NI Gainclone PCB pictures 
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transpixel Picture of bare pcb transpixel
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transpixel Soldering the Riken 0.5W resistor first, as it has the lowest profile, R3 = 620/680, depending on R2 transpixel
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transpixel Picture of soldering process transpixel
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transpixel After soldering process transpixel
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Picture of bare pcb
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Soldering the Riken 0.5W resistor first, as it has the lowest profile, R3 = 620/680, depending on R2
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Picture of soldering process
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After soldering process
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transpixel Soldering the Caddock resistors next, R1 = 220ohm, R2 = 20k/22k depending on R3 transpixel
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transpixel Soldering complete transpixel
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transpixel View of top of boards with the resistors in place transpixel
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transpixel View of the back of the pcb with resistors soldered transpixel
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Soldering the Caddock resistors next, R1 = 220ohm, R2 = 20k/22k depending on R3
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Soldering complete
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View of top of boards with the resistors in place *
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View of the back of the pcb with resistors soldered
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transpixel Time to solder the large caps transpixel
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transpixel Caps are installed.  Note the polarity.  If you get this wrong, they might explode. transpixel
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transpixel Time to install the negative feedback (NFB) resistor transpixel
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transpixel leads are clipped, and resistor is clamped in place transpixel
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Time to solder the large caps
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Caps are installed. Note the polarity. If you get this wrong, they might explode. *
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Time to install the negative feedback (NFB) resistor
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leads are clipped, and resistor is clamped in place
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transpixel Finished soldering NFB resistor transpixel
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transpixel LM3875 in place to be soldered transpixel
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transpixel LM3875 is now soldered transpixel
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transpixel Front view of amplifier, now ready for chassis installation transpixel
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Finished soldering NFB resistor
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LM3875 in place to be soldered
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LM3875 is now soldered
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Front view of amplifier, now ready for chassis installation
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transpixel Bending Rnfb to place on the LM3875 for second channel transpixel
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transpixel clamped place.  This one came out a bit better than the first.  An alligator clip will work fine for a clamp transpixel
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transpixel Resistor with leads clipped to proper length and bent correctly transpixel
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transpixel Diodes now soldered into power supply board transpixel
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Bending Rnfb to place on the LM3875 for second channel
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clamped place. This one came out a bit better than the first. An alligator clip will work fine for a clamp
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Resistor with leads clipped to proper length and bent correctly
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Diodes now soldered into power supply board *
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