Many thanks to Zortrium for the link to these schematic diagrams (which, by the way, are not offered by Klipsch).  The link is: http://www.thompdale.com/bash_amplifier/2-1/2-1_bash_amp.htm   

And here are the various schematics (courtesy of Dale Thompson; copyright protected):

Block diagram of Klipsch Promedia 2.1 System:

 Interconnect diagram of Klipsch Promedia 2.1:

Schematic diagram of Control Pod:

2.1 DIN Plug Wiring Diagram:

Schematic diagram of I/O Board:

Schematic diagram of HF (Satellite) Amplifier Board:

Schematic diagram of LF (Subwoofer) Amplifier Board:

Schematic diagram of Power Supply:

Don

That's the site. My thanks goes out to them all. Nice work on disecting all these speakers for us.

cityjim