These are great speakers for their size. A bought a pair of R-51M (the newer version) these for my daughters bedroom and they do great. They are really efficient speakers so even a 20 watt/ch amp can power these. The response is great from bass to high treble, they sound bigger than they are. The newer version R-51M are considered slightly better than these R-15M, but from what I read they are really similar, The R-51M are normally priced at $290 (I got mine around Christmas for $170). At $110 these are being discounted because they are an older model, but in reality the difference in performance between the R-15M and the newer R-51M is more like a $20 or $30 difference at most. These are a great buy at $110, just Google the reviews. Amazon 4.6/5, Best Buy 4.8/5, Crutchfield 4.9/5…I noticed that Best Buy also clearanced this model out for $110- but they are sold out now.
Just received my pair today - all I can say is that this was the best $ I have spent in a while. Although refurbs, you would never know it from the condition. And the sound is outstanding for a speaker in this price range, performing way above expectations. I set these up in my office with an old Sony receiver and hooked up my DAP - wow! Very happy with this purchase - Woot does it again!