addad speaker improvement ideas

diff --git a/misc/portable stereo active speaker/index.org b/misc/portable stereo active speaker/index.org
index e85fa1f..0cef8d3 100644 (file)
--- a/misc/portable stereo active speaker/index.org
+++ b/misc/portable stereo active speaker/index.org
@@ -214,7 +214,6 @@ And attaches to the remaining components:
 
 [[file:front%20panel/attachment.png]]
 
-
 * Extra capacitors
 Another thing that become clear during load-testing: output
 power/volume can be further enhanced by adding high power capacitors
@@ -245,10 +244,12 @@ Download:
 + [[file:center%20box/center%20box.FCStd][FreeCAD file]]
 + [[file:center%20box/center%20box.stl][STL file]]
 
-
 * Conclusions / TODO
+Photo of initial PSU + audio amp test:
+[[file:initial%20test.png]]
+
 
-These things could be done better:
+Improvement ideas:
 
 + Instead of using undersized heatsinks on the audio amplifiers and
   need for active cooling as a consequence, it would be better to try
@@ -256,21 +257,15 @@ These things could be done better:
   would provide plenty of cooling and reduces power losses within
   cable, since amplifier would be as close to the speaker as possible.
 
-+ I used agile design. That is, implemented functionality ad-hoc. If I
-  had done design in advance, then I could have had smarter connector
-  layout between main board and front panel. That is: Instead of
-  multiple smaller cables, one wide (multi connector) cable.
++ Add possibility to power device from USB socket in addition to
+  batteries.
 
-+ Screw holes are too close to the edges on the front panel.
++ Front panel:
+  + Use digital voltage indicator to gauge remaining battery power.
 
-+ It would be better if screw heads were slightly buried within
-  construction body.
+  + Add possibility to have multiple inputs.
 
+  + It would be better if screw heads were slightly buried within
+    construction body.
 
-Overall, it was good learning experience and I was able to test
-various ideas on it. Will add cooler later :)
-
-
-Photo of initial PSU + audio amp test:
-
-[[file:initial%20test.png]]
+  + Screw holes are too close to the edges on the front panel.