That makes me Le Sad. I had a rattling noise in my right driver so I sent it in. Initially they charged me 300 dollars and I sent them the venmo receipt I had. They were satisfied and sent me a label. Then they said it was out of warranty (it was a 2.5mm Susvara) and then charged me an additional 1200.This is not correct. I had no proof of purchase and was only charged $300
Maybe it is 1500 to change generations.