Polk Atrium 8 SDI is one White passive loudspeaker for outdoor installations. Its dual-input design can reproduce left and right audio channels through one cabinet, or operate as one channel of a larger system when connected and set as instructed in the owner’s manual.

• One 6.5-inch dual-voice-coil woofer and two 1-inch anodized aluminium dome tweeters.
• Single/dual-input switch with two pairs of gold-plated 5-way binding posts.
• Water-resistant PowerPort bass venting and a mineral-filled polypropylene cabinet.
• Speed-Lock mounting bracket for horizontal or vertical positioning and aiming.
• Manufacturer nominal impedance: 8 ohms. External amplification is required.
• Manufacturer total frequency response: 45 Hz–27 kHz; sensitivity: 91 dB at 1 W/1 m.

Includes one White Atrium 8 SDI speaker with its mounting bracket and knobs. Additional speakers, an amplifier and speaker wire are not included. Use suitable mounting fasteners for the installation surface and follow the owner’s manual for mounting and wiring.