User`s manual

7. COUPLER INSTALLATION
7.1. Choose your D-Sub connector installation method
Depending on how much time you are willing to spend, you can choose between two methods of how to
establish the D-Sub connection out of your preamp.
7.2. Method 1: D-Sub cable hanging out of preamp (quickest way)
1. Cut off the female jack from the supplied D-Sub cables
2. Drill a hole anywhere in the rear of your preamp, large enough for the cable, and feed it through.
3. Locate the potentiometer terminal solder points on the front PCB (see the re)
4. Cut the coupler wires “Ra” and “Rb” to about 20mm length and solder them to the potentiometer
terminals.
5. Use the enameled copper wire to connect the anode (“A” terminals) of all couplers together. To remove
the insulation and wet them with solder, heat the wire with the solder iron for about 20 seconds at 400°C.
Note: This must be done before connecting the wire to the couplers as they can be damaged by
excessive heat.
6. Strip off the cable jacket, and solder the wires directly to the couplers. The table below shows a popular
assignment of cables colors to pins, but please check with a multimeter before as there are cables
around using another color/pin mapping scheme!
Pin 1 black All Anodes
Pin 2 brown Cathode Ch 2
Pin 3 red Cathode Ch 4
Pin 4 orange Cathode Ch 6
Pin 5 yellow Cathode Ch 8
Pin 6 green Cathode Ch 1
Pin 7 blue Cathode Ch 3
Pin 8 violet Cathode Ch 5
Pin 9 white Cathode Ch 7
7. Use cable ties and/or hot-melt to fix the wires to the anode wire as required.
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Picture 3: Pinout of Silonex NSL-32SR2