USB speakers not working

[zulkarnain]

Hi there,

I am using the Edifier R19u USB speakers with a mid-2010 iMac. After updating to MacOS Sierra, the system no longer detects the speakers and I'm now unable to play any sound through the external speakers. The sound is playing thru the internal speakers instead.

Any fix for this?? HELP!

 

[Fishrrman]

Have you checked the Audio/MIDI setup utility…?

 

[zulkarnain]

yes i did. not detected too

 

[jerwin]

Do they show up in the USB Device Tree?

(About This Mac, System Report Button...)

 

[Fishrrman]

Another question:
Are the speakers connected directly to the Mac's USB port, or are they running "through a hub" ...?

 

[zulkarnain]

Another question:
Are the speakers connected directly to the Mac's USB port, or are they running "through a hub" ...?

they're directly connected to one of the imac's usb port.
[doublepost=1474503333][/doublepost]

Do they show up in the USB Device Tree?

(About This Mac, System Report Button...)

now it doesn't. they were working fine right up to the moment i decided to update to macOS Sierra

 

[jerwin]

My secondary display stopped working with sierra. (I suspect that this might have had something to do with airserver). Didn't even show up in the System report. Had to reboot. The display came back. Yay. Now I can watch TV and do work at the same time.

 

[zulkarnain]

My secondary display stopped working with sierra. (I suspect that this might have had something to do with airserver). Didn't even show up in the System report. Had to reboot. The display came back. Yay. Now I can watch TV and do work at the same time.

I've rebooted many times. I've even tried resetting the SMC & NVRAM, still nothing.