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Zombie REC mComp, Assembly Manual, Page: 42 / 44

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Zombie REC mComp Assembly Manual Download Page 42

All content Copyright ©2022 Zombie REC. Specifications are subject to change without notice. 

Step 13 – Hardware and ICs

 

Now all that is left is inserting the standoffs and the ICs. The standoffs have a locking side and a non-
locking side. The locking side has tabs with a right angle, insert the locking side into the PCB: 

 

When mounting the ICs, make sure to align their groove/marking with the marking on the socket 
(and PCB). Also insert the jumper on the left into the desired ratio position (2:1 or 4:1). Alternatively 
you can bypass the GR circuit with leaving the jumper out, but more on that in a bit: 

 

 

 

Summary of Contents for mComp

Page 1: ...All content Copyright 2022 Zombie REC Specifications are subject to change without notice COMP Diode Compressor r1 1 Assembly Guide www zombierecaudio com info zombierec com Last Updated March 13 2022...

Page 2: ...property Also keep all contents away from children Follow the guide build carefully and pay attention when using the necessary tools If something is missing or damaged contact us on info zombierec co...

Page 3: ...temperature recommended A clean solder tip with a large enough tip 2mm ca 0 78in width Solder preferably less than 1mm 0 4in in diameter Good wire cutters to clip the excess leads A pair of tweezers...

Page 4: ...00pF 1x 1uF 6x 100nF 3x 47pF 3 2x Transformer 4 7x Hardware 1x 8pin header 1x 4pin header 4x Standoff 1x Jumper 5 1x SMD SOT 23 6 4x Transistors 2x 2N3906 PNP 2x BC550 NPN 7 6x IC Components 2x TL074...

Page 5: ...T 23 surface mount device It s D9 on the PCB Fetch the part and also prepare the tape scissors and tweezers Use the tweezers to get the part out of the packaging Cut some tape as shown below it should...

Page 6: ...ie REC Specifications are subject to change without notice sticky side up with your finger and stick the SMD part with the tweezers bottom up on the tape so that it s single foot hangs outside the bot...

Page 7: ...he tape with the SMD part on it and apply it like you would with a band aid Use both index finger and thumb on both hands to gently align the legs of the part and simply push down on the tape once you...

Page 8: ...ie REC Specifications are subject to change without notice Now solder the pin by gently pushing the tip of the solder iron on the PCB and the pin and apply some solder Remove the tape and solder the r...

Page 9: ...REC Specifications are subject to change without notice Step 2 Small Ceramic Capacitors There are 3x 47pF caps to solder C5 C12 C13 red and 6x 100nF C1 C2 C7 C8 C10 C11 blue We ll take a closer look...

Page 10: ...tent Copyright 2022 Zombie REC Specifications are subject to change without notice When you insert them make sure to firmly push down between their legs to bend them as close and tight to the PCB as p...

Page 11: ...without notice Then clip off the first lead while holding the wire cutters parallel to the surface in a way that the remaining lead overhangs the hole onto the PCB and locks the part in place that way...

Page 12: ...rt the 50k where it says Thr that is the Threshold control Insert the 100k where it says Att that is the Attack control And finally insert the 220k where it says Rel that is the Release control The po...

Page 13: ...022 Zombie REC Specifications are subject to change without notice Step 4 4 pin Header We ll solder the 4 pin header next as it is most convenient to do it now For this use the tape again to hold it i...

Page 14: ...t Copyright 2022 Zombie REC Specifications are subject to change without notice Flip it over and solder away If the tape is in the way solder the easy accessible pins first then remove the tape and do...

Page 15: ...opyright 2022 Zombie REC Specifications are subject to change without notice Step 5 IC Sockets We also do the sockets right away because it s most convenient to do it now Start with the 14 pin socket...

Page 16: ...to insert the socket so that the notch and the marking on the PCB are aligned Use tape again to fix the socket in place While doing so make also sure that the socket is flush on the PCB Then flip it o...

Page 17: ...All content Copyright 2022 Zombie REC Specifications are subject to change without notice Then continue with the upper 14 pin socket And finish with the 8 pin socket...

Page 18: ...l diodes Insert them into D1 D2 and D7 Insert the long lead side without the black band anode where the white ring is on the PCB The black band side should go into a hole marked with K Each diode shou...

Page 19: ...All content Copyright 2022 Zombie REC Specifications are subject to change without notice...

Page 20: ...yright 2022 Zombie REC Specifications are subject to change without notice Continue with the remaining 5 diodes Insert the first diode into D8 and follow up with D3 D5 and D4 D6 Solder them again as s...

Page 21: ...P transistors each Make double sure to pick the correct ones by checking their marking and insert them in the correct spot and its orientation And as a reminder don t forget to be properly grounded wh...

Page 22: ...All content Copyright 2022 Zombie REC Specifications are subject to change without notice Insert the transistor into Q1 check orientation hold it with your index finger and flip the board around...

Page 23: ...pecifications are subject to change without notice Now bend each lead on the outside in reversed directions from eachother away from the center Then let your index finger go Cut off the lead in the sa...

Page 24: ...change without notice Solder it and continue with the other side Finally cut off the center lead and solder it as well Make sure that no solder bridge between the pins is created Continue with Q3 and...

Page 25: ...ions are subject to change without notice Well use the remaining two NPN here They are marked with BC550 Solder them the same way as previously shown Double check the orientations again The flat surfa...

Page 26: ...l content Copyright 2022 Zombie REC Specifications are subject to change without notice Step 8 Resistors Finally we get to the resistors We ll start from right to left as follows skip R5 and R7 for no...

Page 27: ...Zombie REC Specifications are subject to change without notice Like we did with the diodes before bend the lead at one side of the resistor and solder them using the exact same technique as before R8...

Page 28: ...All content Copyright 2022 Zombie REC Specifications are subject to change without notice R4 4 99k R28 470R R29 1k...

Page 29: ...All content Copyright 2022 Zombie REC Specifications are subject to change without notice Next up R9 R10 bottom 47k R11 510R...

Page 30: ...All content Copyright 2022 Zombie REC Specifications are subject to change without notice R22 top 470R R23 100R Now the center section...

Page 31: ...All content Copyright 2022 Zombie REC Specifications are subject to change without notice R16 R17 R18 10k R19 2k R14 47k R15 470R...

Page 32: ...All content Copyright 2022 Zombie REC Specifications are subject to change without notice R27 13 3k R25 6 65k And finally...

Page 33: ...All content Copyright 2022 Zombie REC Specifications are subject to change without notice R12 R20 R24 10k R13 61 9k R21 47k R26 13 3k...

Page 34: ...pecifications are subject to change without notice Step 9 Film Capacitors Solder these the same way we did with all other leaded components up to this point Populate C6 top with the larger 1uF cap and...

Page 35: ...change without notice Step 10 Transformers While the two transformers are not exactly through hole components they still can be soldered to keep them in a rock solid position When done correctly there...

Page 36: ...bject to change without notice Use tape again to fix the transformer in place Be careful when inserting the wires Use tweezers to help move the wires into the holes Make sure the transformer is flush...

Page 37: ...content Copyright 2022 Zombie REC Specifications are subject to change without notice Prior to soldering trim excess wires to the same length of the other components Now repeat with the other transfor...

Page 38: ...All content Copyright 2022 Zombie REC Specifications are subject to change without notice Again trim the wires to a suitable length before soldering shown below are the wires before trimming...

Page 39: ...ubject to change without notice Step 11 Electrolytic Capacitors Time to solder the special audio grade elcos Repeat the same lead soldering technique as before These capacitors are polarized align the...

Page 40: ...C Specifications are subject to change without notice Step 12 Pin header and remaining resistors Time to wrap up the build Lets finish it off by soldering the pin header first Make sure that the long...

Page 41: ...subject to change without notice Again use tape to hold the header firmly in place After soldering one pin you should be able to remove the tape and solder the rest Now solder the last two remaining r...

Page 42: ...locking side and a non locking side The locking side has tabs with a right angle insert the locking side into the PCB When mounting the ICs make sure to align their groove marking with the marking on...

Page 43: ...h or toothbrush Usage The usage is pretty straight forward There are three trimpots and a jumper setting Threshold Turning CCW for higher levels or less GR and CW for lower levels or more GR Release T...

Page 44: ...All content Copyright 2022 Zombie REC Specifications are subject to change without notice Thanks and have fun If you have any questions don t hesitate to contact us on info zombierec com...

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