User`s manual

4. IMPORTANT SAFETY NOTES
 Never connect any other equipment (RS232 etc.) to the D-SUB outputs!
The equipment and/or the Remote Gain Controller may get DAMAGED!
Microphone preamplifiers contain parts operating at mains voltage. Only trained persons may
open, repair or modify such devices! Observe the following precautions when modifying devices:
 Disconnect the mains cord before opening any microphone preamp
 Make sure not to damage insulating parts
 Make sure newly installed equipment is kept away from internal mains voltage and properly
isolated.
5. OPERATION
5.1. Selecting the device address
To allow multiple remote gain controllers on one MIDI port, the device address (= MIDI channels) where the RGC
responds to can be altered. Use DIP-Switches 1/2 to set the MIDI channels (see 14. MIDI Interface).
5.2. Selecting the preamplifier type
The RGC supports four different control curves for different types of preamps.. Curve selection is individually for
each preamp output, that means that different preamps can be mixed on a single RGC.
DIP “AMP
TYPE”
setting
Preamp models Coupler type Potentiometer mimic Minimum
firmware
version *
OFF OFF Behringer ADA8000
ART TubeOpto 8
Presonus Digimax D8
Mackie Onyx 800R
Silonex NSL32-SR2
5..10k negative logarithmic 1
OFF ON Focusrite OctoPre MkII
Focusrite OctoPre Dynamics
RME Octamic
RME Octamic II
Silonex NSL32-SR2
25..50k negative logarithmic 2
ON OFF Reserved for custom preamp curve
ON ON -
5V/500 Ohm Reed Relays
Digital mode 2
* See bottom of the device for firmware version. For upgrading, please contact us.
We will continue to add more pre-defined curves on customer request; please contact us with your
requirements. The characteristic curves can also be altered by the user via MIDI SYSEX messages.
See Chapter 15.1 List of advanced settings for more information on this.
5.3. Active/passive mode
Using the white “ACTIVE” button, the controller can be switched to inactive mode (disabled). All outputs are then
switched off, and the couplers reach maximum resistance (several mega-ohms). This makes them appear to the
preamp as if they were removed, and gain control can be done traditionally using the preamp's potentiometers.
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