Thank you so much for your valuable advice in the successful restoration of my college (c.1974) KLH17 speakers. Special thanks to go @JKent, who was extremely responsive and patient.  This began as a simple project to combine a castoff receiver from the household with my speakers, which had been in storage for 25 years, to use in my model railroad room. A little research, however, revealed the importance of replacing the capacitors on speakers that old. I didn't know my speakers had ca