I'm wondering how/if it's possible to route the speaker-level output of my A/V receiver through my Arduino Due, then transmit that data via a wireless signal - xbee, nordic, whatever - to another Due, then into the input of another amplifier.. sort of a poor-man's wireless audio network. I'm not expecting super high quality output, but something listenable to would be nice. I suspect Xbee won't be fast enoug.. but I do have a pair of DORJI Transceivers sitting here looking for a project.. (http://www.dorji.com/pro/RF-module/Medium_power_tranceiver.html
- I've got the DRF4432D20I ones) I also have a pair of the raw RF modules too..
My A/V receiver outputs 90W per channel @ 8Ohm (125W @ 6 Ohms).
If I understand Ohms Law well enough for this application (Volts = Square Root of Power * Resistance).. so @ 90W, I'm playing with about 27 volts or so.. and I'd need to get that down into the range the Due can sample.
But I'm stuck on how I'd actually DO that. I'd thought about a simple voltage divider network, but I'm not quite sure how I'd match impedance so that I won't burn up my amp, or my due!
Anyone have any suggestions?