Product Information

U 89 i
Large Diaphragm
Microphone

www.neumann.com

Georg Neumann GmbH, Berlin • Ollenhauerstr. 98 • 13403 Berlin • Germany • Tel.: +49 (30) 417724-0 • Fax: +49 (30) 417724-50
E-Mail: headoffice@neumann.com, engineering@neumann.com, catalog-info@neumann.com • Web: www.neumann.com

he U 89 is a studio microphone for universal applications. The headgrille protects adual-diaphragm capsule. A rotary switch below the headgrille selects fromfive different polar patterns.
Therefore the microphone
can be adapted easily to large
sound sources, and those thatare spread wide apart, or tosound sources to be recorded
at a greater distance.
The amplifier accepts soundpressure levels up to 134 dB
without distortion. This figure
can be increased to 140 dB. An additional rotary switch activates a filter that changes thelow frequency response either below 80 Hz
or 160 Hz.

Applications
The U 89 i is similar in appearance to theU 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. Thewide-angle polar pattern is especially useful torecord large sound sources.

Acoustic features

Features• Variable large diaphragmmicrophone• Thereby most versatile in all
recording situations• Pressure-gradient transducer
with double membrane capsule• Two-stage roll-off filter• Five directional characteristics:
omni, wide angle cardioid,cardioid, hypercardioid, figure-8• Switchable 10 dB preattenuation• Extended frequency range incomparison to U 87 Ai

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 morereflections arrive at the microphone capsule.
The acoustic information is not affected in its
tonal quality when recorded by the microphone.

U 89 iThis characteristic is achieved without resorting to corrective resonance effects.
The capsule it is elastically mounted to avoid
any structure borne noise that could interferewith its operation.

Filter and attenuation
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 theON position.
A low frequency roll-off at
80 Hz or 160 Hz can be activated with the third rotaryswitch below the headgrille.
This filter suppresses low frequency interference, yet maintains an even frequency response
for close-up sound sources, forexample, when proximity effect could adversely affect theprogram material.
A steep high-pass filter in theLIN 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.

Delivery Range
Microphone U 89 i (mt)Wooden box

Catalog No.
U 89 i ..................................................................... ni .......... 06449
U 89 i mt ............................................................. blk ....... 06450

Selection of Accessories
Battery supply, BS 48 i ............................. blk ...... 06494
Power supply, N 248 (Euro) ................ blk ...... 08537
Power supply, N 248 (US) .................... blk ...... 08538
Power supply, N 248 (UK) ................... blk ...... 08539
Auditorium hanger, MNV 87 ................ ni ......... 06804
Auditorium hanger, MNV 87 mt ........ blk ...... 06806
Elastic suspension, EA 89 A ................. ni ......... 07195
Elastic suspension, EA 89 A mt ......... blk ...... 07196
Stand mount swivel, SG 389 mt ........ blk ...... 06620
Popscreen, PS 20 a ..................................... blk ...... 08488
Windscreen, WS 89 .................................... blk ...... 07197
Microphone cable, IC 4 mt(with stand mount swivel) ....................... blk ...... 06557
A complete survey and detailed descriptions of allaccessories 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,- pianoThese 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,cardioid, hypercardioid, figure-8
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
Equivalent SPL CCIR 468-3 ................................................................................ 28 dB
Equivalent SPL DIN/IEC 651 ....................................................................... 17 dB-A
S/N ratio CCIR 468-3 .............................................................................................. 66 dB
S/N ratio DIN/IEC 651 ........................................................................................... 77 dB

Maximum SPL for THD 0.5% ...................................................................... 134 dB
Maximum SPL for THD 0.5% with preattenuation ....................... 140 dB
Maximum output voltage ................................................................................ 800 mV
Dynamic range of the microphone amplifier DIN/IEC 651 ..... 117 dB
Supply voltage .................................................................................................. 48 V ± 4 V
Current consumption ............................................................................................ 0.8 mA
Matching connector .............................................................................................. XLR 3F
Weight .............................................................................................................................. 400 g
Diameter ........................................................................................................................ 46 mm
Length .......................................................................................................................... 185 mm

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Errors excepted, subject to changes • Printed in Germany • Publ. 09/04 58157/A03