Amazon.com: American Bass HAWK 15 Inch Dual 4 Ohm Voice Coil 3000 Watt Subwoofer Speaker with 80 Ounce Magnet and Kevlar Fiber Non-Pressed Paper Cone, Red : Electronics
Amazon.com: Skar Audio SDR-10 D4 10" 1200 Watt Max Power Dual 4 Ohm Car Subwoofer : Electronics
Dynavox 165mm Basslautsprecher 4 Ohm, kompaktes Bass-Chassis mit Gummi-Sicke für Selbst-Einbau in Boxen-Gehäuse, für Mittel-und Tieftonwiedergabe, Schwarz, 204206 : Amazon.de: Elektronik & Foto
Amazon.com: 10" Car Audio Speaker Subwoofer - 1000 Watt High Power Bass Surround Sound Stereo Subwoofer Speaker System - Non Press Paper Cone, 90 dB, 4 Ohm, 50 oz Magnet, 2 Inch