Neumann USM69 I MT

by Neumann
Verfügbarkeit: 7-10 days delivery
SKU
SEN-006976

Neumann USM 69 i Variable-Pattern Stereo Microphone (Black) 

7.093,75 € 5.675,00 €

Paket beinhaltet

  • Neumann USM 69 i Variable-Pattern Stereo Microphone (Black)
  • Wooden Box
  • Limited 2-Year Warranty

The black USM 69 i Variable-Pattern Stereo Microphone from Neumann is a microphone with two separate dual-diaphragm capsules. These are mounted vertically and rotate against each other. The directional polar patterns can be selected separately for each capsule. The capsules operate independently from each other.

The microphone consists of the amplifier section and the capsule head. The amplifier section contains two microphone amplifiers operating independently from each other. They have an extremely low self-noise. Two completely separate microphone capsules are positioned closely above each other within the capsule head. Their diaphragms are made out of gold-sputtered polyester film. The upper capsule rotates against the lower one over a range of 270°. Color markings on the lower capsule system help to identify the angle by which the upper capsule has been rotated.

When sound waves reach the microphone capsules from different directions they will generate audio signals with different intensity only, but not with time differences, since the capsules are in close proximity and the sound arrives at both capsules simultaneously. The result is an intensity stereo signal that can be summed together for excellent mono compatibility without causing interference.

The USM 69 i has two built-in rotary switches. The five polar patterns of both capsules can be selected at the microphone itself. Therefore, no special AC power-supply units or powering adapters are necessary. The two outputs attach directly to any 48V phantom-powered connectors. In addition to the usual polar patterns (omnidirectional, cardioid, and figure-8), this microphone has a hypercardioid and a wide-angle cardioid pattern. A built-in DC converter generates the required capsule-polarizing voltages.

The amplifiers feature high-output capability and extremely low self-noise. Distant sound sources, as well as very loud sound sources at close range can therefore be recorded without any problem. Each amplifier has an active filter. It effectively suppresses subsonic interference as caused by wind or structure-borne noise. At the same time, the filter prevents the output transformers from overloading through very low-frequency energy.

The microphones may also be used as completely independent mono microphones. There are many applications when it is important to have a second mono microphone as a backup, or when the outputs of microphones with different polar-response characteristics must be available simultaneously.

The outputs of the two microphone channels can be linked (cascaded). In addition to the individual directional patterns, other characteristics are available through the combination of both channels. Both microphone systems operate completely independent from each other. The second amplifier will be unaffected, even in case of a faulty ground of the supply voltage for one of the channels, or a short circuit in one of the outputs.

The microphone is reliable in mono usage, even if only one of the systems is operated and connected. Its simple and redundant circuitry provides a low failure rate. Should the DC converter ever fail, a diode circuit within the microphone ensures that both systems will remain operational. The cardioid pattern is automatically chosen. The sensitivity is reduced by 3 dB.

Switchable stereo microphones
Two pressure-gradient transducers with double-membrane capsules
MS- or XY-stereophony
Capsules rotate by 270°
Very low noise
Aperture and pick-up angles freely choosable
Directional characteristics switchable, omnidirectional, wide-angle cardioid, cardioid, hypercardioid, and figure-8
Operating Principle Pressure Gradient
Transducer Condenser
Polar Pattern Cardioid, Figure-8, Hypercardioid, Omnidirectional, Wide-Angle Cardioid
Pattern Selection Switched
Frequency Range 20 Hz to 20 kHz
Signal to Noise Ratio 70 dB CCIR
81 dB A-Weighted
Equivalent Noise Level 24 dB CCIR
13 dB A-Weighted
Maximum SPL 132 dB SPL
THD 0.5%
Impedance 150 Ohms
Load Impedance 1000 Ohms
Sensitivity 13 mV/Pa at 1 kHz into 1 kOhms
General
Output Connectors Not specified by manufacturer
Operating Current Consumption 0.7 mA
Operating Voltage 48 V ± 4 V
Length 11.54" / 293 mm
Diameter 1.89" / 48 mm
Weight 1.12 lbs / 510 g
Packaging Info
Package Weight 2.55 lb
Box Dimensions (LxWxH) 13.1 x 5.1 x 1.9"
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