External Speaker Setup/Connection Help

Jun 25, 2019
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I recently purchased an Electric Wall mount Fireplace that came with 2 builtin speakers. Upon analysis, they look like regular 15 W mono speakers in a custom box however there are some characteristics that I don't understand and I am looking for assistance in determining how these work.

My observations are consolidated in this PDFhttps://drive.google.com/file/d/1m0NZAYSiEhLbSngaQbDKZvCY2w2jjKVz/view?usp=sharing with pictures...the text version is below:

  • 2 speaker boxes, insulated with 1 RCA jack on each
  • the left speaker has additional components on the side (power line in adapter, USB, Line in Jack)
In addition, the left speaker also has what look like an IR receiver ...not sure what for.

I am trying to determine:
  • how to connect these to my receiver ? 1 Aux Line out (receiver) to Line in (left speaker) connected to Right speaker via single RCA jack?
  • what is the function of the USB port?
Pictures of the circuit board located in the Left speaker are located in the linked PDF file.
Link to PDF
URL: https://drive.google.com/file/d/1m0NZAYSiEhLbSngaQbDKZvCY2w2jjKVz/view?usp=sharing


Any help would be appreciated!


Thanks,

James
 
Jun 25, 2019
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I gave up and bypassed the circuit board and just used the speakers connected to another external amp.
 

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