Neumann U 89 i User Manual

Product Information

U89i

Large Diaphragm
Microphone

www.neumann.com

Georg Neumann GmbH • Ollenhauerstr. 98 • 13403 Berlin • Germany • Tel.: [phone] • Fax: [phone]
E-Mail: [e-mail], [e-mail], [e-mail] • Web: www.neumann.com

he U 89 is a studio microphone for uni­versal 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.

Applications

The 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.

Polar patterns

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 design of the microphone is a registered design of the Georg Neumann GmbH in certain countries.

Features

• 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 pre­attenuation

• Extended frequency range in
comparison to U 87 Ai

Acoustic features

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°.

As a result the U 89 i has a very even diffuse­field 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.

This characteristic is achieved without resort­ing to corrective resonance effects.

The capsule it is elastically mounted to avoid
any structure borne noise that could interfere
with its operation.

Filter and attenuation

U89i

Delivery Range

Microphone U 89 i (mt)
Wooden box

Catalog No.

U 8 9 i .............................................................. ni .......... 006449

U 89 i m t ...................................................... blk ....... 006450

The amplifier handles sound pressure levels
up to 134 dB without distortion.

With a self noise level of 17 dB (A-weighted)
the total dynamic range is
117 dB. Maximum sound pres­sure level is 140 dB when the
–6 dB rotary switch is in the
ON position.

A low frequency roll-off at
80 Hz or 160 Hz can be acti­vated with the third rotary
switch below the headgrille.
This filter suppresses low frequency interfer­ence, yet maintains an even frequency response
for close-up sound sources, for
example, when proximity ef­fect could adversely affect the
program material.

A steep high-pass filter in the
LIN position prevents the out­put transformer of the micro­phone from being overloaded
due to undesired subsonic frequencies.

Operational safety

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.

Selection of Accessories

Battery supply, BS 48 i ........................blk ....... 006494

Power supply, N 248 EU .................. blk ....... 008537

Power supply, N 248 US ...................blk ....... 008538

Power supply, N 248 UK .................. blk ....... 008539

Auditorium hanger, MNV 87 ........... ni .......... 006804

Auditorium hanger, MNV 87 mt ... blk ....... 006806

Elastic suspension, EA 89 A ............ ni .......... 007195

Elastic suspension, EA 89 A mt ....blk ....... 007196

Stand mount swivel, SG 389 mt ... blk ....... 006620

Popscreen, PS 20 a ................................ blk ....... 008488

Windscreen, WS 89 ............................... blk ....... 007197

Microphone cable, IC 4 mt

(with stand mount swivel) .................. blk ....... 006557

A complete survey and detailed descriptions of all
accessories are contained in the accessories
catalog.

Meaning of color codes:
blk = black, ni = nickel

Application Hints

• A microphone for universal usage

• Use as spot mic for

- wind instruments,

- strings,

- piano

These are just some of the most common applica­tions. We recommend additional experimentation
to gain maximum use from this microphone.

Technical Data

Acoustical operating principle ........................ Pressure gradient transducer

Directional pattern ............................... Omnidirectional, wide angle cardioid,

Frequency range .................................................................................. 20 Hz...20 kHz

Sensitivity at 1 kHz into 1 kohm ............................................................... 8 mV/Pa

Rated impedance .............................................................................................. 150 ohms

Rated load impedance .............................................................................. 1000 ohms

Signal-to-noise ratio, CCIR1) (rel. 94 dB SPL) ........................................... 66 dB

Signal-to-noise ratio, A-weighted1) (rel. 94 dB SPL) ............................ 77 dB

Equivalent noise level, CCIR1).............................................................................. 28 dB

1)

according to IEC 60268-1; CCIR-weighting acccording to CCIR 468-3, quasi peak; A-weighting according to IEC 61672-1, RMS 2) measured as equivalent el. input signal

cardioid, hypercardioid, figure-8

Equivalent noise level, A-weighted1)......................................................... 1 7 dB-A

Maximum SPL for THD 0.5%2)................................................................... 13 4 dB

Maximum SPL for THD 0.5% with preattenuation2).................... 14 0 d B

Maximum output voltage ................................................................................ 800 mV

Dynamic range of the microphone amplifier (A-weighted) ....... 117 dB

Supply voltage (P48, IEC 61938) ..................................................... 48 V ± 4 V

Current consumption (P48, IEC 61938) ................................................ 0.8 m A

Matching connector ................................................................................................. XLR3F

Weight .............................................................................................................................. 400 g

Dimensions ................................................................................. Ø 46 mm x 185 mm

measured in free-field conditions (IEC 60268-4), tolerance ±2 dB

Errors excepted, subject to changes • Printed in Germany • Publ. 01/08 058157/A04

Neumann is a registered trademark of the Georg Neumann GmbH in certain countries.

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