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September 8

th

 2014 

www.thonk.co.uk 

14 

Manhattan Analog 
VCA Module 

Eurorack DIY Kit 

Instructions 

Version 1.0 

 
 

 

34. 
 
Next you need to fix the other two jacks to 
the  panel  and  solder  both  ground  pins 
together to the lead. It’s easiest to thread 
the  ground  pins  onto  the  hanging  lead 
BEFORE  pushing  the  jack  barrel  through 
the hole 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  jacks  so  it  is  out  of  the  way  and 
secure. 
 
Cut the 

CV1

 wire down (in my diagram it’s 

red,  yours  may  be  a  different  colour)  so 
that it’s extending about 1cm further than 
the  closet  vertical  pin  on  the 

CV1

  jack. 

Check the panel legend for reference! 
 

 

 

 

 
36. 
 
Strip then solder the 

CV1

 wire (red in my 

photo)  to the nearest pin on the 

CV1

 jack 

 

 

 

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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