Speaker - 3 Diameter - 4 Ohm 3 Watt : ID 1314 : $1.95 : Adafruit Industries, Unique & fun DIY electronics and kits
2Pcs 3 Inch Sound Music Full Range Speaker Driver 8 Ohm 15W Loudspeaker Units DIY Home Amplifier Speaker Sound System(Square 8 Ohm Speaker) - Newegg.com
25 Ohm Snubbers | Zu Audio | Hi-Fi audio speakers and cables hand built in the USA
Small Mini Audio Speaker Speaker 4 ohm 3W With Cable 10cm 20cm 30cm 40cm 50cm | eBay
Amazon.com: 8 Ohm 10W Full Range Speaker, Long Box HiFi Subwoofer 40mm Dual Magnetic DIY Audio Loudspeaker Horn Subwoofer for TV, LCD Monitor, PC, Home Audio Stereo : Electronics
MA6E - 6.5" 50w RMS 8 Ohm Mid-Range Speaker
Speaker 2" x 3.5" 4W 4 Ohm Hobby Project TV Radio US Seller | eBay
Ohm Acoustics Loudspeakers: The Budget Audiophiler - ecoustics.com