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Step 5: Step 2: Creating the audio circuit.

Picture of Step 2: Creating the audio circuit.
Step 2 in assembly is inserting and soldering the audio circuit.

Next:
  1. Insert the two 1k1 resistors (Brown, brown, red)
  2. Insert the two caps at C4 and C5.
  3. Insert the two electrolytic caps at C2 & C3.

Important!  The two electrolytic caps must be inserted with proper orientation.  The negative side of each cap should be facing away from the plus sign on the board silk screen.  Follow the image below and you'll be fine.
 
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rwolkens2 years ago
Did you mean to say: Insert the two caps at C4 and C5 on step 2 above, instead of C4 and C4?
Gadget Gangster (author)  rwolkens2 years ago
Fixed! Thank you for spotting that!