Neumann RSM 191 A Set Stereo Shotgun Microphone System

RSM 191 A Set Stereo Shotgun Microphone System description:

The RSM 191 is a stereo microphone system consisting of the microphone and the MTX 191 A matrix amplifier. It has an adjustable pick-up angle and high directivity. The microphone has two separate capsule systems, a hypercardioid element and a figure-8, both in a short shotgun. Together they generate the mid and the side signals.

The matrix amplifier controls the width of the stereo image by changing the gain of the side signal relative to the middle signal in six 3 dB steps. The output signals of the matrix amplifier are either mid-side (MS) or left/right (XY). The signals are converted through transformerless sum-and-difference circuitry. The output stage features dual (stereo) 3-pin XLR outputs. The MTX191 is capable of +48 V phantom power via an external source or internal 9-volt battery (8 hours typical). The balanced, transformerless technology permits the use of long cables between the microphone, the matrix amplifier and the following mic input of other signal processing equipment.

Features:

• Variable stereo shotgun microphone with shotgun and figure-8 patterns
• Interference/pressure-gradient transducer
• MS-stereo microphone, switchable to XY- stereophony
• Transformerless circuitry
• Switchable low frequency roll-off and switchable 10 dB preattenuation
• Set with Microphone RSM 191 A, Matrix amplifier MTX 191 A, Microphone cable KT 5, Adapter cable AC 20, Windscreen WS 191, Aluminium case included
• Battery or phantom powering
• The RSM 191 system is an ideal microphone system for: Outdoor stereophonic news coverage (ENG), even in extremely noisy surroundings; Stereo recordings for film and television where the actors are recorded simultaneously with acoustic ambiance, or an orchestra; Stereophonic motion picture sound where the width of the sound image must match the camera viewing angle; As variable stereo overhead system for drums (percussion)

Specifications:

• Acoustical operating principle: M: Pressure gradient/interference transducer, S: Pressure gradient transducer
• Directional pattern: M: Lobe-shaped, S: Figure-8
• Frequency range: 20 Hz ... 20 kHz
• Sensitivity at 1 kHz into 1 kohm: 23 mV/Pa
• Rated impedance: 50 ohms
• Rated load impedance: 1000 ohms
• Equivalent SPL CCIR 468-3: M/S 25/31 dB
• Equivalent SPL DIN/IEC 651: M/S 16/22 dB-A
• S/N ratio CCIR 468-3 M/S: 69/63 dB
• S/N ratio DIN/IEC 651 M/S: 78/72 dB
• Maximum SPL for THD 0.5%: 134 dB
• Maximum SPL for THD 0.5% with peattanuation: 144 dB
• Maximum output voltage: 2540 mV
• Supply voltage: 2 x 48 V ± 4 V
• Current consumption: 2 x 1.9 mA
• Matching connectors: 2 x XLR 3F
• Weight: 170 g
• Diameter: 30 mm
• Length: 212 mm