iMac does not recognize the external speakers

After working flawlessly for two years, my iMac (running Mavericks) now does not recognize my speakers B & W MM1.  I restarted my iMac, unplugged and reconnected my speakers as well from the electrical outlet and the USB connection, but nothing has worked so far.  All other connections are solid.  Any suggestions?  Thank you.

Hmmm. These speakers are USB, so they should be relatively problem-free.

Try to disconnect all your USB devices, restart, and then reconnect the USB devices again. It remaps the USB.

In addition, make sure the configuration under the system preferences/Sound/output is correct.

Tags: Mac

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