“What are the Red and Blue connections on the back labeled Pa used for? Can they be used for speakers?”
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No, those are two of three plug ins for the COMPONENT VIDEO connection, which are RED, BLUE and GREEN. Generally these are used To bring the signal in from a DVD player etc without an HDMI connection.
Sorry, there was a problem. Please try again later.Hi Lars. The Red/Blue/Green connectors on the back of the LG Full HD 1080p LED TV - 49" Class (48.5" Diag), Model # 49LJ510M or on any TV designated as Y- Green, Pb - Blue and Pr - Red (also sometimes designated as Y, Cb, Cr), are the Component Video connections. What these initials mean is that the red and blue cables carry the color information of the video signal, while the green cable carries the B&W or "Luminance" (brightness) portion of the color signal. They not only pass analog video but are technically able to pass resolutions up to 1080p and can also pass video signals that are either interlaced and progressive. They cannot be used for speakers...^IFVa
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