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Olivella Modular IMAGENES Assembly Manual

Stereo state variable filter
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IMÁGENES
Stereo state variable filter
DIY Assembly Manual - rev 1.2

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Summary of Contents for Olivella Modular IMAGENES

  • Page 1 IMÁGENES Stereo state variable filter DIY Assembly Manual - rev 1.2...
  • Page 2 Thank you for purchasing one of our kits! ’ Introduction, stuff you ll need and some tips IMÁGENES is a dense but very straight-forward build. Requiring to solder only through- hole components as it comes with all SMD components pre-soldered, with its simple calibration procedure (V/Oct response only) qualifies as a medium difficulty build.

  • Page 3: Main Board

    Main Board Open “Main Board – Bag A” HORIZONTAL RESISTORS Qty. Value Color coding Designator on PCB Red – Red – Black – Gold – Brown R9, R14, R22, R31 Red – Red – Black – Black – Brown Orange – White – Black – Black – Brown R55, R56 Green –...

  • Page 4: Ferrite Beads

    FERRITE BEADS Qty. Name Color Designator on PCB Ferrite bead Black L1, L2 IC SOCKETS Orientation is vital. Make sure that the notches on the sockets match up with those on the PCB silkscreen. Once positioned, place the Control Board over them (the side without the pre-soldered SMD), flip the whole sandwich- thing around and then solder the sockets.

  • Page 5: Electrolytic Capacitors

    TRANSISTORS AND TEMPCO RESISTORS Transistor orientation is vital. Check that their curved and flat sides match those of the PCB silkscreen transistor’s outline. The tempco resistors must be touching the top of the transistor pairs to be thermally coupled with them and work as intended. If you have thermal paste on hand, apply a tiny bit between the transistor pairs and the tempcos before soldering.

  • Page 6: Control Board

    The Main Board now should look something like this: Control Board Open “Control Board – Bag A” HORIZONTAL RESISTORS Qty. Value Color coding Designator on PCB Brown – Black – Black – Brown – Brown R23, R24, R39, R40 Red – Black – Black – Red – Brown R10, R11, R42, R45, R48, R49 Orange –...

  • Page 7: Voltage References

    DIODES Polarity is vital. The black lines on the diodes must match with the white lines on the PCB silkscreen. Qty. Name Color Designator on PCB 1N4148 Orange (black line) D3, D6, D7, D8 1N4740A Orange (black line) 1N4741A Orange (black line) CERAMIC CAPACITORS Qty.
  • Page 8 Connecting the PCBs First of all, attach the two metal hex spacers to the CONTROL BOARD using a screwdriver (with just enough force, don’t overdo it). Make sure that the screws sit on the component side (front) and the main body of the spacers on the opposite side (back) like in the pictures below.
  • Page 9 Put the Control Board with its attached spacers facing up and components facing down. Then, place (but not solder yet) the pin headers in their respective positions with their male-side down, as in the following image: Now, place the Main Board on top (with its trimmers and power header facing up), wiggling the loose headers a bit until all pins emerge through the PCB.
  • Page 10 After soldering the headers, unscrew and carefully unplug the MAIN BOARD . Leave the spacers attached to the CONTROL BOARD as shown below. Hardware and front panel This part of the build is critical. Please read the following instructions carefully. Don’t solder anything until all of the following components are placed on the Control Board AND securely attached to the front panel.
  • Page 11 TRIMMER POTENTIOMETERS Push them in (carefully) all the way into their positions, checking that they’re sitting flush with the PCB. Don’t solder them yet. Qty. Name – Value Designator on PCB LCV 100kB, IMAGE 100kB, SongHuei 9mm – 100kB RCV 100kB, Res CV 100kB SWITCHES Now it’s when it gets tricky (kinda).

  • Page 12: Front Panel

    Set aside the Knobs bag for now. Before placing on the front panel and soldering, the Control Board should look something like this (remember to leave the spacers attached! ): FRONT PANEL Place the front panel and adjust the loose components from the top if neccesary (using fine tweezers or something similar) until all their threadings come through, verifying that the front panel sits parallel to the Control Board, and that the metal-shaft pots and jacks are flush with the back of the panel.
  • Page 13 KNOBS Put them onto the potentiometer shafts and tighten all the set screws with the provided hex key. INPUT LEVEL As the pot shaft is shorter than the rest, raise the knob a bit before attaching it to match the other knob’s height and to avoid it clamping onto the potentiometer’s thread.
  • Page 14 Back to the Main Board Open “Main Board – IC’s” Orientation is vital. The notches on top of the IC’s must match up with those on the sockets and PCB silkscreen, as shown in the picture below. Qty. Name Format Designator on PCB TL074 DIP-14...
  • Page 15 Calibration On this last step, we’ll calibrate the V/OCT tracking response of the filters. When properly calibrated, IMÁGENES can track across a 5 octave range, so we’ll be aiming for that. You’ll need some kind of sequencer or keyboard that can output control voltages in the 1V/OCT pitch standard.
  • Page 16 PCB component layout IMÁGENES - DIY Assembly Manual - rev 1.2 | Page 16...

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