They are pretty old like 30 years but they still kick butt. I was wondering how would I set the equalizer settings in my receiver. The Speakers have one Tweeter and a woofer. They are 8 omhs and there is a switch with five settings with one of the settings labled normal. I believe this may be a crossover or something. The tweeter plays the high and mid-range while the woofer is the low end.