I left them without power overnight. They are now very quiet indeed. I can still hear sound up close but clearly not the same as when plugged in.
I will try the vacuum and/or shower!
Thanks for all the advice ...
Many Thanks for the quick response Tom ...
I will certainly try your suggestions.
I'm still a little confused why it makes no difference if power is connected to the speaker or not?
New Sequel II owner - bought locally off craigslist ...
Sounded great during the audition ...
I now notice that one speaker has lower higher frequency output than the other.
I've proved to myself that it's not the amp or source.
I removed the power supply and the high voltage supply is turned...