If you have a AKG 240 clone (Axelvox, Samson, Superlux) in your possession - check the cable where it connects to the headphones.
In most clones, it just hangs on the solder joints inside. Fix that cable inside so that it won't snag and rip off it's connections - it might save you from having a flaky connection in one of the speakers.
To open most of those headphones up, gently pry a panel on the side, and unscrew a small bolt that holds the bracket.
If one wants to, you can mod them with Y-cable instead of single cable, just unsolder the leads that soldered onto rods that are making up the headrest assembly, from both sides, attach the Y-cable, and close it all up so that cable is fixed underneath that bracket.
Hope this helps someone. Also, one might print a new bracket to old in a wireless adapter (like Fiio BTR5 or similar) and replace cable with shorter one. Thus, ending up with a neat wireless headset.
P.S. Same thing can be done with a lot of fullsize AKG headphones / headsets and clones. Just be careful and don't brake any clips that hold some of those headphones together.