If I want to add a center speaker to my Sprout Elac Combo ((I am thinking an Elac C5) , how do I do it?
Welcome to the forum!
The Sprout is just a stereo amp so it is only intended to drive the left and right speakers. Where are you going to get the center channel signal? Do you have a multi-channel receiver or the like? The Sprout does not have a home theater pass-through function but you could feed the left and right channels from a multi-channel receiver through the Sprout’s stereo analog-in jack and use the receiver to drive the center (and surround, if you have them) speakers. You do need a separate amp of some sort for the center channel and a source for the signal (unless maybe you were going to combine the left and right stereo channels, and I have no idea how well that would work).