Master Section; Ledbar Meters; Master Mono Switch; Follow Phones - D&R AIRMATE-USB Manual

8.

MASTER SECTION

The AIRMATE-USB master section houses all the controls for the mix buss faders and master controls for Aux re-
turn, 2-Track play-back, and master outputs. Individual functions are described below.

LEDBAR METERS

The master section has two high-res 21 segment LEDbar meters with VU meter Ballistics. Depending on which
switch is pressed (Cue on channels, AUX SEND master, AUX RET, 2 TRACK, etc.), the master meters will allow the
reading of all input and outgoing signals. The attack and release time constants conform to International VU meter
standards, being 300mSec for attack and decay. The green area of the LEDbar is the safe area and the yellow area
(3 led's) is the range that normally would be on with the proper amount of signal. Occasionally a red led on is no
problem.
The output of your AIRMATE-USB is +4dBu (1.22v) ("0" VU) when
the top green LED is on.

MASTER MONO SWITCH

This switch turns the stereo signal into mono for both main outputs.
Using this switch is a convenient way to check and balance the left
& right signals before going to stereo as well as checking the overall
Phase response. Also when one side of the stereo signal is not avail-
able, the mono switch directs the mono signal to both outputs.
AUX SEND
The stereo AUX SEND master controls the sum of the entire indi-
vidual Aux send signals coming from the input channels.
AUX CUE
The AUX SEND CUE switch allows for the master LED bar meters to
display the Aux output signal of the Aux master as well as hear the
signal from the AUX buss.
It is necessary to turn the AUX SEND master control up to create
and show an outgoing signal.
MONITOR
The MON (monitor) control is fed by the master outputs pre (before)
the master faders. This can be used as an extra stereo output for re-
cording or a sound system in which you do not want the master fad-
ers to change the out-going signal.

FOLLOW PHONES

This switch is an input selector for the MON (monitor) output. In-
stead of listening to the main outputs, it allows the user to listen to
the phones output. This feature is used by announcers and DJ's that
do not want to use headphones.
2-TRACK
The 2 TRACK switch allows for playback of the outputs from stereo
devices such as CD players, tape machines, computer sound cards,
iPods, etc. to be routed to the MON (monitor buss). Its sensitivity is
-10dBv (300mV).
Note: The Cue system (from anywhere in the mixer) will interrupt
the 2 track signal when activated.
AUX RETURN
This stereo input is intended to be used for returning the stereo out-
puts of reverbs or other effects gear and is connected directly to the stereo main mix buss. It can also be used to
connect the output of other mixers so you don't use input channels.
CUE AUX RETURN
This switch enables you to listen to an incoming Aux return signal before the AUX RET (Return) control pot.
BALANCE
The balance knob controls the balance between the main stereo output and the stereo Cue signal when selected.
With the balance control anywhere between Cue and L/R you always have control over the main output signal
even when a Cue switch is activated.
Note: The split switch de-activates the balance control.