Bose may have done this, but that wasn't the speaker system I was thinking of... It was the same brand that makes those speakers that have combination drivers. That's not the right word....tweeters and mids share the same driver, whatever that is. I think John B or Chess owns a set. At any rate, that's the brand who made them. I think they were about 5K each. I didn't spend much time looking at them.....