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Sonifex RB-MA2 Dual Microphone Amplifier
Vendor: Sonifex
Sonifex RB-MA2 Dual Microphone Amplifier
Two separate low-noise microphone pre-amplifiers make up the RB-MA2, which is used to drive lengthy lines from microphones to processing equipment or to convert mic level signals to line level. The rear panel houses all of the controls and connectors. The microphone inputs are electronically balanced and of the XLR-3 type. A recessed pre-set potentiometer allows you to separately control the input gain for each input, enabling you to use powered and dynamic microphones. It is possible to feed both balanced and unbalanced equipment through the electronically balanced XLR-3 line outputs, which can also be wired unbalanced by grounding the non-phase signal. Independent switches are provided for each channel to operate a high pass filter (which rolls off low frequency at 125 Hz) and supply phantom power (+48 V) to the attached microphones.
Audio Specification |
|
| Maximum Input Level: | -10dBu |
| Maximum Output Level: | +28dBu |
| Low Frequency Roll-Off: | 125Hz @ 6dB/octave |
| E.I.N.: | 130dB |
| Common Mode Rejection: | >60dB typically |
| Frequency Response: | 20Hz to 20kHz ±0.1dB (600Ω load, ref 1kHz) |
| Input Impedance: | 2kΩ nominal balanced |
| Output Impedance: | <50Ω |
| Gain Range: | Adjustable 36dB to 75dB gain (each input) |
| Distortion: | 0.01% THD @ 1kHz, ref +8dBu output |
| Phantom Power: | 48V |
Connections |
|
| Input: | 2 x XLR 3 pin female (Balanced) |
| Output: | 2 x XLR 3 pin male (Balanced, can be unbalanced) |
| Mains Input: | Filtered IEC, switchable 110-120V, or 220-240V, fused, 6W max |
| Fuse Rating: | Anti-surge fuse 100mA 20 x 5mm (230VAC) Anti-surge fuse 250mA 20 x 5mm (115VAC) |
Equipment Type |
|
| RB-MA2: | Dual microphone amplifier |
Physical Specification |
|
| Dimensions (Raw): | 28cm (W) x 10.8cm (D) x 4.2cm (H) (1U) 11” (W) x 4.3” (D) x 1.7” (H) (1U) |
| Dimensions (Boxed): | 36cm (W) x 20.5cm (D) x 6cm (H) 14.2” (W) x 8” (D) x 2.4” (H) |
| Weight: | Nett: 1.00kg Gross: 1.45kg Nett: 2.2lbs Gross: 3.2lbs |
