6.5" Stereo All-in-one Ceiling Speaker PLEASE NOTE This listing is for 1 speaker. However this has 2x tweeters and a dual sub built in meaning you have a true stereo sound from one speaker where you would normally have to run a pair of speakers One for the left channel and one for the right. Technical Specification: Woofer Size 265mm (6.5 ) diameter Tweeter Size 2x 13mm diameter (each)Frequency Response 70Hz-20kHzImpedance 8OhmsMax Power 8Ohm 100W RMS Power 8Ohm 50WMounting Depth 76mm Dimensions 86mm x 227mmdia Cut-out required for ceiling/wall 193mmdia Dual Mylar dome tweeters for the best quality sound transferGold plated Spring TerminalsSupplied with Dog Ear Mounts for easy mounting. Overview:A 4-way ceiling speakers which is ideal for use as main or surround sound speaker in the wall or ceiling. The concentric directional tweeter allows the higher frequencies to be focused at the listener to help create a better soundstage. This speaker can be used in 8Ohm/Low impedance systems. 8Ohm Systems:1). If you have an 8 Ohm amplifier, up to1 pair of speakers can be used (2 speakers).2). If you have a 4-8 Ohm amplifier, up to 2 pairs of speakers can be used in parallel (4 speakers).3). If you have a 2-8 Ohm amplifier, up to 4 pairs of speakers can be used in parallel (8 speakers).Fitting fitting is easy and a cut-out template is supplied making it easier than ever to install a ceiling speaker.