We run MB Quart in our sq car. If you do not know how to image your components and how to dial in the amps and crossovers then yes the tweeters could be harsh. Understand I would be what you call a silk dome tweeter guy because I do not like harsh tweeters and if you know how to set up your gear MB Quart's tweeters are very far from harsh. Old compared to new, the build quality may not be at the same level but the new tweeters are sick. If we did run the Quarts then we were going to run ID horns. MB Quarts have a very very appealing price, so I would strongly consider them.