As you all know by this point, I redid my entire stereo system this summer. I bought everything where I could find it, and where it was priced reasonably or in stock. Most of my stuff came from Crutchfield or Sonicelectronix. However, I did buy my door speakers and tweeters from Amazon. And my amp from ebay from an authorized shop. I went with Amazon because the speakers were sold by Amazon and shipped by Amazon. There was no middle-man according to their description. I installed the speakers. After a month of trying to get them to sound great (you'd think for normal people that paid $1000 for these, they'd sound really good!!) but just couldn't get the crisp, clear sound I thought they should have. To be honest, they sounded about like the OE speakers, if not a bit worse. I was very disappointed in my time and money that I had spent. Then one day on my Facebook feed, a post from Alliexpress showed up selling "Focal" speakers for $185. Thought to myself, hmmmm....is this the reason my speakers don't sound good? So I started doing research. I finally found a spot on Focals website that stated that all of their speakers bigger then 5" have serial numbers engraved on the magnet or housing. So I finally got some time today to pull the door panel to look at my speaker...and low and behold, no serial number. Focal's website also warns against buying their speakers directly from Amazon or Ebay without it being an authorized vendor. So, I contacted Amazon and they are willing to return my speakers and give me a full refund. I have to call them again to get the authrization code and where to send them on Monday, but I'm going to ask for an hour of labor as well and see what I get... So beware, and do your do-diligence if buying anything of value from Amazon!!