Lightweight Wireless Bluetooth Speaker Usb Subwoofer Rich Bass Fm Radio Support Outdoor Square Dance Party - Speakers - AliExpress
ELAC Muro™ SUB2010 (White) Compact subwoofer with optional wireless capability and Bluetooth® app control at Crutchfield
12 Killer Compact Subwoofers - Electronic House
Amazon.com: PyleUsa 10-Inch Low-Profile Amplified Subwoofer System - 900 Watt Compact Enclosed Active Underseat Car Audio Subwoofer with Built in Amp, Powered Car Subwoofer w/Low & High Level Inputs - PPLBX10A :