Amazon.com: Saiyin Bluetooth Bookshelf Speakers for Record Player, Powered Studio Monitor Speaker with 5.2 Inch Woofer, Horn Tweeter and Optical RCA Inputs, Subwoofer Line Out for Turnable. : Electronics
Reference 5.2 Home Theater System with 2x R-625FA Floorstanding Speaker, 2x R-12SW Subwoofer, R-52C Center Channel, 2x R-41M Bookshelf Speaker and AVR-S970H 7.2-Channel Receiver, Black - Walmart.com
Portable Bookshelf Retro Wooden Bluetooth Mini Speaker Subwoofer Stereo Card, Built-in Lithium Battery - Walmart.com
Best Places to Keep Your Subwoofers: Can You Place a Subwoofer on a Shelf?