Set-Up Routines Module 1-4; Setting Up An Input Channel; Aux Return/Aux Outputs; 2-Track Inputs - D&R AIRMATE-USB Manual

AUX RETURN
The Aux return connectors are controlled by the Aux return control on the master section. The signal is connected
directly to the master main mix busses. You can connect reverb returns or other stereo signals without using any
input modules. The input level should -10dBv as a minimum.
AUX OUTPUTS
The aux outputs are on two RCA Cinch connectors with the signal coming from the aux send controls in the chan-
nels. The level is +4dBu (1.22 volt).
You can connect the inputs of reverbs from these outputs or use them as a monitor output, after you jumper the
Aux send in the channels to pre fader.

2-TRACK INPUTS

These inputs are intended to return stereo machines in the monitor section.
Such as signals from master recorder/tuners etc. The level needs to be -10dBv (300mV) as a minimum for opti-
mum signal to noise.
MASTER OUTPUTS
The master outputs are 3 pin male XLR connectors and are ground compensated balanced with all the advantages
of balancing are maintained when connected to a balanced input of a power amp, professional recorder, or On-Air
processor. The output level is +4dBu (1.22 volt).
GROUND CONNECTOR
This terminal can be used for grounding Phono players as well as the central ground point in a complex installation
set-up.
MAINS CONNECTOR
The mains inlet is a Euro type connector with built in fuse. Your AIRMATE-USB can accept voltages between 210
volts and 230 volts 50/60Hz or with the proper modification for 120 volts. When using the Airmate-USB at 220
volts, a 1 amp slow-blow fuse should be used, however, when using the mixer at 120 volts, a 2 amo slow-blow
fuse should be used. Consult with your local dealer or D&R Service Center for power supply modification to change
from 220 volts to 120 volts AC. Never replace either fuse with a higher value.

10. SET-UP ROUTINES MODULE 1-4

- Connect a power-amp, recorder, or transmitter to the left/right outputs.
- Connect a high impedance headphone to the "phones" jack socket on the master section.
- Connect the microphones as described.
- Now, connect turntables, CD players, and jingle machines.
- If more than 2 Telephone Hybrids are needed, you can connect another Hybrid to the Clean feed output.
that Jumper J7 is on position 3-4 to avoid feedback when returning the Telephone Hybrid output on the channels.
- Connect a red light indicator when there is a need for it.
- The Announcer output can feed high impedance (400 ohms and above) stereo headphones directly.
- Now with everything connected, follow the adjustment procedure.
Note; for mikes, only activate the grey Mic switch, for line level, leave this switch up and select line A or B.
- Put on your headphones and turn the headphone volume control to the "12 o'clock" position.
- Turn all the gain-controls and the master-control off (counter clockwise).
- Set all equalizer-controls to the "12 o'clock" position.
- All pushbutton-switches should be in the up position. (See above).
- Switch on the power-supply, the first LED in the LEDbars should be on.

SETTING UP AN INPUT CHANNEL

Push the CUE switch in a channel that is connected to a source.
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Now slowly turn the GAIN control clockwise until you hear and see the input signal on the LEDbars in the
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master section.
You can change the input sound by adjusting the equalizer-section.
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• If you adjusted the equalization, once again check the level on the led bar, because
increasing specific parts of the frequency spectrum can easily add more gain to the signal.
If you can't get enough gain (when you have a low sensitivity dynamic microphone) the jumper on J5 (on
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the channel PCB)should be removed to get an extra 20dB of gain.
The LEDbar indication should be between 0 dB and +6 dB (the yellow area) to get a proper
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level on amplifiers or recording devices.
The LEDbar is a VU meter indicating the absolute level that enters the console.
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• It is calibrated to indicate 0 dB on the scale corresponding with a +4dBu output level.
Release the CUE switch so the led bar now reads the output signal again.
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Now push the ON button to connect the input signal to the fader.
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Be sure