte on teh tv and a little on the vcr and you should be hearing sound from the tv, You may also want to look at you tv a little, most semi modern tv’s will let your turn off you tv’s speakers, some do it through a menu option, my panasonic at home has a little button on the back of the tv, back by the inputs that you press to turn the tv’s speakers off. You will probably want to do this for the best sound quality. You will need one set of rca cables that are not already hooked up for this, to work. If you don’t have an extra rca cable laying around you need one.
Let me know if this works.
I love my home theater, I gotta help a guy out. 