EPK Orange Juicer User manual

Orange Juicer Compressor
Kit Building Manual

Effect Pedal Kits:
Orange Juicer Compressor
The Orange Juicer is based on the Dan Armstrong Orange Squeezer.
This effect pedal is well known for its smooth compression. Originally,
it was designed to be mounted directly on the guitar, but the Orange
Juicer is adapted to the stompbox format to fit a standard aluminium
enclosure. Some of the most famous tones of the Orange Squeezer can
be heard in ‘Sultans of Swing’, as Mark Knopfler was known for using
this compressor in Dire Straits.
Unlike other compression effect pedals that use an optocoupler or a
specialized opamp ic, the Orange Juicer creates the compression using
JFET transistors. Because of that, the part count is low making the
Orange Juicer an easy build. The amount of compression and sustain
can be set by dialing the internal trimmer to your personal preference.
As the Orange Squeezer, it’s a great pedal to place before an overdrive
or distortion pedal to push it harder!very subtle effect, but you’ll miss
it once you turn it off!

BOM (1/2)
Resistors (11) Capacitors (7)
1 R1 82k 2 C1, C4 47n
1 R2 1M 1 C2 2.2n
3 R3, R6, R11 470k 4 C3, C5, C6, C8 4.7u (electrolytic)
1 R4 2.4k
1 R5 390k
1 R7 220k
1 R8 10k
1 R9 1.5k
1 R10 100k

BOM (2/2)
Diodes, Transistors and ICs Generic Parts and Potentiometers
1 U1 TL072 1 Battery clip
2 Q1, Q2 J113 1 DC Jack
1 D1 1N914 1 RLED 1k LED resistor
1 TR1 10k Trimmer 1 LED Bezel
1 3PDT
2 IN, OUT 6.35mm Jacks
1 10k Logarithmic (A) Potentiometer Out

Component Placement

Board Layouts
3PDT PCB
Effect PCB

Building Tips
1- Pay attention to the orientation of the 3PDT! In the following picture
you can see how the 3PDT pins should be positioned (inserting the pins
in the holes can be a bit tight to avoid movement while soldering):
2- For a proper soldering you just have to apply the right amount of solder
wire. A right solder joint should have a concave shape around the joint
and look like this:
3- Don’t apply too much heat! When soldering, the time you hold the
solder iron against the joint should be as short as posible to avoid
damaging any part (a few seconds should be enough). If you can’t get a
solder joint right, let it cool a bit before trying again.
4- If having troubles with the building, checking the schematic in the last
page will help you find where the audio signal stops. When you find the
spot, check out that everything around that joint is ok (components
placed at their right place, solder joints…).

Building Tips
5- Pay attention to the parts that have a polarity and make sure they are
connected as in the component placement picture:
- ICs (they have a small dot or indication that must fit the indication in
the board
- Electrolytic capacitors (longer pin is connected to the “+” hole):
- Diodes (check for the mark and make it fit with the one in the PCB):
- Leds (longer pin is connected to the “+” hole)
- Transistors (inserted to fit the drawing in the PCB)

Building Tips
6- With the kit we include plastic PCB supports with an adhesive bottom. You
can use them to anchor the PCB to your enclosure for a better stability.
Just insert the PCB support tip into the 3.5mm holes and remove the
adhesive protective film.
To avoid any issue always check the latest building manual. Use the pictures
only as a reference! Colors/shapes of wires, PCB or parts can change slightly,
this doesn’t affect their functionality in any way.
Always double check part polarity, resistor and capacitor values,
potentiometer placement, IC orientation… before soldering.

Schematic