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Product Information
BCM 705
Broadcast Line
www.neumann.com
Georg Neumann GmbH • Ollenhauerstr. 98 • 13403 Berlin • Germany • Tel.: +49 (30) 41 77 24-0 • Fax: +49 (30) 41 77 24-50
E-Mail: headoffice@neumann.com, engineering@neumann.com, catalog-info@neumann.com • Web: www.neumann.com
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motion conveyed with technical perfection. This is the ideal which the Neumann microphones in the Broadcast Line have been designed to fulfill. The fine-tuning to the requirements of professional broadcast studios and the
individual, functionally optimized design* ensure that these are microphones of character.
The BCM 705 is Neumann’s first dynamic microphone. The housing and headgrille are identical to those of the BCM 104; only the green
logo indicates that this is
something new from Neumann. The principle of reduction to the essentials can be
seen in the dynamic capsule
with a hypercardioid direc-
tional characteristic, specif-
ically designed for speech
reproduction at close
range. Multi-level isolation from structureborne noise ensures operation free of interference, even in a lively studio environment.
Mechanical Features
* The design of the
microphone is a
registered design of the
Georg Neumann GmbH
in certain countries.
The microphone headgrille twists off
easily for quick cleaning. Neumann of-
fers optional, color-coded headgrilles
so that, for reasons of hygiene, each
announcer can use his or her individ-
ual headgrille. In front of the capsule, mounted on a frame holder, a
fine gauze serves as a built-in popscreen.
The microphones of the Broadcast
Line have an elastic mount against
structure-borne noise, that is compatible with standard broadcast-seg-
ment microphone arms.
Acoustic Features
The frequency response has a
light treble boost, in the region
from 2 kHz to 9 kHz, aiding the
speech intelligibility. The bass fre-
quency response is designed to
compensate for the overemphasis
of the bass caused by the proximity effect.
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BCM 705
Delivery Range
BCM 705 Microphone
Catalog No.
BC M 705 ................................................... ni ............. 08507
Selection of Accessories
Headgrille, BCK ...................................... ni ............. 08520
(incl. assortment of colored rings)
Swivel Mount, SG 5 ................................................. 08529
Popscreen, PS 15 .................................. blk .......... 08472
Popscreen, PS 20 a ............................. blk .......... 08488
Windscreen, WS 47............................ blk .......... 06826
Microphone cable, IC 3 mt ............. blk .......... 06543
The integrated Pop Screen
A pop screen not only prevents the occurrence
of plosive pop noises in vocal recordings, but
also efficiently prevents unwanted particles, from respiratory moisture, nicotine, to food
remnants, from settling on the
diaphragm.
The pop screen can be removed for cleaning without the
use of tools.
Mounting
The preferred mode of operation is to suspend
the microphones in the Broadcast Line from a
standard studio boom arm. A
thread adapter to fit different
connector threads is included.
In order to provide protection
from structure-borne noise,
both the capsule and the microphone in its mount are elastically suspended.
The optional SG 5 swivel
mount allows additional angling
of the microphone by ±90 degrees.
A complete survey and detailed descriptions of
all accessories are contained in the accessories
catalog
Meaning of color codes:
blk = black,
ni = nickel
Features
• Dynamic capsule
• Hypercardioid directional characteristic
• Characteristic, functionally optimized design
• Integrated, neutral pop protection
• Integrated elastic suspension
• Individual headgrilles for different users
• Colored rings to identify the replacement
headgrilles
• Easy removal and cleaning of microphone
headgrille (with bayonet mount)
• Mechanical compatibility with standard studio
boom arms
• Multi-level isolation from structure-borne
noise
• No power supply required
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measured in free-field conditions (IEC 60268-4) into 10 kohms rated load impedance, tolerance ±2 dB
Technical Data
Acoustical operating principle .......................... Pressure gradient transducer
Directional pattern .................................................................................... Hypercardioid
Frequency range .................................................................................... 20 Hz...20 kHz
Sensitivity at 1 kHz into 10 kohm ........................................................ 1.7 mV/Pa
Rated impedance ............................................................................................... 200 ohms
Rated load impedance ....................................................................................... 1 koh ms
Signal-to-noise ratio, CCIR1) (rel. 94 dB SPL) ............................................ 62 dB
1)
according to IEC 60268-1; CCIR-weighting acccording to CCIR 468-3, quasi peak; A-weighting according to IEC 61672-1, RMS
Errors excepted, subject to changes • Printed in Germany • Publ. 09/05 514799
Neumann is a registered trademark of the Georg Neumann GmbH in certain countries.
®
Signal-to-noise ratio, A-weighted1) (rel. 94 dB SPL) .............................. 76 dB
Equivalent noise level, CCIR1)................................................................................ 32 dB
Equivalent noise level, A-weighted1)........................................................... 18 dB-A
Weight ................................................................................................................................. 500 g
Diameter .......................................................................................................................... 64 mm
Length................................................................................................................................85mm
Height (without suspension) .......................................................................... 110 mm
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