Farrer

Marvel, thanks for taking the time to reply. Both cabinets vibrate the terminal cups when a 186 hz tone is played. Some songs hit this frequency. I have tightened them by hand and was surprised they didn't strip. if I press on the cups I can stop the vibrating. When they vibrate it is very noticeable (loud). I took the cups out and played some music and no buzz. So then I'm thinking bass port. Back to the buzzing, I was thinking to JBweld a metal strap on the inside of the cup. I'm surprised that others aren't having the same problem. I searched with Google and found nothing related. Thanks again Keith

Have a pair of Heresy II with the round terminal cup. They buzz at 186.8hz between 5 and 10 watts. I removed the cups and no buzz. I checked that no crossover components were against the cups. Is there any way to stop the buzzing? Is this why they went to the rectangular terminal cups? Can I still buy the rectangular terminal cup and crossover board and if so what part numbers should I order. Thanks for your help.