ANTUMBRA ATN8 Instruction Manual
ANTUMBRA
ATN8
BUILDING INSTRUCTIONS
PCB V1.0
01. BUILD NOTES
Before you start building look through the build manual
so that you’ll be familiar with the building process and
you won’t run into any surprises! :)
02. BUILD
00. Orient the PCB as seen on the left
01. Solder the ten TL074 opamps
You can also use LME49743 for better audio quality
02. Solder the LM4040 10V IC
TL074
TL074
TL074
TL074
TL074
TL074
TL074
TL074
TL074TL074
TL074
TL074
TL074
TL074
TL074
TL074
TL074
TL074
TL074TL074
00 01 02
02. BUILD
03. Solder the two 1n5819 diodes
NOTE: Watch out for their orientation
04. Solder the four 180r resistors
These are for the jack LEDs so they are optional
05. Solder the sixteen 1k resistors
TL074
TL074
TL074
TL074
TL074
TL074
TL074
TL074
TL074TL074
TL074
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03 04 05
02. BUILD
06. Solder the single 10k resistor
07. Solder the single 55 × 100k resistors
They should be 0.1% (or less) for best berformance.
08. Solder the eight 22pF capacitors
TL074
TL074
TL074
TL074
TL074
TL074
TL074
TL074
TL074TL074
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06 07 08
02. BUILD
09. Solder the 20 × 100nF capacitors
10. Solder the two 10uF capacitors
NOTE: watch out for their orientation!
Match their shape with the PCB drawing.
11. Solder the 16 × SMD LEDs
NOTE: the little T markings on it should face the line on
the PCB silkscreen.
These are optional for the jack lights.
They draw a considerable amount of current on the
+12V rail. (About 90mA)
TL074
TL074
TL074
TL074
TL074
TL074
TL074
TL074
TL074TL074
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02. BUILD
12. Solder the 2x5 pin power header and the 1x2 header
for the jack lights.
The 1x2 header is optional
TL074
TL074
TL074
TL074
TL074
TL074
TL074
TL074
TL074TL074
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02. BUILD
13. Flip the board and orient it as on the picture.
DO NOT SOLDER YET!
14. Place the 10 mini switches
15. Place the ten 10kB potentiometers.
They should be the T18 shaft type so that the knobs
can be oriented properly.
13 14 15
02. BUILD
16. Place the 8 bicolor LEDs
Long leg goes into the hole marked with +.
17. Place the 16 jacks.
Now place the front panel on top, put the nuts on the
jacks and pots, align everything nicely. If you like how it
looks, solder everything on the other side!
You are done with building! Congratulations!
16 17
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