You cannot tell if they are any good by looking at them. They will be out of spec by now, that's almost guaranteed after all these years. Capacitor kit here. Martin

Hi Martin. Thank you for the reply, I will look into that kit. I ran in to another problem that you maybe can help be with. If I play anything on the speakers, the orignial bass woofer is not playing, but if I take a bass woofer unit from another speaker it will play. i also tried the other speaker, that haven't been restored yet, and there is no sound either coming from the bass woofer.  

The very thin leads from the cone to the voicecoil tend to break under the lip of the center dustcap. It's quite common for Beovox S120 and Beovox MC120.2. Most can be repaired if you work carefully. Martin

Hi Noid I hope by now that you managed to repair the woofers and orderd a recap kit from Dillen. I can only highly recommend changing out the caps as it opens up the speakers considerably and realy make them sing. they are a wonderfull pair and worth keeping. If hooked up to a good amp (preferably a restored beomaster from the same era haha) they will surprise you quite a bit! Also I found putting them on the original stands made quite a diffrence.