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November 13th 2017 

www.thonk.co.uk 

4 

Spring Reverb Mk ii 

(November 2017 onwards)

 

Eurorack DIY Kit 

Instructions 

Version 1.00 

 

 

5. 
 
Finally in that resistor bag you will 
have a single 

15k

 resistor left, 

solder it into position 

R26

 shown on 

the 

FRONT PCB 

 

 

 

 

 
6. 
 
Next identify the resistor bag 
containing the six 

47K

 resistors and 

solder into the positions shown on 

BOTH PCBs

 

 

R1, R2, R7, R16, R20, R110

 

 

NOTE!

 The resistance value for 

R110

 is not labeled as the value 

depends on the type of Vactrol 
used, for Thonk kits or when using a 

VTL5C3

 vactrol this should be a 

47K

 resistor. 

 

 
 

 

 

 
7. 
 
In the same bag you’ll also find 
three 

22K

 resistors, solder them 

into the positions 

R25, R101

 and 

R109

 

shown on the 

BOTH PCBs

 

 

 

 

 

 

 

 
 
 
 
 
 
 

 

Содержание Music Thing Modular Spring Reverb Mkii

Страница 1: ...k co uk faq DIY INSTRUCTIONS This document gives detailed instructions that assume you have purchased a complete Music Thing Modular Spring Reverb MkII kit from www thonk co uk after November 2017 it...

Страница 2: ...alike creative commons license http creativecommons org licenses by sa 3 0 IDENTIFYING RESISTORS We are now shipping resistors in shared bags to save on the amount of plastic contained in our kits to...

Страница 3: ...N for a closer look 2 There are two PCBs included in the kit FRONT and BACK as shown We will be soldering components to both boards during the build so care must be taken to not absent mindedly solder...

Страница 4: ...CB 6 Next identify the resistor bag containing the six 47K resistors and solder into the positions shown on BOTH PCBs R1 R2 R7 R16 R20 R110 NOTE The resistance value for R110 is not labeled as the val...

Страница 5: ...R108 shown on the BACK PCB 9 Next identify the resistor bag containing the five 2 2K resistors and solder into the positions shown on BOTH PCBs R10 R18 R24 R102 R103 10 In the same bag you ll also fin...

Страница 6: ...sistor and solder into position R107 on the BACK PCB This bag also contains a diode and a capacitor 13 Solder the two 1N4001 diodes from the same bag into the positions as shown NOTE Orientation of th...

Страница 7: ...bag with the single 3300pF capacitor and solder into position C108 on the BACK PCB 16 Next find the bag with the single 2 2nF capacitor and solder into position C110 on the BACK PCB 17 Next find the...

Страница 8: ...p bag and find the two Red 33nF Polybox caps and solder into positions C3 C4 20 Return to the cap bag and find the single 22uF electrolytic cap Make sure to identify the different caps by the value wr...

Страница 9: ...sitions C101 C102 C103 on the BACK PCB NOTE The orientation is vital the shorter lead on the component should go to the circular pad marked with a minus on the PCB Note the component has a grey stripe...

Страница 10: ...25 Next find the small bag containing the FUSES and solder into the two positions shown inbetween the two Diodes 26 Open the silver IC bag with yellow ESD sticker read the warning and find the 78L05...

Страница 11: ...he orientation is vital make sure the LED text on the component matches the LED text on the PCB 28 Next you will solder the female headers to the rear of BOTH PCBs Take care to not solder them on the...

Страница 12: ...ning to use the expander module with the RCA s mounted on the front panel we still recommend soldering them Even when unused these rear phonos only add 3mm more depth to the module compared to the pow...

Страница 13: ...ngle NE5532P and position as shown on the BACK PCB NOTE Orientation is vital Make sure the notches in the ICs match the notches on the PCB silkscreen NOTE You will need to bend the pins on the IC inwa...

Страница 14: ...o hold the boards together 38 If you are not installing the expander you need to position the red shunt on the 3 pin expander header This chooses either the external real spring tank OR the digital br...

Страница 15: ...der between the two pads This grounds the brick op amp so it s not floating and potentially oscillating We have never experienced any problems when NOT doing this so we don t strictly recommend it as...

Страница 16: ...lectronics When first testing your module we suggest you put the spring tank as far away as possible from your eurorack case or other electrical or electronic devices Once your tank is connected power...

Страница 17: ...November 13th 2017 www thonk co uk 17 Spring Reverb Mk ii November 2017 onwards Eurorack DIY Kit Instructions Version 1 00...

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