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Exciter
3.0 Installation & Interfacing
3.1 INSTALLATION
The Exciter occupies a single rack space (45mm or 1-3/4 inches) of a standard EIA equipment rack. When rack
mounting, use the following recommended hardware: #10-32 x 3/4" Button Head Cap Screws with thick plastic or
nylon washers between the screw and the rack. If the rack does not have threaded thru-holes for the screws, then
we recommend a #10 Tinnerman Clip Nut.
Never restrict air flow through the device's vents. When installing the units into a rack, distribute the units evenly.
Otherwise, hazardous conditions may be created by an uneven weight distribution. Connect the unit only to a
properly rated supply circuit. Reliable earthing (grounding) of rack mounted equipment should be maintained.
Try not to position the Exciter directly above devices that generate excessive heat such as power amplifiers (unless
adequately ventilated) or near equipment with heavy transformer hum fields.
3.3 AC LINE CONNECTOR
Use only a power cord that carries approvals for use in your location. The Exciter's internal power supply is designed
to operate on nominal power sources from 100 to 240 volts a.c. at 50/60Hz without requiring the user to change
any settings. In the event of failure, do not attempt to change the internal fuse because it will never blow unless
the power supply fails catasrophically. When this occurs, the power supply will need to be serviced by a competent
service technician.
3.4 INPUT CONNECTORS
The input connectors are located on the rear panel. There are two input connectors per channel, one 1/4" TRS
phone type and one XLR-3F type. All inputs are fully balanced at all operating levels. Either of the input jacks can
be used unbalanced whenever necessary (consult the wiring diagrams, next page). You can take advantage of the
true balanced inputs by using a "pseudo-balanced" wiring scheme from any unbalanced outboard gear.
NOTE: The TRS and XLR input jacks are wired directly together, and will severely load each other down if equip-
ment is plugged into both inputs. Use only one or the other.
3.5 OUTPUT CONNECTORS
The output connectors are located on the rear panel. There are two output connectors per channel, one 1/4" TRS
phone type and one XLR-3M type.
3.6 OPERATING LEVEL SWITCH
Between the input and output jacks are located the Operating Level switches. These switches set the nominal oper-
ating level for all of the input and output jacks simultaneously to either -10dBV or +4dBu. You should select the
position that most closely matches your signal level.
3.7 GROUNDING LUG
Sometimes it just comes down to brute force grounding. Providing such heavy, low resistance, ground current
paths that little current is left to flow through your audio grounds. You can use 12 gauge, copper wire from chassis
to chassis. The grounding lug is provided for just such an occasion. Equipment in rack shelves can have their chas-
sis grounded to the metal rack frame and the frame itself can act as a brute force ground.
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