Polk Audio Atrium8 SDI All-Weather Indoor/Outdoor Speakers (4 Speaker Bundle) Color:Black Can be filled with sand

Can be filled with sand to add mass and vibration damping

Then later you can switch the amp over to your main speakers when you get a sub amp

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

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Polk Audio Atrium8 SDI All-Weather Indoor/Outdoor Speakers (4 Speaker Bundle) Color:Black Can be filled with sandPrice 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