My speakers stopped working. Cannot increase the volume, have to put ear very close to hear a faint sounds

I fixed a similar problem I was having. It requires a little work.

Take out the four screws from under the broken speaker. Carefully remove the cover, separating the speaker from the base. The two are wired together so don't pull them apart with force. Then remove the single screw, which is much larger the the previous four, and separate the speaker from the top cover.

If you chose you can remove the wires from the speaker, they just snap on, but its not required.

What I found is the speaker issue is not with the wire or the power, but the speaker it's self. On the back there is a big round metal piece. On my speaker that piece was pushed towards the front of the speaker. When I looked at the good speaker, that big piece was all the way back. So I simply pulled it back and presto, instant fix!

I hope this works for you.

I just want to confirm that the solution above from francis 8 works perfectly. We have two sets of Creatures in our offices, one had been shelved (by someone less persevering than me) due to this problem years ago and my set started this trouble a few days ago. Troubleshot everything, every cable, setting, combination, spare speakers etc - nothing worked. Opening the offending speaker and pulling back the metal weight behind the speaker cone was the solution for BOTH of our units.
Big smiles all around :-)
Note - When you've opened the plastic shell and loosened the speaker from its mounting, the the big round metal piece/magnet sits within the actual speaker 'cage', slightly behind the speaker cone. It's tight but movable and can be pulled all the way back as far as it can go inside it's housing, away from the speaker cone.
Not sure why it gets pulled forward, but it isn't fixed in position and so could clearly get bumped by dropping the speaker or a reasonable impact of some sort. Once bumped forward it would severely limit cone movement and therefore volume.

I found this forum and followed the above advice. I can't believe it. It worked! I pushed the metal piece back and my speaker was restored. Now I do think the system starts to show its age but I still contend that the Creatures are the most ambient speakers I have heard for the desktop. Plus they look like Darth Vader.
Thank you thank you for the marvelous solution. It saved me much $$ I could not spend.