sonifex RB-DMA2 sonifex rb dma2

RB-DMA2

Dual Digital Microphone Amplifier

Catalogue

Audio & Video Interfaces - Microphone Amplifiers & Limiters

RB-DMA2 Dual Digital Microphone Amplifier

Category: Microphone Amplifiers &

Limiters.

Product Function: Amplification of two

mic level signals to line level & AES/EBU
outputs

Typical Applications: To amplifiy

additional microphones in a studio
talks area, court room microphone
amplification, converting mic signal where
mic and amp are a long distance apart.

Features: See RB-ADDA & RB-MA2.

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.

Audio & Video Interfaces - Microphone Amplifiers & Limiters

The microphone inputs are XLR-3 type and
are electr

onically 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.

Specification For RB-DMA2

Audio Specification

Input Level: Max -25dBu, Min -62dBu to give FSD

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Input Gain Range: 37dB

Low 125Hz @ 6dB/octave
Frequency Roll-off:

Signal To Noise: 130dB EIN

Dynamic Range: >110dB

Distortion <0.01% THD + N absolute @ 1kHz
And Noise:

Phantom Power: 48V

Connections

Microphone 2 x XLR 3 pin female (balanced)
Inputs:

Sync Inputs: 1 x AES/EBU XLR 3 pin female
(balanced)
1 x S/PDIF RCA phono socket,
1 x TTL BNC female

Analogue 2 x XLR 3 pin male (balanced)
Outputs:

Digital Outputs: 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

Fuse Rating: Anti-surge fuse 100mA 20 x 5mm
(230VAC)
Anti-surge fuse 250mA 20 x 5mm
(115VAC)

Equipment Type

RB-DMA2: Dual digital microphone amplifier

Physical Specification

Dimensions 48cm (W) x 10.8cm (D) x 4.2cm (H) (1U)
(Raw): 19” (W) x 4.3” (D) x 1.7” (H) (1U)

Dimensions 58.5cm (W) x 22.5cm (D) x 7cm (H)
(Boxed): 23” (W) x 8.9” (D) x 2.8” (H)

Weight: Nett: 1.6kg Gross: 2.2kg
Nett: 3.5lbs Gross: 4.8lbs

www.sonifex.co.uk

UK Ofce:

Sonifex Ltd

61 Station Road, Irthlingborough,
Northants, NN9 5QE, UK
Tel: [phone]
Fax: [phone]

Email: [e-mail]

Australian Ofce:

Sonifex Pty Ltd

12/6 Leighton Place,
Hornsby NSW 2077, Australia
Tel: [phone]
Fax: [phone]
Email: [e-mail]

2021