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September 8

th

 2014 

www.thonk.co.uk 

Manhattan Analog 
VCA Module 

Eurorack DIY Kit 

Instructions 

Version 1.0 

  

MA VCA OVERVIEW 

 
For the most recent version of 
this document please visit 

http://thonk.co.uk/documents/MA/

 

 

For  all  technical  support  please 
visit 

http://bit.ly/1tl78E0

 

on 

Muffwiggler. 
 
 
 

 

 

  

 
All    Thonk  kits  are  sold  under  our  standard  Terms  and  Conditions  - 

http://www.thonk.co.uk/faq/

 

 
 

DIY INSTRUCTIONS 

 
This document gives detailed instructions that assume you have purchased a 
complete kit from 

www.thonk.co.uk

. It also assumes no previous knowledge 

of  electronics.  To  learn  to  solder  try 

http://youtu.be/I_NU2ruzyc4

  and  the 

Adafruit guide to excellent soldering

 – http://

bit.ly/1l77tF4  

 

Watch and understand that whole YouTube video! If you’re not achieving the 

results shown in the video then you need to buy new tools or seek advice. 

You will not end up with a working module otherwise. 

 

TOOLS REQUIRED 

 

Soldering iron, tweezers for SMD parts, snipe nose pliers, wire strippers, 
small flat head screwdriver and diagonal cutters AKA snips AKA side-
cutters. A Digital Multimeter is always helpful for checking for bad solder 
joints and continuity. Thonk sell a range of inexpensive tools here - 

http://bit.ly/1jxqF3n

 

 
 
 
 

Summary of Contents for MA VCA

Page 1: ...nk co uk It also assumes no previous knowledge of electronics To learn to solder try http youtu be I_NU2ruzyc4 and the Adafruit guide to excellent soldering http bit ly 1l77tF4 Watch and understand th...

Page 2: ...he same on both sides then stop Work out why from the soldering guides linked and don t continue until you are getting those results This isn t about perfectionism you are very likely to end up with a...

Page 3: ...white tissue paper inside Carefully peel back the transparent plastic with the parts angled down so they fall into the receptacle The tissue paper will stop them bouncing and sliding If the receptacle...

Page 4: ...rientation 4 Next solder the two 100R resistors into place as shown NOTE In some of the kits the 100R resistors are provided as two separate bags with 1 piece in each NOTE You should have nice shiny s...

Page 5: ...sion 1 0 6 Next solder the four 1K resistors into place as shown 7 Next solder the single 4 12K resistor into place as shown 8 Next solder the single 10K resistor into place as shown 9 Next solder the...

Page 6: ...and quickly you should achieve the nice shiny solder cones mentioned previously on both sides of the board without needing to apply heat for longer than 3 seconds per joint BLACK RING TEXT 12 Next tak...

Page 7: ...two Ferrite Beads into position as shown 14 Next solder the single blue 22pF capacitor into place as shown 15 Next solder the three 100n caps into place as shown 16 Next solder the 14 pin and 8 pin I...

Page 8: ...e 16 pin DIL socket in the positions shown to create a single line 8 pin socket as shown 18 Next solder your newly created 8 pin single line socket into place The other half of the socket can be kept...

Page 9: ...blue trimmers into position as shown 22 Solder the single 4 7uF SILMIC II electrolytic capacitor into position as shown NOTE DO NOT MISTAKENLY SOLDER ONE OF THE TWO 47uF NICHICON ELECTRO CAPS HERE NOT...

Page 10: ...entation is vital The longer lead on the part should be positioned in the square pad marked with the plus positive symbol 24 Solder the larger remaining electrolytic capacitor into position as shown N...

Page 11: ...DIY Kit Instructions Version 1 0 26 Open the yellow ESD packet and solder the 78L05 into position The rounded side of the component faces out towards the edge of the board 27 Remove the nut and washer...

Page 12: ...ay just want to tag one terminal on each pot with solder first so that the pots are all definitely flush with the PCB Then finish the other 2 joints on each pot Remove the panel again and put the wash...

Page 13: ...the ground pins are touching as shown 32 Take one of the resistor leads you saved earlier use pliers to bend into a crook shape and thread through the two touching jack ground pins Solder so there is...

Page 14: ...e in the panel Now there is a connection between 1 The ground pins on all 4 jacks 2 The bridging resistor lead 3 The wire to the ground pad on the PCB 35 Push the ground wire down between the four jac...

Page 15: ...o it is orange Trim the CV2 wire so it protrudes 1cm from the nearest vertical pin on the CV2 jack and solder 38 Now solder the wire from the OUT pad on the PCB to the vertical pin furthest from the P...

Page 16: ...is a box marked on the PCB at the point closest to the blue trimmer Align the notch on the THAT2180B chip The pins on the THAT2180B are quite long so take care to not bend them when pushing into the s...

Page 17: ...r diode limits the offset incoming CV sum to 5 14V so if you mash it up to the diode s break point you ll get a little bit of positive gain with it trimmed to unity at 5 00V If you like distortion I e...

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