Wohler ATSC-1, Manual

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© 2006 Wohler Technologies Inc. ALL rights reserved
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Please refer to Figure 1b on the following page to familiarize yourself with the rear panel features of the ATSC-1
unit. The following sections describe, in some detail, the functions of each of the various features found on the
rear panel. The circled letters associated with each heading of the following section refers to the item reference
“balloon” (and leader arrows) used in the rear panel illustration to point out the locations of the items described.
Reference numbers (front panel) and reference letters (rear panel) are in parentheses when referred to in the main
text
A Power Connector
Attach a standard IEC-320 power cord between this connector and mains power (100 - 250VAC, 50/60 Hz). The
front panel power LED (Item 6) will glow green to indicate operating voltages are present.
B Analog Inputs - L Front/R Front/Center/LF EFX/L Surr/R Surr
These six inputs are meant to receive analog signals. They are panel mounted 3-pin female XLR connectors and are
configured for balanced (100K Ohm). Unbalanced signals may be connected between either pin 2 or pin 3 and pin 1.
In the case, a jumper must be added to connect the unused input (3 or 2) to pin 1. From left to right (as viewed from
the rear of the unit) the inputs are labeled L Front, R Front, Center, LF EFX, L Surr, and R Surr in keeping with
standard Surround Sound nomenclature. Although the ATSC-1 is primarily designed to monitor the six channels commonly
used in Surround Sound applications, it will monitor any six analog signals the user chooses to input at these connectors.
C Selected Output (Analog) - XLR Connectors
These two panel mounted 3-pin male XLR connectors are analog outputs of the source as selected for the left and
right speakers. The left and right XLR connectors output Channel A (left) and Channel B (right) of the six input
channels, in accordance with the settings of the right and left Speaker Select rotary switches (Items 7 and 8) on the front
panel. (This assumes the ALL/SELECTED toggle switch (Item 9) is set to “SELECTED”.) If the All/SELECTED
Channel Monitoring toggle switch (Item 9) is set to “ALL”, then both XLR connectors output a stereo mix of all six
main channels.
REAR PANEL CONNECTORS AND SETTINGS