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Neumann U89 i multi pattern condenser microphone

The Neumann U 89 I is a studio microphone for universal applications.

The Neumann U 89 I is similar in appearance to the U 87. It is of smaller size, and lighter weight. It features five instead of three directional characteristics and a higher maximum sound pressure level which make this microphone easier adaptable to different applications.

The headgrille protects a dual-diaphragm capsule. A rotary switch below the headgrille selects from five different polar patterns. Therefore the microphone can be adapted easily to large sound sources, and those that are spread wide apart, or to sound sources to be recorded at a greater distance.

The amplifier accepts sound pressure levels up to 134 dB without distortion. This figure can be increased to 140 dB. An additional rotary switch activates a filter that changes the low frequency response either below 80 Hz or 160 Hz frequency.

In addition to the usual directional polar patterns: omnidirectional, cardioid, and figure-8, we have added a hypercardioid and wide-angle cardioid characteristic. When compared to the standard cardioid pattern, the hypercardioid characteristic suppresses sound from the side more efficiently. The wide-angle polar pattern is especially useful to record large sound sources.

The microphone is addressed from the front, marked with the Neumann logo. The large diaphragm capsule has a very smooth frequency response for all polar patterns over a wide acceptance angle. The frequency response curves are flat up to 10 kHz within a pickup angle of +/- 100 degrees.

As a result the U 89 i has a very even diffuse-field response for all polar patterns. This is important in a reverberant environment when more reflections arrive at the microphone capsule. The acoustic information is not affected in its tonal quality when recorded by the microphone.

All exposed surfaces of the microphone capsule, including the diaphragms, are at ground potential. This technology makes them highly immune to electrical and atmospheric interference and contamination through microscopic dust particles.

Neumann U89 i multi pattern condenser microphone Specifications:

• Acoustical operating principle: Pressure gradient transducer

• Directional pattern: Omnidirectional, wide angle, cardioid, hypercardioid, figure-8

• Frequency range: 20 Hz – 20 kHz

• Rated impedance: 150 ohms

• Rated load impedance: 1 kohms

• Variable large diaphragm microphone

• Pressure-gradient transducer with double membrane capsule

• Five directional characteristics: omni, wide angle cardioid, cardioid, hypercardioid, figure-8

• Thereby most versatile in all recording situations

• Two-stage roll-off filter

• Switchable 10 dB pre-attenuation

• Extended frequency range in comparison to U 87 Ai

• Weight: 400 g

• Diameter: 46 mm

• Length: 185 mm