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Sonifex RB-MA2G Dual Microphone Amplifier with Gain Control

Sonifex RB-MA2G Dual Microphone Amplifier with Gain Control

4.344 DKK 4.478 DKK

The RB-MA2G consists of two independent low-noise microphone pre-amplifiers with front panel level controls and metering, for converting microphone level signals to line level, or for driving long lines from microphones to mixing equipment.
Model/Varenr.: SF-RB-MA2G
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Sonifex RB-MA2G Dual Microphone Amplifier with Gain Controls

 

 

The Sonifex RB-MA2G consists of two independent low-noise microphone pre-amplifiers with front panel level controls and metering, for converting microphone level signals to line level, or for driving long lines from microphones to mixing equipment.

 

All connections are on the rear panel. The microphone input is XLR-3 type and is electronically balanced. The input gains can be adjusted individually by recessed pre-set potentiometers.

 

Two front panel potentiometers give ±12dB level adjustment and a 12 segment LED meter shows the audio level for each channel.

 

The XLR-3 line output is electronically balanced and can be wired unbalanced by grounding the non-phase signal, allowing you to feed both balanced and unbalanced equipment. 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 microphone. An LED power indicator on the front panel displays the power supply connection.

 

 

 

Category: Microphone Amplifiers & Limiters.
Product Function: Amplification of two mic level signals to line level.
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:

  • Neutrik XLR connectors.
  • Mic input gain adjustment.
  • +48V phantom power.
  • High pass (rumble) filter.
  • Front panel level adjustment.
  • Front panel LED metering.



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RB-MA2G Diagram

RB-MA2G Block Diagram.

 

 

 

 

Technical Specification For RB-MA2G

Audio Specifications

 
Maximum Input Level: +4dBu
Maximum Output Level: +28dBu
Input Impedance: 2kΩ Nominal balanced
Output Impedance: <50Ω Balanced
Low Frequency Roll-Off: 125Hz @ 6dB/octave
Gain Range: Adjustable 12dB to 80dB gain
E.I.N:             -128dBu, 20kHz BW, max gain, Rs=200Ω
Distortion:                       <0.01%, +8dBu, 20Hz – 20kHz, 40dB gain, 20kHz bandwidth
Common Mode Rejection: >66dB @ 1kHz
Phantom Power: 48V
Frequency Response: 20Hz to 20kHz +0/-0.2dB
   

Connections

 
Input: 2 x XLR 3 pin female (Balanced)
Output: 2 x XLR 3 pin male (Balanced, can be unbalanced)
Mains Input: Filtered IEC, 110V-120V, or 220-240V switchable, fused, 9W maximum
Fuse Rating: Anti-surge fuse 100mA 20 x 5mm (230VAC)
Anti-surge fuse 250mA 20 x 5mm (115VAC)
   

Equipment Type

 
RB-MA2G: Dual microphone amplifier with gain
   

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): 58.5cm (W) x 22.5cm (D) x 7cm (H)
23” (W) x 8.9” (D) x 2.8” (H)
Weight:           Nett: 1.35kg Gross: 2.0kg
Nett: 3.0lbs  Gross: 4.4lbs

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