Polk Audio Atrium8 SDI All-Weather Indoor/Outdoor Speakers (4 Speaker Bundle) Color:Black power management system that features

power management system that features Panamax's AVM (Automatic Voltage Monitoring) circuit and Linear Filtering Technology (LiFT) to provide AC protection and purification

Can be filled with sand to add mass and vibration damping

and USB memory devices (see Details for full capabilities)

Reliable battery life for up to 8 hrs

5” driver is housed in a dedicated and tuned sub-enclosure to ensure the output is not distorted or colored by the flanking woofers

Polk Audio Atrium8 SDI All-Weather Indoor/Outdoor Speakers (4 Speaker Bundle) Color:Black power management system that featuresPrice Match Guarantee Polk Audio Atrium8 SDI All Weather Indoor Outdoor Speakers (4 Speaker Bundle) BUY Bundle of 4 Speakers and SAVE Enjoy enhanced quality sound outdoors with the Polk Audio Atrium 8 DSI All Weather Outdoor Speaker. Polk Audio Atrium8 features a single dual input switch, which allows you to use it either as a virtual stereo speaker or as part of a traditional L R stereo pair when used with a second speaker. Polk Audio Atrium 8