COMMERCIAL: OSD Audio’s C1090VK is perfect for in-ceiling commercial use in restaurants, hotels, retail shops, office buildings and other indoor locations. SOUND QUALITY: Receive three of these speakers that produce powerful, rich sound or quiet background music for all your needs. The 8 inch dual woofer cones provide incredible audio performance for low, mid and high frequencies. POWER: A dual 70/25 volt transformer is wired to provide 5, 2.5, 1.25, 0.63, and 0.25 watt taps for smooth powered sounds to the ear. It flushes into the ceiling for a subtle, sleek look. VOLUME CONTROL: The volume knob located on the front of the speaker is easy access and allows you to adjust volume level from the speaker as needed to best suit the commercial environment. DESIGN: The 8 inch includes wattage taps via the front dial and rear indicator, making for easy setup with other audio components. It has a 12 inch white metal grille to avoid detracting from your decor. Our C1090 8-Inch Ceiling 70V Speaker is made to produce powerful, rich sound or quiet background music depending on what you needs are. You'll love that it includes 5, 2.5, 1.25, 0.63, and 0.32 wattage taps via the front dial and rear indicator, making for easy setup with your other audio components. It also features 6-ounce magnets and 70V impedance. However, it's the dual 8-inch woofer cones that provide the incredible audio performance. These powerful features capture low, mid and high frequencies for rich, deep sound. And with simple volume controls, you can easily adjust your speaker as needed to best suit your commercial environment.