AUDIO INTERFACES Redbox - Microphone

AUDIO INTERFACES Redbox - Microphone
AU D I O I N T E R FAC E S
RB-DMA2 Dual Digital Microphone Amplifier
“
The unit can either be used as
two independent microphone
amplifiers, or one mic input can be
copied to both channels of the
digital output.
”
The RB-DMA2 consists of two independent
low-noise microphone pre-amplifiers for
converting microphone level signals to a
digital AES/EBU or S/PDIF output. Individual
analogue balanced line level outputs are
also produced for use, for example, to feed
talkback systems. The unit can either be
used as two independent microphone
amplifiers, or one mic input can be copied to
both channels of the digital output.
The microphone inputs are XLR-3 type and
are electronically balanced. The input gain
for each input can be adjusted individually
by a volume control on the front panel
enabling the use of dynamic and powered
microphones and each has a LED level
indicator. For each channel there are
independent switches to control a high pass
filter (low frequency roll-off at 125Hz) and to
provide phantom power at +48V to
the connected microphones.
The RB-DMA2 has AES/EBU,
S/PDIF and TTL word clock
sync inputs and has
the same sync modes,
bit depth selection,
channel status bit
adjustment, front
panel LED
synchronisation and calibration
routine as the RB-ADDA. Please refer to that
product for further information.
Audio Specification For RB-DMA2
Input Level:
Max -25dBu, Min -62dBu to give FSD
Input
Impedance:
2kΩ nominal
Input Gain
Range:
37dB
Low
Frequency
Roll-off:
125Hz @ 6dB/octave
Signal
To Noise:
130dB EIN
Dynamic
Range:
>110dB
Distortion
And Noise:
<0.01% THD + N absolute @ 1kHz
Phantom
Power:
48V
Connections
Microphone
Inputs:
2 x XLR 3 pin female (balanced)
Sync Inputs: 1 x AES/EBU XLR 3 pin female (balanced)
1 x S/PDIF RCA phono socket,
1 x TTL BNC female
Analogue
Outputs:
Digital
Outputs:
2 x XLR 3 pin male (balanced)
1 x AES/EBU XLR 3 pin male (balanced),
1 x S/PDIF RCA phono socket
Mains Input: Filtered IEC, switchable 110-120V,
or 220-240V, fused, 10W max
Equipment Type
RB-DMA2:
Dual digital microphone amplifier
Physical Specification
Weight:
Nett: 1.6kg Gross: 2.2kg
Dimensions
(Raw):
(Boxed):
48cm (W) x 10.8cm (D) x 4.2cm (H) (1U)
53cm (W) x 20.5cm (D) x 6cm (H)
R e d b ox - M i c r o p h o n e A m p l i f i e r s & L i m i t e r s
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