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Sonifex RB-DMA2
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Sonifex RB-DMA2

Préampli à transistors de la marque Sonifex

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  • Fabricant : Sonifex
  • Modèle : RB-DMA2
  • Catégorie : Préamplis à transistors
  • Fiche créée le : 27/03/2019

Desciption:

The RB-DMA2 consists of two independent low-noise microphone preamplifiers for converting microphone level signals to digital AES/EBU, or S/PDIF, and analogue line level outputs.
The RB-DMA2 can be used as a front end for digital mixing desks or routers, which do not have microphone inputs.
The analogue outputs can be used for routing to talkback systems.
The microphone inputs are XLR-3 type and are electronically balanced.
The input gain for each input can be adjusted individually by coarse and fine gain controls on the front panel and each input has a level indicator.
Additionally the fine gain control knob can be disabled by internal jumpers.
A switch on the rear panel allows input 1 to be routed to both left and right digital outputs, or as input 1 to left output and input 2 to right output respectively.
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.
It also has AES/EBU, S/PDIF and Word Clock sync inputs.

Technical Specifications:

Connections:
Analogue Mic Inputs 2 x XLR 3 pin (balanced)
Analogue Line Outputs 2 x XLR 3 pin (balanced)
Digital Sync Inputs 1 x AES/EBU XLR 3 pin female
1 x S/PDIF RCA phono
1 x TTL BNC female (sync) 50 ohm impedance
Digital Outputs 1 x AES/EBU XLR 3 pin plug
1 x S/PDIF RCA phono socket
Mains Input Filtered IEC, 110-120V, or 220-240V switchable,
fused 10W max
Fuse Rating Anti-surge fuse 100mA 20 x 5mm (230VAC)
Anti-surge fuse 250mA 20 x 5mm (115VAC)
Audio Specification:
Min/Max Input Level -63dBu / 5dBu to give FSD
Input Impedance 2kΩ nominal balanced
Gain Range 68dB
Signal to Noise 128dB EIN
Dynamic Range >110dB
Distortion and Noise < 0.01% THD + N absolute @ 1kHz
Phantom Power +48V
Low Frequency Roll-off 125Hz @ 6dB/octave
Analogue Output Level +18dBu Ref. FSD
Operational Controls & Indicators:
Bit Depth 16, 20 or 24 bits via DIP switch
Digital Output Select AES/EBU or S/PDIF, via push-switch
Sample Frequencies 32kHz – 96kHz, via rotary switch
Sync Modes Master, Slave, Auto, Auto-Lock via rotary switch
Digital Input Select AES/EBU or S/PDIF, via push-switch
Channel Status Bits Set to consumer or professional mode via DIP switch
Output Routing Set dual mono output via DIP switch
Led Level Green ind. -18dBFS, Orange ind. -12dBFS, Red ind. -6dBFS
Equipment Type:
RB-DMA2 Dual digital microphone amplifier
Physical Specifications:
Dimensions (Raw) 48cm (W) x 10.8cm (D) x 4.2cm (H) (1U)
19” (W) x 4.3” (D) x 1.7” (H) (1U)
Dimensions (Boxed) 53cm (W) x 20.5cm (D) x 6cm (H)
21” (W) x 8” (D) x 2.4” (H)
Weight Nett: 1.6kg Gross: 2.2kg
Nett: 3.5lbs Gross: 4.8lbs

 

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Autres dénominations : rbdma2, rb dma 2