I was just reading the technical information on the 1000 watt Carvin head. I then realized I don't know much about this. Anyway if you can help, I'd be grateful. From the Carvin site: "R1000 Power: 2ohms: 500/500w, 4ohms: 350/350w, 8ohms: 225/225w Bridged: 4ohms: 1000w, 8ohms: 700w" The 8x10 Carvin cabinet says it operates at 4 ohms. Isn't an ohm a measurement of resistance? And what does it have to do with amps? What does Bridged mean and how would it affect me if I had the R1000 head and 8x10 cabinet? If the 8x10 cab runs at 4 ohms, does that mean it's only using/getting 350 watts? If it did have to run at 350 watts, would this package be louder than a 500 watt Crate keyboard amp with a 4x10 or 4x12 cabinet? Sorry if this is confusing you, but it's sure confusing me.