So I've had my set of Astro A40 headphones for over 3 years now, and just over 4 or so months ago the went on me :/ So Thanks to the community here, I got myself a pair of Sennheiser HD 518s and love them, but It got me thinking as to what may be wrong with my A40s. So I popped them open and there appears to be no physical damage. No holes in the driver, no burnt or ripped wires, nothing! But the left side is a LOT quieter than the right. It still plays audio, but very quiet and sorta muffled. Any ideas on the cause of the issue, and / or fixes? I am not opposed to any soldering, so any advice is appreciated.
EDIT: It's also almost as if it's lost its mids and highs but retained bass.
Edited by oTurtlez - 2/21/13 at 10:45pm