Power Dynamics NCSS5B Low Profile Ceiling Speaker 2-way 5.25′′ Inch Black The Power Dynamics NCSS5B is a 5.25′′ Inch High Power Ceiling Speaker in Black that offers superior HiFi sound quality. With an Output Power: RMS of 20Watts, the NCSS5B offers a frequency response between 70Hz – 20kHz. The speaker features a ½’’ Mylar Tweeter and a 5.25’’ Ferrite Magnet Woofer. This combination provides you with an SPL (Sound Pressure Level) of 88dB that delivers rich high-quality audio. The NCSS5 is a Passive 2-Way Coaxial Speaker with an impedance of 8 Ohms that requires amplification. The speaker has a quick fit system that offers fast and easy assembly. Furthermore, the speaker features a Black Magnetic Fit Steel Grille that provides you with a slim and discrete low-profile sleek finish. This makes the NCSS5B ideal for use in your living room, veranda, garage, showroom, cafe or restaurant. Simple Installation Installation of the NCSS5B is straightforward and simple. All you have to do is drill a hole in the ceiling big enough to fit the speaker. If the PA system is turned on, turn it off before making any connections. Once turned off, connect the speaker via two cables to the sound system. The speaker then fits into the ceiling hole and you use the swivel clamps to secure the speaker. The locking tabs will then swivel into the rear surface and lock the speakers into place. Lastly, place the Black metal grille over the speaker for a discrete low-profile sleek finish. If you are connecting several NCSS5B speakers, make sure that all speakers have the same polarity and that the amplifier is not overloaded. The polarity is conveniently identifiable by Black (Negative Pole) and Red (Positive Pole). It is a good idea to clarify how many speakers you would like to install in the room prior to installation. This Ceiling Speaker is also available as the NCSS6B (Low Profile Ceiling Speaker 2-way 6.5′′ Inch Black) and NCSS8B (Low Profile Ceiling Speaker 2-way 8′′ Inch Black).