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Music Thing Modular

SimpleEQ

Construction Guide

(1206 version)

MTM SimpleEQ 1206 build doc v1.3

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Summary of Contents for Music Thing Modular SimpleEQ

Page 1: ...Music Thing Modular SimpleEQ Construction Guide 1206 version MTM SimpleEQ 1206 build doc v1 3 Page 1...

Page 2: ...s common with through hole ICs SMD devices often have one of the longer sides with a sloped edge the other with a vertical edge If you have such a device pin 1 is the left most pin of the side with th...

Page 3: ...g the ICs Flux pen This isn t essential for a kit like this with only two 8 pin IC s but it does make soldering some components easier Fine point tweezers These are essential for handling surface moun...

Page 4: ...such as ICs transistors diodes etc will be in a anti ESD plastic The tape will probably have a layer of clear plastic film over one side To remove the device the easiest way is to carefully peel away...

Page 5: ...MTM SimpleEQ 1206 build doc v1 3 Page 5 Illustration 2 SMD resistors in tape showing plastic cover partially peeled away Illustration 3 SMD IC s in tape packaging...

Page 6: ...loupe Clean your work as you go You ll find it much easier to inspect your work with the solder flux residue removed There s many useful resources online for tutorials on working with surface mount d...

Page 7: ...The Kit The PCB MTM SimpleEQ 1206 build doc v1 3 Page 7 Illustration 5 PCB top view Illustration 6 PCB bottom view Illustration 4 SimpleEQ 1206 kit with white panel...

Page 8: ...ing upwards it s good practice to have the side with the value pointing upwards As resistors are not polarised it doesn t matter which end of the resistor is soldered to which pad on the PCB Before we...

Page 9: ...ne of the PCB pads for R1 immediately apply a small amount of solder to the pad Remove the iron tip You should have a small rounded blob of solder on the pad If you think you ve applied too much solde...

Page 10: ...just one pad soldered so now is the time to get it s positioning right You might think that there isn t a lot of solder on the pad This is fine extra will be added once the other pad is soldered The...

Page 11: ...ve any solder flux residue from around the resistor using the soft brush cleaner appropriate for your solder as you would do for through hole boards Apply a small amount of the cleaner to the resistor...

Page 12: ...pad Then repeat this for R3 R4 After which the board should look something like this Now install the rest of the resistors 2 x 220R resistors R13 R14 2 x 1K8 resistors R5 R10 2 x 2K2 resistors R8 R11...

Page 13: ...Use the same cleaning technique that you used for R1 Now use a magnifier glass or jewellers loupe to inspect your solder joints Check that the contact points on the resistors the pads on the PCB are c...

Page 14: ...e is pointing upwards as you ll see they don t have a value printed on any face Start with the 5 x 100nF capacitors designated C1 C7 C8 C11 C12 Use exactly the same procedure to solder these capacitor...

Page 15: ...e ceramic capacitors 2 x 22pF capacitors C4 C6 2 x 33nF capacitors C3 C5 1 x 4 7nF capacitor C2 The board should now look like this MTM SimpleEQ 1206 build doc v1 3 Page 15 Illustration 17 100n cerami...

Page 16: ...in either orientation Use the same technique for these as for the resistors and the ceramic capacitors but try to avoid overheating them as they can be damaged by excess heat Note that the colour and...

Page 17: ...u ve installed up to now these are polarised devices meaning they must be installed on the PCB with the correct orientation If you look at one closely you ll notice a line marked on the top of the pac...

Page 18: ...installed on the PCB solder them using the same technique as the resistors and capacitors Now take some time to clean the board as before inspect your soldering on the diodes capacitors fuses MTM Simp...

Page 19: ...a dimple or crescent embossed into the casing to identify the location of pin 1 Instead they have a sloped upper edge on the side with pin 1 The other side has a vertical face If you look at the silk...

Page 20: ...ads will help soldering the ICs If you re going to use one apply some flux to the pads of both IC1 IC2 In a similar way to how you soldered the previous components place a small blob of solder to one...

Page 21: ...he IC isn t quite sat squarely on the pads re apply the soldering iron to the soldered pad gently nudge the IC into place with the tweezers Again try to minimise the time that the IC is being heated u...

Page 22: ...e already soldered Put the tip of the soldering iron at the end of the pad apply a small amount of solder The solder should flow down the pad over the IC leg Repeat this for the other pins on that sid...

Page 23: ...are soldered thoroughly clean the PCB around both ICs especially if you ve used a flux pen Take your magnifying glass loupe inspect the soldering on the IC pins Check no pins are shorted Using solder...

Page 24: ...stalled with the correct orientation On the PCB the silk screen is marked with a for the positive leg On the device the positive leg is the longer one and the negative leg will be marked with a on the...

Page 25: ...ould keep everything in place whilst you do this The panel should now be parallel to the PCB Turn the assembly over so the component side of the PCB is facing upwards Solder one of the Tilt jack pins...

Page 26: ...And thats the soldering done All you need to do now is tighten up the nuts on the jacks and on the pots then fit the knobs MTM SimpleEQ 1206 build doc v1 3 Page 26...

Page 27: ...H472JA01D 5 C0G NP0 2 33nf C3 C5 C1206 capacitor 81 GRM315C1H333JA01D 5 C0G NP0 5 100n C1206 capacitor 81 GRM319R72A104KA1J 100V 10 X7R 2 47u C9 C10 647 UKW1V470MDD 35V 5mm dia 2mm pitch 2 NE5532 IC1...

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