AKG Acoustics C 4500 B-BC manual Description, Recommended Applications, Powering

Description

This version of the C 4000 B 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 frontso 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” suspensionto 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 windscreenboth 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 sourceto

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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