Summary: These speakers are very efficient and can be driven with a 20 watt amp. The reason they're so efficient is the horn mid-range and tweeter. They sound like they're shouting at you. The bass is ill defined and I just could not get these speakers to sound good. I'd keep looking.
Summary: I had a pair years ago, sounded great and built like a tank with Birch Plywood, Just got a pair and they are half the speaker they used to be, i.e. they still sound great, but they are built like crap using MDF and glue guns.