15IPS Assembly Guide

Safety Precautions, Warranty, and Disclaimer Improper soldering and handling of electricity can cause serious injury and damage to your property. Read and understand the instructions below before beginning your project. Follow the instructions, build carefully, and use the appropriate tools. Build at your own risk. DIY Recording Equipment, LLC is not responsible for any damage or injury resulting from the assembly or use of your kit. You are the manufacturer of your kit. It is your responsibility to turn this group of parts into a working piece of recording equipment. DIY Recording Equipment, LLC does not guarantee the success of your project and disclaims any Implied Warranty of Merchantability. Please visit the support forum for assembly support.
Damaged or Missing Parts All kits and parts are checked before being shipped to you. If something arrives damaged or if your kit is missing a part, please open a support ticket to inquire about a replacement. Missing parts will be replaced at our expense. Damaged parts should be returned for verification. If the part shows signs of use beyond what was necessary to determine that it was damaged, DIY Recording Equipment, LLC reserves the right not to replace the part.
Welcome to the 15IPS Assembly Guide

Thank you for purchasing a !

If this is your first DIY project ever, we recommend reading our Getting Started Guide.

Table of Contents

Required Tools

You'll need the tools below to complete this build.

Soldering Iron
We recommend an adjustable-temperature station, such as the $40 Weller WLC100.

You can use 60/40 "leaded" solder or lead-free. We recommend 60/40 because it flows better and is easier for beginners to use.

Wire Cutters
You'll need a pair of good "snips" for cutting of the excess leads after soldering.

Optional Tools

These tools aren't strictly necessary but can make your build a bit easier.

If you find the color bands on resistors a bit hard to read, you can use a meter to sort them with absolute confidence.

Desoldering Pump
If you accidentally solder something in the wrong place, a desoldering pump can save the day.

0. Resistor Calculator

Type in the value of the resistor you need and this tool will show you the corresponding color code.

Check Revision

This assembly guide is for mkI of the 15IPS, which was discontinued in 2019. If you bought your kit after 2019, go to the new 15IPS assembly guide.

Place Connectors

Identify and Sort Components

Before you begin stuffing the board, it's a good idea to sort the components using the 15IPS Component Sorting Sheet (PDF).

Install Standoffs and Connector

Begin by snapping in the white nylon standoffs. Look closely at which side you are inserting. You should feel it snap in by inserting the flat side of the standoff into the Colour PCB. The other side is more rounded, which will make it easier to remove the Colour from the pallet. In order to keep the connector in place and level, snap in the stand offs before soldering.


Solder Connector

Solder the 8-pin connector with the longer leads facing down.

Place Resistors


Install Resistors and Bend Leads

Bend the resistors and insert them into the corresponding holes shown on the silkscreen. Remember, resistors are non-polarized components so no need to fret over which way they are inserted. Flip the PCB over and bend them against the holes in order to keep them in place before soldering.

Solder and Trim Resistor

Solder and trim the resistor leads.

Place Remaining Components


Diodes and IC Socket

Repeat the same process for the diodes. Unlike resistors, however, diodes must be installed with a certain orientation. Make sure to match the lines on the diodes with those on the PCB legend. Once all the diode leads are bent and held into place, insert the 8-pin IC socket into position, making sure to align the notch in the plastic with the notch on the PCB. Then flip the PCB over while holding the socket in place and solder the socket’s pins. If needed, use a small piece of tape to hold in place before flipping over. Trim the leads of the diodes.

Note: Because some batches of the 1N34A diodes are especially fragile, your kit may contain two extras. We threw these in just in case one breaks or arrives damaged.



Install the ceramic bypassing capacitors and the red film film capacitors. Bend the leads, solder and trim.

Insert IC

Finally, insert the IC into the socket. The IC's orientation is indicated by a circle next to pin one. Insert the IC with the circle facing the notch in the socket and PCB legend. Depending on when you purchased your 15IPS, the dual opamp may be labeled "2068D," "MC33072," or "NE5532P."

Final Checks

Before you wrap up, check the following things:

  • IC orientation: Does the dot/notch on the IC align with the notches on the socket and PCB?
  • Diode orientation: Do the stripes on the diode match those on the PCB?
  • Resistors: Do all of the resistor positions correspond the chart and/or sorting sheet?
  • Soldering: Is every solder joint shiny and clean? If one is cloudy or misshapen, try reheating it for 8 seconds and adding a tiny bit more solder.
  • Trimming: Are all of the excess leads trimmed down as close to the joint as possible?

All good? Congrats on finishing your build! Have a question or problem? Drop us a line.

Help Us Improve

1 2 3 4 5 6 7 8 9 10