Pyle KTHSP85SL 4 Room In-Ceiling Home Speaker System w/4 Volume Controls Knob (Silver) (Qty 8) 5.25" In-Ceiling 2-Way Speakers (Silver) - 5-1/4'' Midbass Speaker - 1'' High Temperature Voice Coil - Directable 1'' Polymer Dome Tweeter - 150 Watts Rated Peak Power - Accepts Speaker Wires up to 14-Gauge Frequency Response: 80Hz - 20kHz - 4-8 Ohm Impedance - Cut-Out Dimension: 6 1/2'' Diameter x 2 5/8'' Depth - Overall Dimensions: 8'' Diameter x 2 5/8'' Depth - Control room volume with ease from any room Mounts in-wall - Works with all audio and video systems - Attractive standard and Decora-style wall plates included - 12 soft-touch volume positions for smooth, simple operation - Removable terminal blocks accept up to 14-gauge wire Switchable impedance matching lets you connect up to 16 pairs of 8-ohm speakers to one amplifier - Includes mounting ring and wire nuts for installation - 100W load handling - Up to 4 Separate Speaker Pairs to Your Stereo System Handles 100Watts per Channel w/ Speaker Systems That Have Minimun Impedance of 8 Ohms - Protection Circuitry Keeps It Running Smoothly - Frequency Response: 20Hz-20KHz - Dimensions: 7.48''(W) x 1.97''(H) x 4.72''(D)