I've got a pair of Sennheiser HD650 headphones and recently I noticed a "vibration" in the right ear when bassy/low-frequency music was being played. I thought this was the foam insert since it was ripped. I replaced these but it hasn't helped. My current guess is that it's the driver.
I have gone on the Sennheiser but I can only find Dynamic neodymium capsule. Are these the same things?
If they are, should I buy 2? My current pair are 8+ years old (so when they first came out) and I've read that the new drivers have a white "backplate", which the image on the website has. I assume this would mean I'd have different drivers in each ear.
I know Sennheiser have a one-price replacement service but it doesn't look like I'll be getting proof of purchase since I was gifted these and the original owner hasn't found the original receipt.
Thanks for any help provided,