No LCR bar is not the same as "soundbar".Pinnacle QP15Def Tech Mythos 10(if not it is the 9 or 7 or...)BIC has one in the PL series.Leon (out of Michigan) makes them custom sized exactly for your TV. Google "Leon 414"
Yes, your front three wires connect to it. And, depending on what mount you have(brand), there should be a "center speker mount" that you would use. Essentially attaching this right to the TV.Chief and Sanus models can work with pretty much with all other brands of mount.Look for the Chief PCCCA2 (on my phone so my search is limited, but the PCC i gave is close enough to find it...so you'll know what to look for).