The connectors on RCA cables typically come in red, white, and yellow. Those colorful connectors aren't just there for show; each color has an important function — ensuring the correct ...

75 ohm. Get RG-58 or RG6 coaxial cable, and then get a set of strippers and an F or S fitting crimper. RCA fittings are about $2 each, and do not require soldering. RG-58 is 50 ohm. RG-6 is 75.

Monoprice has RCA cables in 6", 1', 1.5', 2', and 3' lengths. If you needed to go 80 feet and your only option was 100', I'd support your effort to not have 20' of slack wound up somewhere.