AWB95 Assembly Guide
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.
Thank you for purchasing a AWB95 kit! Depending on your level of experience, you should be able to turn the pile of parts in front of you into a working piece of recording gear in about 45 minutes.
If this is your first DIY project ever, we recommend reading our Getting Started Guide before, well, getting started.
If you have any questions please don't hesitate to contact us for support.
Prepare for Assembly
All that's required to build the AWB95 is:
- Soldering iron and solder
- Wire cutters
If you don't have any of these tools, see our Recommended Tools page.
Populate Bag 2
Open bag 2 and sort the resistors by their values, bending their leads at the body as you go. You can sort resistors using a multi-meter or their color code.
Place the resistors in their respective places on the PCB.
As you insert each resistor, bend its leads against the bottom of the PCB to keep it in place.
Now solder the resistors to the PCB. Observe good soldering technique: heat the pad and lead for 2-3 seconds, apply a small bit of solder, and continue to heat the pad for another 2-3 seconds.
Once all of the solder joints have cooled, use your clippers to trim away the excess leads. Your goal should be to clip as close as possible to the joint without clipping the joint itself.
Populate Bag 3
Place Polarized Capacitor
Open bag 3. There is one polarized capacitor in the kit which requires special attention. Find the gold, 3.3uF capacitor. The longer lead is positive, while the negative lead is marked by a black stripe on the body. Place the capacitor in the C5 position with the positive (longer) lead in the square pad on the PCB. Then bend the leads against the PCB to hold the cap in place.
Place Inductors and Remaining Caps
Now place the remaining components in bag 3. Make sure to line up the stripes on diodes D1 and D2 with the stripe on the PCB. Bend, solder, and trim the leads as you did with the resistors.
- C1, C2, C3 - Red, marked "0.1" on body, not polarized
- C4 - Blue, marked "1nJ63" on body, not polarized
- D1, D2 - Clear with two black stripes, not polarized
- L1 - Brown, similar to resistor, not polarized
- L2 - Black, marked "221" on body, not polarized
Populate Bag 4
Unwrap the transformers in bag 4. Place the smaller transformer in the T1 position with the "P" printed on the body on the side marked "P" on the PCB.
Place the larger transformer, marking sure to line up the "P" on the body with the "P" on the PCB.
Populate Bag 1
Place Standoffs and Header
Open bag 1 and pop the standoffs into the four mounting holes from the bottom of the PCB. Insert the locking ends with right-angle tabs into the PCB and leave the removable ends to be inserted into your Palette.
Now insert the 8-pin header into the holes marked "CON1." Make sure to place the short, silver pins through the PCB so that the black posts and long, gold pins protrude from the bottom of the PCB. Solder the header to the PCB.
Place IC Socket
Place and solder the IC socket in the U1 position. Make sure to align the notch in the plastic with the corresponding notch on the PCB. The capacitors on either side should hold it in place when you flip the PCB over for soldering.
Place the 4558D opamp in the socket. Align the dont with the notch in the socket and PCB.
That's all there is to it! Before you plug in your new AWB95, we recommend checking the following things:
- C5 orientation: is the black stripe on the side closest to the "R8" marking?
- U1 orientation: is the dot on the IC on the side closest to C2?
- Diode orientation: are the stripes on D1 and D2 closest to the bottom of the PCB?
- Resistors: do all of the resistor positions correspond to the chart in step 2.1?
- 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? Get Colouring! Have a question or problem? Drop us a line.