“Could I place another L & R channel subwoofer that is not LG to this sound system? If so, how exactly do I do that?”

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• The Subwoofer for the LG 700W 2.1ch Mini Shelf System with Built-in Subwoofer and Bluetooth®, Model # CM4550 has an impedance of 3 Ω (ohms) and uses a modular jack to plug into the CM4550. If the Subwoofer that you intend to replace the existing Subwoofer has the same connector and has the same impedance, then you can replace it. If it doesn't have the modular connector, you'll need to attach one so you can plug it into the socket on the CM4550...^IFV

  Answered by LG Digital Customer Care 7 years ago

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