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Description
This version of the C 4000B has been specifically designed for use in radio
newsrooms.
This large-diaphragm condenser microphone has been designed on the
basis of experience AKG and its customers have gained worldwide over
decades using AKG’s well-known studio microphones. The C 4500 B-BC
uses advanced, reliable components to meet the highest professional
demands and withstand even long-time, tough handling in the studio.
The C 4500 B-BC provides the following features:
The diaphragm is made of a plastic foil that is gold-sputtered on one side
and prevents 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 4500 B-BC by 20 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 4500 B-
BC’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. The
filter has a 6 dB/octave slope starting at 120 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.
A dual wire-mesh grille and other design features provide effective pro-
tection against electrostatic and electromagnetic interference from the
various monitors used in advanced or automatically controlled radio
studios.
In addition to high sound level capability and minimum distortion as well as
temperature and humidity resistant construction, the microphone features
a cardioid polar pattern specifically optimized for the kind of close-up
usage typical of broadcast work.
Recommended Applications
• Announcer microphone for radio studios where ruggedness, excellent
sound, high SPL capability, low proximity effect, and maximum
resistance to electrostatic and electromagnetic interference from CRT
displays in automated studios are paramount.
• Vocal and instrument recording in studios and post production suites.
• Voiceovers and dubbing.
The microphone has its sound entry on the front so you can place it
optimally right in front of the announcer’s mouth without obstructing his/her
vision.
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 reduces vibrational noise
that may be transmitted to the microphone by the cable.
You can use the supplied W 4000 foam windscreen both as a windscreen
for outdoor recording and as an additional pop screen for vocal recording.
The wind/pop screen causes almost no change in the frequency response
of the microphone. A careful, subjective comparative listening test will be
the best way to decide whether to use the windscreen or not.
Powering
The C 4500 B-BC 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.
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