Black Bookshelf Pair Of Mountable Indoor Speakers With 400 Watts From Acoustic These are the perfect speakers for any occasion or application. They were designed with durability in mind, so there's no need to worry about rust or wear-and-tear. They make great additions to any surround sound home theater, will fit onto any bookshelf, can be used with any stereo system and are great to use In bathrooms and kitchens. Each speaker can handle 200 watts of power (100W RMS), and has a full range sound and functionality. Included mounting brackets allows hassle-free installation in any location. Mountable Indoor Wired Speakers - Traditional Passive Speaker Design, Simply Drive Power From Your Amplifier Or Receiver High Quality - Full Range Sound Coverage With 2.5" Polypropylene Woofers, Frequency Response Is 150Hz-20 Khz With 88Db At 8Ohm Durable And Mountable - Black Abs Sealed Cabinets With Spring Loaded Raw Wire Connectors And Mounting Brackets. Big Sound From A Compact Speaker Size Of (H X W X D) 3.5" X 3.5" X 4.5" Each System Requirements - Any Amp Or Receiver With Raw Speaker Wire Outputs, Power From Your Amp Should Be No Less Than 20 And No More Than 200 Watts Per Channel, Cl3 Or Raw Speaker Wire To Connect Your Amp To The Speakers