Summary: First things first. Crutchfield is a fantastic company, I've made many, many purchases through them over the years. Thank you Crutchfield. Now on to the review of these speakers. The magnet fell off the back of the speaker! Yes, that is right, I installed one speaker, turned on my head unit, turned up the volume a bit, faded over to the left and it all of a sudden started making a terrible, low volume noise.
Pros: Not one single pro about these speakers... nothing... same price as real speakers, worst possible quality.
Cons: None - they were absolutely the worst product I have ever purchased. I have received more durable and reliable items as toys in fast food kids meals!
Summary: For you Corrado owners looking to replace the rear 4" x 6" speakers, well this is the speaker to have. I have a 93 Corrado and they replaced the factory speaker perfectly. No modifications needed; just remove, replace and install. The plus is that it came with free wire harnesses that allows you to connect directly to OEM vehicle connector. It was just unusual that the harnesses were sent separately.
Cons: Not much to say other than there could be a little more base coming out of them. But other than that they sound very good. I would recommend them.
Summary: These were bought to replace the original speakers from a 1986 Porsche 911. They are a perfect drop-in fit. I was even able to use the original mounting hardware from the Alpine speakers. Because of the very shallow mounting depth these were the only ones that could fit and they do fit perfectly. The sound is great considering they are only a shallow 4x6 speaker. The rep at Crutchfield suggested these speakers and he was absolutely correct.