2.2 REAR PANEL
17, Mains connector
Connect the supplied mains cord to the mains connector. The Dx 38 is capable of handling mains voltages
between 90 V AC to 250 V AC, so that switching the mains on the appliance is not necessary.
18, Extension-slot for retrofitting optional interface boards
This slot offers the possibility to retrofit different interface boards. Available are: a RS-232 interface, a
RS-485 interface and a card for the connection of switching contacts (switches, relays) for remote program
selection. For further details about the cards and their installation, please refer to the chapter “RETRO-
FITTING INSTRUCTIONS”, starting on page 11-3.
19, MIDI IN / THRU / OUT connectors
These sockets allow to control several Dx 38 via a single master unit. Exchanging memory contents in
both directions is possible as well. Via MIDI, data communication between the Dx 38 and a computer’s
desktop is possible as well, providing that a standard MIDI-interface has been installed in your PC /
Notebook.
20, OUT 1 - 4 connectors
These are the 4 balanced outputs of the Dx 38. The signals of these sockets supply different frequency
bands, depending on the appliance’s configuration (2-WAY, 3-WAY, 4-WAY). Please make sure that your
power amplifiers and/or loudspeaker systems are always connected to the correct output channel. The
individual configuration of the output channels is displayed through the “channel status indicators” on the
front panel.
The pin-assignment of the inputs and outputs is explained in detail in chapter 3.
21, IN 1 / IN 2 connectors
These are the 2 balanced inputs of the Dx 38. Each input employs a Direct Out connector which allows
to feed the unaltered input signal to another Dx 38 or to any other device that needs to be operated with
the unaltered source signal. In stereo or dual mode as well as in the monaural sub woofer mode, both
connectors (LEFT / RIGHT) have to be connected accordingly. For all other operation modes using only
the IN 1 (MONO) connector is sufficient. The pin-assignment of the inputs and outputs is explained in
detail in chapter 3. Connection-examples for different configurations are provided in chapter 6.
CONTROLS AND CONNECTIONS
2-3
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