Crossed Speaker Wires

26  80%  21%  0mph SSE  bar29.64  steep fall  Windchill26  Winter

          Waning Gibbous Winter Moon

Performed the test of the sound system today with the microphone that listens to output from the speakers and adjusts them according to prestablished program.  It sounds out whistles, clicks, rolling thunder, static and a loud rush of static.  Then it tells you if things are optimal.  First problem:  I’d crossed one set of speaker wires, the smooth to the positive instead of the ridged.  Checked all twenty connections, on speakers and on the receiver, found one set wrong and fixed it.  Second problem:  difference in volume excessive.  No idea what that meant, but one of the solutions was to move speakers around.  I did that and the next time through, pass number 3, No Errors.  This ends the first phase of the new video and sound system.  All of it is in place.  All of it works as intended.  

Next phase will be optimization of various aspects of the receiver, the DVD player and the TV.  This will take place over time and really never ends.  Fun.  A hobby in itself.

Watched an interesting Discovery channel program tonight on the Great Wall.  It presented the Great Wall as largely a product of one general in the early Ming Dynasty.  While the existing wall traces much of its current form to that era, wall building as a defensive strategy began much earlier, in the Spring and Autumn Period of the Eastern Chou dynasty.   Various pieces of walls got built at many stages in Chinese history.  The reason the Ming Dynasty effort was so vast lies in their resting power away from the Yuan Dynasty.  During the Yuan Dynasty China became a part of the Mongol Empire, ruled by Kublai Khan first.

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