ADDAC System ADDAC703 User manual

November.2019
ADDAC703Assembly Guide
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STEP 1:
Grab the pcb and the capacitors, proceed to solder them, notice the orientation below.
Tip:soldering these caps is easy, just place a dab of solder on the pad on your right (left pad if youʼre
left handed) and then, with the help of a tweezer, put the capacitor in place and reow the previously
tinned pad to reow the solder while pushing the capacitor down. Then solder the other pad.
ADDAC703Assembly Guide

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STEP 2:
Next place the transistors and power regulator like shown below.
ADDAC703Assembly Guide
L79L05
2N3702
2N3702
2N3392
2N3392

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STEP 3:
Next place the boxed power header.
Notice the orientation marked on the pcb.
ADDAC703Assembly Guide

ADDAC703Assembly Guide
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STEP 4:
Next weʼll need to prepare some parts before adding them to the front panel.
Locate the jacks and cut the smallest legs like shown below.

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STEP 5:
Place all parts on the pcb, notice the values, orientation and jack types like shown below.
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ADDAC703Assembly Guide
Threaded Jacks
Threaded Jacks
Non-threaded
Jacks
Non-threaded
Jacks
50k =503 50k =503
50k =503
50k =503
50k =503
100k =104
1k =102
NOTE: 50k trimmers are now
replaced by 100k trimmers!

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STEP 6:
Place the frontpanel and tighten all nuts.
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ADDAC703Assembly Guide

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STEP 7:
Adjust the height of the pcb keeping it parallel to the front panel.
ADDAC703Assembly Guide
Keep lines parallel

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STEP 8:
Solder all parts.
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Finish it by placing the knobs and youʼve nished the
assembly process!
ADDAC703Assembly Guide

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ADDAC703ASSEMBLY GUIDE
Revision.01November.2019