Hi,

One of my Altec 604E speakers makes this vibration sound ( something`s loose inside the speaker?! / or damaged ? ) at certain frequencies...

I do not know what to do - The sound is definitely coming from the speaker - NOT the cabinet.

The vibration sound ( that is definitely not meant to be there ) is present at long low frequencies - like on this song : The Hook by Knut Reiersrud on Spotify

Crossing fingers that someone can help me out on this one... probably not much info to go on either for you ...



all help will be appreciated.