A:AnswerAgain this is a center speaker for a surround sound system its range is some high and some low but does not have a lot of bass it will sound hollow if use it as some type of bass speaker if you refer to the PDF manual it breaks down speakers part numbers and placement suggestions so you get proper sound
A:AnswerI get better range from large speakers, with that being said, apartments, condos, town-homes, etc. makes size and power a thing to consider. small speakers work very well, but consider a sub-woofer for base balancing and keep it to a low roar in close communal dwellings, courtesy and all. LOL! Small rooms don't need large, but hard to beat the quality of bass and range in large!
A:AnswerYamaha does not have a core series. I think you might have meant Sony Core series?
The dimensions of the Sony core series are available in the product details section. You can compare the size of these with your Klipsch.
A:AnswerI have a 100-watt per channel amp, so any that can be driven safely by your amp. My left and right channel speakers are $50.00 ,5-insh radio-shack bookshelf speakers from the 80's. Sounded good then, sound great now. Eve better w/ the new center channel. You really need to visit a showroom to decide what sound good to you.