kdross - congratulations on your CS2s. Thiel made more of those than any other model. It is possible that the loud levels did the damage if fed by an amp with insufficient power to deliver a clean signal. It is unlikely that the woofers or any of the drivers being old is the cause of the trouble. Those drivers have rubber surrounds and generally last indefinitely, unless fed a distorted/damaging signal.
Congratulations also on your Classé amps. Your DRs were designed by Classe's founder David Reich who took current delivery very seriously. David moved on to McCormack and Theta Digital. Very good amps, a great match for CS2s.
The fact that your woofers quit (see below) and you used a low-power (?) receiver at loud volumes points to distortion causing the failure. The old Sony played loud is the probable culprit. (Wires are probably not the cause.)
But there are other possible causes or needs.
One probable root of your problem: both your amps and your speakers contain electrolytic capacitors, which have a definite lifespan of 15 to 40 years. They last longer when in constant use. Polarized electrolytics, such as in your amp, lose their bias, especially when in storage. A likely cause of damage is that your caps are leaking, allowing low-frequency power into your signal path and over-powering the drivers. Tweeters and midranges are at most risk, so your woofer failure doesn't match this scenario. BUT, you could be tending a time-bomb. Inside the speakers you can look to see if any of the small, black cylindrical caps have any goo on them. If so, they are definitely failing. If not, they can possibly wait.
I recommend the following. If you like the CS2s, keep them and consult Rob Gillum about the possible need for XO cap replacement. But, you can hear any problems before they do damage. If the caps are dry, cap replacement may not be necessary.
Your amps most probably need service: including new electrolytic caps. I understand that Classe is back in business and can probably service your amps. That vintage amp in that long-term storage situation is highly likely to have bad caps. Classe can talk you through determining whether the caps are leaking (signal or goo).
In my opinion, your gear is worth salvaging and will outperform the large majority of audio gear out there. Good luck and welcome.
