[ARC5] Tip of the day:

[J Mcvey via ARC5]

I may be preaching to the choir, since I doubt there are many "newbies" here...but:
I found that a small "70 volt" line transformer used for long runs on Public address amplifiers does a pretty close match with the high impedance output of the ARC5/SCR274 receivers. The 625 mw tap works fine.
more info here:http://www.crownaudio.com/media/pdf/amps/138905-1_10-05_constant_voltage.pdf