SE Electronics USB2200a, Руководство пользователя

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USB2200a Technical Manual
All sE mics come complete with a precision-built flexible shock mounting system to minimise the
effect of floor-borne vibrations reaching the microphone through the stand. In the case of the
USB2200a this shock system is pre-attached to the mic itself in the form of a ‘C’ shaped cradle. When
recording vocals at close range, you should use an external mesh pop screen to prevent low frequency
thumps caused by air expelled from the mouth on certain syllables. Your popscreen should be placed
midway between the singer’s mouth and the microphone for close-miked vocals but should not be
necessary when using the microphone to record voices more than 1 metre from the microphone
or when recording musical instruments. A typical close-miked vocal distance is 200mm where the
microphone should be set up away from hard walls and surfaces.
Care and Maintenance
Though capacitor microphones are now far more rugged than in the era of the so-called ‘classic’
models, care must still be taken with all capacitor models to avoid damp conditions, humidity or
excessive dust and cigarette smoke. Microphones brought into a warm studio from a cold vehicle,
for example, may suffer condensation on the diaphragm and circuitry, which will compromise the
performance of the microphone until it has completely dried out. It is also important not to subject
the microphone to excessive shocks, such as dropping it onto a hard surface.
Microphones may be cleaned using a damp cloth but
solvents or thinners should not be used
. It
is also important not to use contact cleaners or other aerosols close to the capsule as this may impair
operation.
Mic cables and connectors should be checked regularly for damage.
If a capacitor microphone produces intermittent noise or spluttering sounds, it is probably suffering
from condensation and should be dried out in a warm place before further use.
Do not attempt to
service a microphone yourself
as this will void the warranty and may cause serious damage. These
considerations apply to all capacitor microphones.
Pad Switch
Where a pad switch is fitted as on the USB2200a, this should only be used when the microphone
is being used to record exceptionally loud sound sources that risk overloading the microphone
preamplifier to which the microphone is connected, even when set to its minimum gain setting.
Low Cut
The Low Cut switch activates a high-pass filter that reduces the amount of low frequencies in the
output signal from the microphone. Low Cut may be used to reduce the amount of bass boost caused
by the proximity effect when working very close to the microphone or to to exclude low frequency
signals, such as traffic and floor vibrations where the signal being recorded has little or no deep bass
content.
Using Your sE USB2200a Microphone