Is my sub blown?

[Kami]

I have a Paradigm Cube 10. It's been great up until tonight. With no warning, it started to make clicking sounds. It still sounds good quiet, but as soon as you turn it up at all, it starts to make these popping sounds. What could it be? How can it be fixed?

Thanks in advance.

 

[Johnd]

That's what it sounds like. It also sounds as if you enjoy cranking the volume. You may want to try a servo to protect your investment in future "crankings."