Amazon.com: JBL Club WS1200 12" Shallow Mount subwoofer w/SSI (Selectable Smart Impedance) Switch from 2 to 4 ohm Bundled with Alphasonik Earbuds : Electronics
Earthquake Sound Tremor-X154 15-inch Car Subwoofer, 1500 Watts
Amazon.com: Focal Sub P 25 FS 10" Shallow 4-ohm Component Subwoofer : Electronics
Audiopipe APSP-1250 12 Inch 800 Watt MAX, 400 Watts RMS, and 8 Ohm Dynamic Mid Range Car Audio Loudspeaker with 2.5 Inch Kapton Voice Coil
Sub 250g 3 Inch Impulse Buy Build (Amazon Prime) : r/Multicopter