I've owned these speakers for decades and I've always been very happy with them. These are high quality heavy duty speakers with 10 ounce magnets. Maximum power is 60 watts and the impedance is 4 ohms. The enclosures are made of aluminum. They're a bit scratched up but are in good working order. I've experienced hearing loss in recent years and I don't listen to music much anymore so I offer these here. I'm including a Radio Shack speaker selector switch that can turn up to 3 sets of speakers on or off.