Wide Dispersion Square In-Ceiling. Aluminium Bass And Pivoting Tweeter.FeaturesSpeaker Type: 2-Way In-Ceiling Tweeter: Pivoting 1" Aluminum Dome Woofer: 6 1/2" Aluminum Cone with Dual Voice Coil & Filleted Rubber SurroundImpedance: 8/6 ohm depending on switch settingsSensitivity: 90dB 1w/1mFrequency Adjustments: Front-Mounted 3 Position ±3dB Treble Adjustment Switch & ±3dB Bass Adjustment SwitchFrequency Response: 40Hz - 20kHz ± 2dBPower Recommendations: 125 watts (undistorted)Size x Depth: 8 3/4 " x 8 3/4 " x 4 "Ceiling Cut Out: 7 1/8" x 7 1/8"Simple solutions are often the most effective. In response to requests from the field, SpeakerCraft has taken the technology from the award-winning Custom Round Series of in-ceiling speakers and has created the CSS6 line of square ceiling speakers, which further widens the choice of aesthetic options for designers and customers alike.The CSS6 Three features a 6” woofer and co-axially mounted tweeter and is identical in this regard to its round counterpart in the CRS series.As with the CRS series, the CSS6 Three features the innovative WavePlane™ technology. The WavePlane enhances the speaker’s dispersion pattern, dramatically improving clarity and detail. This allows the CSS6 Three to sound far better off-axis than any other square speaker available.The tweeter in the CSS6 Three pivots, so you can direct the high frequencies toward the listening area. When used as a rear channel speaker in a home theatre configuration, the tweeter can be directed away from the listener, giving surround sound the critical degree of diffusion it needs.Whatever your requirements, the CSS6 Three will provide music of both exceptional clarity and precision almost regardless of where you are in the room.