Amazon.com: PRV AUDIO TW700Ti Super Tweeter, 4" Titanium Bullet Super Tweeter 8 Ohm Black, 1.5" VC Pro Audio High Frequency Driver, 107dB 120 Watts RMS, Built-in Polyester Capacitor (Single) : Everything Else
Amazon.co.jp: Sound Storm EV4 X 1000 Evolution 1000 – Watt Full Range, Class A/B 2 to 8 Ohm Stable 4 Channel Amplifier with Remote Subwoofer Level Control by Sound Storm Laboratories : Automotive
Amazon.com: Par faital Pro 8 FE200, 4 Ohm, 8" Woofer de 95dB Midbass voz altavoz de repuesto : Electrónica
Amazon.com: CQRobot Speaker 3 Watt 4 Ohm Compatible with Arduino Motherboard, 2.54mm Dupont Interface. It is Ideal for a Variety of Small Electronic Projects. : Everything Else
Goldwood Sound, Inc. 70W 8 Ohm Shielded 4 and Quot Speaker : Amazon.in: Electronics