Are you still having issues with this?
actually, yes. Sadly, I never was able to fix the issue and I went on to other projects as the year went on :/
But I'm back on it with the extra free time I have this week.
I have 2 sets of 4 outdoor speakers (Episode. I ended up using a line converter from the receiver to my switch, to my amp. But the audio was extremely quiet.
-(4 Speakers at 30W/100V to Channel 1 of Atlas CP400 Amp on Unbalanced Input)
-(4 Speakers at 30W/100V to Channel 2 of Atlas CP400 Amp on Unbalanced Input)
--Channel 1 of Amp to RCA Line Converter
--Channel 2 of Amp to RCA Line Converter
---RCA Line Converter to amp protection switch
----Amp Protection Switch to Front L/R of Receiver Output
----Receiver to Bluetooth Audio
I also tried hooking my headphone out from my phone directly to my amp input, but the outdoor speakers could barely be heard, even at full phone volume and full amp volume)
Also: I found that these are my speakers:
http://www.snapav.com/p-1457-ecs-aw70v-6-blk.aspx