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ARP Pro Soloist & Pro DGXLED Slider
Installation Manual
Introduction
Thank you for purchasing an LED slider upgrade kit for your ARP synthesizer.
These sliders not only look great, but they feel beer than the original ARP
CTS sliders. This installation guide will show you how to install the slider
kit and the 5 volt power supply. For best results, this kit should only be
installed by qualified technicians. If you are unfamiliar with electronics,
please seek out the skills of a qualified technician who can install this kit.
The installation should take between 4 and 8 hours in most cases. Take your
time, and always check twice before drilling or soldering.
Kit Contents
• LED Adapter PCBs - Standard Type (4)
• Sho Jumper Cables (4)
• Med Length Jumper Cables
• Length of Red and Black Wire
• Soldering Iron
• Wire Strippers
• Desoldering Tool (Such as Hakko 808 or Similar)
Tools Required For Installation
1) Remove all slider caps from the ARP, then remove all PCBs from chassis.
Desolder all old CTS sliders and remove them from the boards. Always be
sure not to damage PCB traces when doing this.
When all sliders have been removed, clean the PCBs of dust and flux.
Installation of Sliders
Figure 1 - Test Fiing all Sliders (ARP Omni 2 shown)
2) Using the PCB pas diagrams in Drawing 1,2, and 3, place all of the slider
assemblies into the PCB as shown in figure 1. DO NOT SOLDER YET. This al-
lows for the chance to test fit the assembly, and also makes it easier to wire
the sliders together.
3) Double check the slider values and tapers. Using the jumper cables in-
cluded with the sliders, begin wiring the slider assemblies as shown in fig-
ures XX-XX. Be sure to wire all V+ pins together, and all GND pins together. It
is easy to make a mistake and reverse the polarities when using the longer
cables. Be sure to double check your work before you solder.
Build wire assemblies. When completed, the assemblies should still be
placed loosely into the PCB, as shown in Figure 2.
Figure 2 - Slider Wiring Assembly Completed. (Sliders still just loosely placed into PCB. ARP Omni 2 shown)
4) Using elastic bands, clips or other means, hold the sliders into place so
the PCB can be flipped over for soldering. Don’t worry if the sliders are
straight. They will all be aligned and straightened when the assembly is tack
soldered into place. THE SLIDERS MUST BE TACK SOLDERED INTO PLACE BY
ONLY ONE PIN. This will allow the slider assemblies to be held in place on
each PCB while each slider is leveled and aligned.
Now that the slider asseblies are held in place, heat up the tack solder joint
holding each slider into place and adjust so that slider shas are perpen-
Figure 3 - Sliders Assembly Tack Soldered (Each slider soldered in place by only one pin)
dicular to the pcb and the slider PCB is parallel with the ARP PCB.
Notice that the sliders can easily be moved into alignment by gently
moiving them or heating up the tack solder joint. Don’t hold the sol-
dering iron tip to the tack solder joint for more than 2-4 seconds. Too
much heat can cause the slider adapter PCB pins to become unsol-
dered.
You can now test fit the PCB to the chassis. When you have fit the
PCB back into the chassis of the synth, screw the PCB into place. Ad-
just any sliders that arent straight, then solder each sliders remaining
pins int the PCB. When the PCBs are screwed into the chassis, you
can gently hold the slider into the desired position and solder the
remaining legs.
5) When the assemblies have been wired to the PCBs, you can con-
nect the LED assembly to the synth’s +5V power supply. This allows
Figure 4 - Slider Assemblies Wired Into PCBs (All sliders aligned. ARP OMNI 2 shown)
for brightness adjustment of each LED.
Using a preferably non conductive jewelers screw driver, adjust the LED
brightness for each slider. If using custom colors, be sure to cut the legs
of the enclosed LEDs to the same length as the legs of the LEDs that
came mounted in the sliders. If the LED is put into the slider backwards,
that LED will not light. Reverse LED polarity if this happens. To power
the LED assembly on a Pro Soloist, connect the +V wire to J2 pin 7 (+5V) ,
and the GND wire to J2 pin 1 (0V) on Board A. The wires can be connected
anywhere along the trace connected to the aformentioned pins.
When LED assembly is prooperly powered you can adjust each slider’s LED
brightness level.
Figure 5 - Slider Assembly Powered. (LED brightness being adjusted on each slider)
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