AKG C 3000 B User manual

Category
Microphones
Type
User manual
Description
This large-diaphragm condenser microphone has been designed on the
basis of experience AKG and its customers have gained worldwide over
the last decades using models such as the C 12 and C 414B. The
C 3000B uses advanced, reliable components to meet the highest pro-
fessional demands and withstand even long-time, tough handling in the
studio and on stage.
The C 3000B provides the following features:
The large-diaphragm transducer has been acoustically designed with a
cardioid polar pattern to make the microphone suitable for use both in
the recording studio and on stage.
The diaphragm is made of a plastic foil that is gold-sputtered on one side
to prevent local shorts to the back electrode even at extremely high
sound pressure levels.
A switchable preattenuation pad allows you to increase the maximum
SPL capability of your C 3000B by 10 dB for distortion-free close-in
recordings. Many mixing console input stages use small transformers
that are susceptible to overload, particularly at low frequencies. The
C 3000B’s pad prevents such overload.
A bass cut filter that is switchable on the microphone body reduces low-
end distortion due to uncontrolled rumble or wind noise even further.
Also, you can eliminate the proximity effect (occurring at working
distances of less than 4 inches) inherent in unidirectional microphones
by switching the bass cut filter in.
The filter has a 6 dB/octave slope starting at 500 Hz.
The all-metal die-cast body shields the microphone very effectively
against RF interference when using it near radio transmitters or
together with wireless microphones or other communication systems
and protects the microphone from the hardships of live use.
The built-in pop screen is ideal for vocal use.
An internal spider-type shock mount for the large-diaphragm transducer
effectively suppresses handling and cable noise.
A safety flange on the connector shaft prevents the microphone from
falling out of the spider suspension or stand adapter even when
mounted upside down.
With its high SPL capability, minimum distortion, and resistance to
extreme temperatures and high humidity, the C 3000B is a truly uni-
versal microphone.
Although the microphone capsule is shock mounted internally, you can use
the supplied H 100 “spider” suspension to reduce vibrational noise
from the stand or other sources even further. Remember to insert the
cable into one of the two grooves at the rear end of the outer ring for
strain relief. This removes mechanical pull from the connector and re-
duces vibrational noise that may be transmitted to the microphone by
the cable.
Powering
The C 3000B operates on any phantom power source to DIN 45 596 /
IEC 268-15. This standard specifies a positive voltage of 12, 24, or 48 VDC
on the two audio lines referenced to the cable shield. Alternatively, you can
operate the microphone on any DC voltage between 9 and 52 V fed to the
microphone via standard phantom power wiring.
Adding Phantom Power to Balanced Input Stages
Input transformer with center tap (floating):
5
Input transformer with no center tap (floating):
Standard values for Rv or 2 x Rv:
V
s
R
v
2 x R
v
12 V ±2 V 330 ohms 680 ohms
24 V ±2 V 680 ohms 1200 ohms
48 V ±4 V 3300 ohms 6800 ohms
In order to preserve symmetry, use 2 x Rv resistors with a maximum toler-
ance of 0.5% only.
If the amplifier inputs are single-ended (grounded) or have no input trans-
formers, wire either capacitors or optional transformers into the audio lines
to prevent any current leakage into the input stage.
Adding Phantom Power to Unbalanced Amplifier Inputs
Cleaning
To clean the metal surfaces, use methylated spirits or alcohol.
Standard Accessories
H 100 shock mount
Optional Accessories
B 18 battery power supply
MK 9/10 10-m audio cable with 3-pin XLR connectors
N 62 E AC power supply for two microphones
N 66 E AC power supply for six microphones
PF 100 studio pop filter
SA 41/1 stand adapter
ST 102 A floor stand
ST 200 heavy floor stand
W 414 external windscreen (supplied with the C 414 B-ULS)
6
Specifications
Type: 1-inch large-diaphragm pressure
gradient microphone
Polar patterns: cardioid
Sensitivity at 1000 Hz: 25 mV/Pa -32 dBV ±2 dB
Frequency range: 20 to 20,000 Hz (refer to frequency
response curve)
Electrical impedance: 200 ohms
Recommended load impedance: 1000 ohms
Bass cut filter slope: 6 dB/octave below 500 Hz
Preattenuation pad: -10 dB, switchable
Equivalent noise level
to DIN 45 405 (CCIR 468-2): 25 dB
Equivalent noise level
to DIN 45 412 (A-weighted): 14 dB-A
Signal/noise ratio re 1 Pa
(A-weighted): 80 dB*)
Max. SPL for 0.5% THD (0/-10 dB):200 / 630 Pa 140 / 150 dB SPL*)
Dynamic range: 126 dB (A-weighted)*)
Environment: - temperature: -10°C to +60°C
- (14°F to 140°F)
- relative humidity: 90% (+20°C/68°F),
85% (+60°C/140°F)
Power requirement: 9 to 52 V phantom power
to DIN 45 596/IEC 268-15
Current consumption: 2 mA
Connector pinout: 3-pin male XLR to IEC standard
Size: max. dia.: 53 mm (2.1 in.),
length: 162 mm (6.4 in.)
Net weight: 320 g (14.1 oz.)
*) Values for 48 V phantom power; reduce by 3 dB for 24 V and 6 dB for
12 V phantom power.
This product conforms to standards EN 50 082-1 and EN 60 065.
Frequency Response Curve
Polar Pattern
7
Technische Änderungen vorbehalten. Specifications subject to change without notice. Ces caractéristiques sont susceptibles de modifications.
Ci riserviamo il diritto di effettuare modifiche tecniche. Nos reservamos el derecho de introducir modificaciones técnicas. Especificações sujeitas à mudanças sem aviso prévio.
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Printed in Austria on recycled paper. 08/99/9100 U 0984
AKG Acoustics GmbH
Lemböckgasse 21–25, P.O.B. 158, A-1230 Vienna/AUSTRIA
Tel: (43 1) 86 654-0*, Fax: (43 1) 86 654-516
Internet: http://www.akg-acoustics.com
AKG Acoustics, Harman Pro GmbH
Bodenseestraße 228, D-81243 München/GERMANY
Tel: (089) 87 16-0, Fax: (089) 87 16-200
Arbiter Pro Audio
Wilberforce Road, London NW9 6AX/ENGLAND
Tel: (0181) 202 1199, Fax: (0181) 202 7076
AKG ACOUSTICS, U.S.
1449 Donelson Pike, Nashville, TN 37217, U.S.A.
Tel: (615) 360-0499, Fax: (615) 360-0275
Studer Japan Ltd.
2-43-7, Uehara, Shibuya-ku, Tokyo 151-0064/JAPAN
Tel: (813) 3465-2211, Fax: (813) 3465-2214
Erikson Pro Audio
620 McCaffrey, St-Laurent, Quebec, H4T 1N1, CANADA
Tel: (514) 738-3000, Fax: (514) 737-5069
Internet: www.jam-ind.com/eriksonpro
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AKG C 3000 B User manual

Category
Microphones
Type
User manual

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