–1.1 Mounting the Control Matrix

–1.2 Power Supply Wiring

–1.3 Connecting the Ribbon Cables

1.1 – Mounting the Control Matrix
If using a pre-machined front panel, simply mount the Control Matrix PCB using the supplied hardware. It is not necessary to fit the ribbon cables between Logic/PSU Module and the Volume Control and Selector Module if the pcb is used as a single module (ie not broken is 3 parts)


If fitting to your own front panel or into existing equipment use the supplied drill guide to drill the necessary holes. Several fixing options exist, including for the use of standoffs; use what is most appropriate for the actual application.
If it is necessary to detach the Volume Control and Selector modules, use a sharp hobby knife and cut cleanly along the lines indicated (they are also printed on the PCB) several times. This will cut the connecting PCB traces cleanly.


Following this, the Volume Control and Selector modules can be broken off quite easily.


1.2 – Power Supply Wiring
 If your local power supply is in the range of 100V to 120V AC wire up the mains connections as shown below.


If your local power supply is in the range of 220V to 240V AC wire up the mains connections as shown below.
In order to ensure electrical safety please make sure that the PCB is mounted at least 6 mm Distance between its solder side (lower surface) and nearest metal chassis part (e.g. the front panel).


1.3 – Connecting the Ribbon Cables
The Control Matrix PCB is fitted with five connectors for IDC type ribbon cables.


Four of these connectors are of the 16-Pin type. They are used to connect the Volume Control and Selector modules to the Logic/PSU module if they have been detached from each other.


If the whole Control Matrix has been retained as a single block it is not necessary to connect these cables.


Make sure you connect the correct module to the correct socket (the sockets on the Logic/PSU Module are labeled, as are the Volume Control and Selector modules.


Shown below is the Control Matrix with all cables connected correctly. Note: the two outside cables are not needed if the volume and selector modules have NOT been detached
The fifth connector is a 14-Pin type and connects the Logic/PSU Module to the Audio Matrix. This cable carries the analog and digital power supplies and the control signals for the input selection and the DS-1666 analog potentiometers. The logic lines are only active when the volume or input is changed and normally there should be no need for any additional shielding or other special routing precautions.


If using multiple Audio Matrix PCB‟s the cable from the Control Matrix connects to one of the two connectors on the Audio Matrix, the second board is connected using a short IDC jumper cable to the first one and so on.


The power Supply on the Audio Matrix can supply up to three Audio Matrix PCB‟s with the J-Fet buffer circuits fitted or six Audio Matrix PCB‟s without J-Fet Buffers.