This is actually a speaker that i purchased here at sonic electronix to replace the original 4 inch c5 speaker that blew out after 3.5 years of abuse. It is definitely a great sounding speaker and i am glad that sonic electronix had it in stock. I also happened to purchase my jl audio C5 components from sonic back in 2012 and a few other electronics, i trust buying from sonic because they stand by the products they sell. Every now and then you get a defective product right out of the box. Thankfully sonic electronix has never accused me of missed using a product and gladly send me a replacement with no problem. This speaker came perfect and worked flawlessly out of the box. It was also shipped to me extremely fast free of charge. Thank you sonic!