A:AnswerHello Andy, if you mount the HW-C450 upside down, you may experience a loss of audio quality since the speakers would be facing down to the floor and not facing outward. No, you can not reverse the channels. ~ Samsung Solutions
A:AnswerGolfCzar - Please give us the opportunity to better assist with this by reaching Samsung Support at: 1-800-SAMSUNG, 8AM - 12AM EST, 7 days a week, or Chat with us on Samsung.com: https://www.samsung.com/us/support/contact/
~ Samsung Specialist
A:AnswerReturn to where purchased, it's supposed to be included with your purchase. They may give you one free, or you can exchange for new system that should include it.
A:AnswerYou should be able to add (pair) an additional wireless subwoofer from your smart TV. You might be able to add additional speakers via HDMI cable.
A:AnswerHi there! Yes, however, since the HW-C450 Soundbar does not have an HDMI port or passthrough, you must have the Fire Stick connected directly to your TV. ~ Samsung Solutions