Doransdome,
I used to have a large nightclub gig ( closed at the end of 2010 ), and the Owners had their satellite company come in and prewire the club's TV's when they opened. Then the Owners ran the adapter cable for DJ & KJ convenience... my connection was just what you are talking about... laptop>vga to RCA adapter>RCA cable spliced to House RCA input...
Now, what the satellite company sold them is a Pico Macom Audio Video Modulator, Model PCM55SAW
http://www.mjsales.net/items.asp?Fam...265&Cat2ID=117 , that was adapted to handle the clubs 7 flat screens, of various sizes. The cable run to the stage was about 50 to 60 ft. from the junction box behind the bar, and was just a standard RCA cable with one splice. ( I Cringed when I saw what the Owners had used as the Video splice cable, i.e. 2 Radio Shack 25 ft. Audio RCA cables, with the Red/White plugs, spliced together... I had to remember which lead to splice into each week... was it the red one or the white one? ) You could run Karaoke or DJ Video to 1 TV or any combination up to 7, were available for my show. I'm sure they probably had a video amplifier hooked in also, but I never had a reason to check what model, if any, that the satellite company used for the multiple TV's...
Never had a problem with this set-up, and the picture quality, was above average because of the new flat screen tv's, and this high quality Pico Macom Modulator that I now have ( They made it a gift to me when the club closed down, because of a greedy landlord that doubled their rent, after the first year! ), and will await to use it again, when the need arises!
I see the previous club owner all the time, and will ask him if a video amplifier was used in connection with this modulator that they gave me!
