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As I understand ARC technology it requires an HDMI connection btwn the tv and soundbar. This soundbar only works via bluetooth or optical cord. Before my purchase I called LG customer service and got a live person who verified that the soundbar was compatible with my tv. The rep also informed me that the soundbar kit included the optical cord.
Sorry, there was a problem. Please try again later.The LG 2.1ch 300W Sound Bar with Wireless Subwoofer and Bluetooth® Connectivity, Model # SK4D does not have any HDMI ports on it, but it does have an Optical Digital Audio Input that you can connect to the Optical Digital Audio Output on the LG 47" Class 1080P LED TV with Smart TV (46.9" diagonally), Model # 47LN5700. ^CP
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