Instruction manual

Stereo Audio I/O Boards

Optima Instruction Manual

Attaching Wires

When attaching stereo audio input and output wires, refer to the sheet labeled “AutoPatch Connector

Guide” that ships with the system. The sheet shows where to attach the wires on the rear of each

enclosure. Follow the sheet exactly; the system was programmed at the factory to operate only as

indicated on the sheet. For multiple-enclosure systems, each enclosure will be numbered (e.g., “Chassis

1 of 3”) on a label located on the left side near the power receptacle.

Signals may only be routed from the inputs on a board to the outputs on the same board because each

board has its own switching matrix.

To attach stereo audio input and output wires:

Unscrew the clamps on the audio connector.

2. Insert the wires (FIG. 51) for wire placement for balanced and unbalanced audio) and firmly

re-tighten the clamps to make proper connections.

Note: For stereo audio signals using twisted pair wire, connect the shield (ground) only at one end

(recommend receiving end) to minimize low frequency noise.

Wiring Sources and Destinations

Source and destination devices will require either balanced (differential) or unbalanced (single-ended)

connections. FIG. 52 illustrates the options for wiring between the sources and the input connectors and

between the output connectors and the destinations. More than one of these options can be used in the

same system. For balanced and unbalanced wiring details, see FIG. 51.

FIG. 51 Balanced and unbalanced stereo audio wiring

FIG. 52 Options for source-to-Optima-to-destination 5-term wiring

Balanced audio

Unbalanced audio

Optima Stereo Audio

5-Term Wiring

Source balanced

– wired balanced

Source balanced

– wired unbalanced

Source unbalanced

– wired unbalanced

Destination balanced

– wired balanced

Destination balanced

– wired unbalanced

Destination unbalanced

– wired unbalanced

Grey = Ground

Input Connectors

Output Connectors