he SM 69 fet and USM 69 stereo micro- phones each have two separate dual-dia- phragm capsules. These are mounted verti- cally and rotate against each other. The di- rectional polar patterns can be selected separately for each capsule. The capsules op- erate independently from each other.

Applications

The SM 69 fet and USM 69 condenser stereo microphones are studio microphones for inten- sity stereo recording. The microphones are suitable for XY and MS recordings. The con- struction of the capsules is the same in both microphones. Therefore, the acoustic features of the transducers are identical. The only dif- ference is the method of switching the polar patterns and the way the microphones are con- nected to the system.

Construction

The microphone consists of the amplifier sec- tion and the capsule head. The amplifier sec- tion contains two microphone amplifiers op- erating 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 up- per 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 cap- sules from different directions they will gene- rate audio signals with different intensity only, but not with time differences, since the cap- sules are in close proximity and the sound ar- rives at both capsules simultaneously. The re- sult is an intensity stereo signal that can be summed together for excellent mono compa- tibility without causing interference.

Features

• Switchable stereo microphones

• Aperture and pick-up angles

• Two pressure-gradient

freely choosable

 

transducers with double

• Directional characteristics

membrane capsules

reproducably switchable,

• MS- or XY-stereophony

omni, wide angle cardioid,

cardioid, hypercardioid,

• Capsules rotary by 270°

figure-8

• Very low noise

 

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Neumann.Berlin USM 69 i manual Applications, Construction, Features
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USM 69 i specifications

The Neumann.Berlin USM 69 i is a versatile and innovative microphone that embodies cutting-edge audio technology and design, making it a favorite among recording professionals and sound engineers. Renowned for its exceptional sound quality and versatility, the USM 69 i is particularly well-suited for vocals, instruments, and various recording applications.

One of the standout features of the USM 69 i is its dual-capsule design, which allows for interchangeable pickup patterns. This microphone offers cardioid, omni-directional, and figure-8 patterns, enabling users to tailor their sound capture to suit different recording environments and requirements. This flexibility is crucial for achieving optimal audio quality across a range of sources.

The microphone employs advanced transformerless circuitry, which contributes to a transparent sound with minimal distortion. This technology ensures that audio signals are captured accurately, preserving the natural characteristics of the source material. Additionally, the low self-noise level of the USM 69 i is a significant advantage, allowing for detailed recordings even in quiet settings.

The build quality of the USM 69 i reflects Neumann's commitment to durability and reliability. Constructed from high-quality materials, the microphone is designed to withstand the rigors of studio and live performances alike. Its robust design ensures that it remains a dependable tool for professionals in the audio industry.

In terms of frequency response, the USM 69 i exhibits a wide and even range that captures both the low-end warmth and high-end clarity necessary for professional recordings. This characteristic allows it to shine with various voice types and instrument tones, making it a go-to choice for musicians and vocalists.

Moreover, the microphone includes a selectable low-cut filter, which helps reduce unwanted low-frequency noise and plosives, further enhancing the clarity of recordings. The inclusion of a pad switch allows for handling high sound pressure levels without distortion, making it versatile for loud sound sources.

Overall, the Neumann.Berlin USM 69 i is an exemplary microphone that combines advanced technologies, high-quality construction, and versatile features. It stands as a testament to Neumann's legacy of excellence in audio engineering and continues to be a preferred choice for professionals seeking superior sound capture in a variety of recording situations. Its innovative design and unmatched performance make it a standout instrument in the world of audio recording.
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