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Congratulations on your purchase of a new OneShot chassis! The PC01 OneShot combines a
rugged enclosure, power supply, and discrete instrument DI in a compact 1/4U package. A
few minutes of assembly are all that is required to ensure years of reliable service.
Who Should Build This Kit?
The PC01 is not difficult to assemble, but it is not intended for absolute beginners. If you've
never built an electronic project before, this is probably not the one to start with. To guarantee
success, make sure you have:
•
The ability to make basic voltage and resistance measurements using a digital
multimeter (DMM).
•
At least a rudimentary understanding of voltage, current, and resistance.
•
Some experience soldering on printed circuit boards.
•
The patience to follow instructions precisely and work carefully.
Essential Tools
Fine tipped 20-30 watt soldering iron w/ cleaning sponge (Hakko 936 or similar)
Eutectic (63/37) rosin core or "no clean" solder (.025" diameter is usually best)
Small needle nose pliers
Small diagonal cutters
Wire stripper
Phillips screwdriver (#1)
3/32" Hex Driver
Highly Recommended Tools
½" Socket
Work Area
Find a clean, stable, well-lit work surface. An anti-static mat is highly recommended for this
project. Good lighting will make assembly much easier.
Soldering Technique
Make sure your iron's tip is tinned properly and keep it clean! The trick to making perfect
solder joints is to heat the joint quickly and thoroughly before applying the solder, and a
properly tinned and clean tip is essential for this. Apply just enough solder to thoroughly
encapsulate the joint, but don't use too much. The finished joint should be smooth and
shiny, not rough or gritty looking.
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Table of Contents
Summary of Contents for Seventh Circle Audio OneShot PC01
- Page 1 Congratulations on your purchase of a new OneShot chassis! The PC01 OneShot combines a rugged enclosure, power supply, and discrete instrument DI in a compact 1/4U package. A few minutes of assembly are all that is required to ensure years of reliable service. Who Should Build This Kit? The PC01 is not difficult to assemble, but it is not intended for absolute beginners.
- Page 2 Instruction Conventions indicates a step where extra care needs to be taken. Doing it wrong isn’t a Text in orange disaster, but it’ll need to be corrected. Text in indicates a step that must be done correctly. Doing it wrong will guarantee improper operation, and probably damage components and/or the circuit board.
- Page 3 Input Z. To enable input impedance switching, solder jumpers from the P1- and P2+ pads on the OneShot to the appropriate transformer terminals on your module. Keep in mind that only modules with split-primary input transformers, namely the N72 and J99, will work with the “Input Z”...
- Page 4 Assembly Before you begin, carefully unpack the kit and examine the parts. Check the contents of each small bag against the BOM to make sure all the parts have been included. If you think something’s missing, please e-mail the details to sales@seventhcircleaudio.com we’ll ship replacement parts ASAP.
- Page 5 10. Maneuver the rear panel over the XLR connectors and into position as shown. Use 2x M2.5 x 6mm screws to secure the panel to the XLR connectors. You may need to remove the back panel from the PCB connectors! Use 2x #4 x 1/8” flat head screws to attach the rear panel to the bottom half of the chassis.
- Page 6 14. Carefully work the aluminum front panel over all of the shafts and bushings and secure with 4x #4-40 black cap screws as shown. Take care to align the LED so it protrudes through the hole in the panel 15. Install the serrated washers and panel nuts.
- Page 7 18. Congratulations! You’ve got an assembled OneShot preamp!
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