CubuSynth Engine Build Manual - Page 8

Browse online or download pdf Build Manual for Music Equipment CubuSynth Engine. CubuSynth Engine 20 pages. Dual complex vco with wave shaping and modulation features

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CubuSynth Engine - Build Guide
STEP 5 (Main PCB)
Transistors
Keep the 2N5457 for later, since it stands off further from the PCB. It is recommeded to start
with the 2N3904, then the 2N3906 due to the tight placement. Put them in place and make sure
the orientation is correct. The outline of the transistor has to match with the silkscreen on the
PCB. You can bend the 2 outer legs of each transistor, so they dont fall out when turning around
the board like shown below.
Lay the PCB down on a flat surface to make sure, the transistors are flush to the PCB.
The footprint for those is quite small, so stay focused and don't use too much solder to avoid
shorts.
Check your solder joints with a magnifier and/or multimeter when in doubt.
8
2N3904
8
2N3906
Page 8
Q16,Q15,Q14,Q7,Q6,Q5,Q4,Q2
Q3,Q8,Q9,Q10,Q11,Q12,Q13,Q17
PCB V1.1 May 2022