Hello Anna, First off the 50ft length is not the issue. An S-video cable can go 150 Feet easily. But an S-video cable is not the proper cable for HDTV. You need to use either component cables, DVI or HDMI cables to display HDTV on your HDTV. If your satellite receiver does not have any of those connections than it is not an HDTV satellite receiver. Talk with Dishnetwork about the proper HDTV receiver to use.   « less

That's not true. They must come with a caoxial input if they have a built in HDTV tuner. Look again!

I can help you with this confusing situation. In order to be able to see true HDTV picture quality. You must use one of the following types of cable connections to get the High Definition resolution. The first type is called component cables (3) which are colored RED,GREEN,BLUE. These only contain the video signal in analog. You need to connect the audio seperately. The second type is called DVI (Digital Video Interface) it is one connection. It also carries the video signal only. It is a bulky connector. The third type of connection is called HDMI (High Definition Multimedia Interface)it is the latest and best connection of today. It carries a true digital only signal with the audio as well. It is the smallest of all the connectors. It can also be adapted with a converter to DVI. But then you lose the audio capability having to run it seperately again. The only negative is that it contains the HDCP (High Bandwidth Digital Copy Protection). This can prevent you from playing, copying or receiving unauthorized programming.   « less

Well Carla, This could be one of many things. But the best way to start to trouble shoot this, if you haven't done so already is to check that all the connections are good. The next thing to try is to eliminate the Denon receiver and run audio cables directly to the TV assuming your plasma has built in speakers. This would determine if the cable box is putting out audio. If it is then you need to now check the Denon receiver. Try switching the audio to a different input on the receiver. If you still haven't found the problem then check that the mute is NOT turned on. Also check the the Zone 1 output is on. Next check the input settings on the receiver to be sure the the correct digital input is assigned to the correct audio source. If you haven't found the problem by now. Then it is time to give up and send the receiver in for a checkup.   « less

Well KM, RG6 is the best for this. But there are more than one type of RG6. The best is Solid Copper Center conductor. This is now required for all new DirecTV installations. If you are running it a total length of 105 feet, you should be fine with what you have. It is when you run it longer than 150 feet that you may start to have problems. Good Luck.   « less

Just take the coaxial output from the receiver. Put a splitter on it and connect one of the runs to another room.

No you can't. They are incompatable.

Yes Sean, That should work.

Hello Raj, 6 pairs of speakers is too many for the system without an impedance matching speaker switch to feed the speakers with. I don't have enough information from you as to what your audio source is and how it is connected to the amplifier. You may be using an optical or coaxial audio input that is not assigned to your source. That will not give you any sound out. The other possibility is that you may have the mute turned on. That will turn off all audio out. Check those things and read the manual carefully to understand the setup of the unit.   « less

NO, THAT WILL NOT CAUSE ANY ISSUES AS LONG AS YOU TAKE THE SATELLITE DISH OUT OF THE CIRCUIT AND DON'T USE ANY MULTISWITCH IF IT IS IN THE CIRCUIT.   « less