I would suggest that you re-cable one of your existing units. Here are some links that might help:
If you have no soldering experience and don't feel comfortable, maybe you could also inquire as to whether Brian from BTG Audio could do it for you.
thanks a lot. Appreciate the reply. I've actually sent several px100's to somebody who knows how to handle a soldering iron. He repaired them and they broke just as quickly. the problem is not always at the connection point or jack plug, but i often catch the cable in a zipper or even in the folding joints of the headband itself.
So unless I can somehow use much thicker cables, and from the instructions it looks like I can't, I'll probably give up on these which really is a terrible shame. So wasteful.
You can! One of my portables (my HD 228 I think) was recabled with a 3mm or 4mm A-T cable and a Neutrik terminator for durability's sake. I think that in the case of the PX 100, some modding might need to be done in terms of increasing the bore of the cable outlets in the cups, but I don't imagine it to be impossible at all.
BTW, if you would be open to considering a recable, you might want to give Brian a call or shoot him an email. I know that, in addition to recabling, he has modded headphones for people before. He might have some insights on how to go about it.