MIPRO ACT-30Hr Remote Volume Control Handheld Transmitter - Manual (Page 6)

General Tips for Improving System
Performance
1. Performer should avoid holding the microphone over or
near the antenna section as this will deteriorate
transmission efficiency. Severe deterioration if
performer directly covers up the antenna section with
both hands.
2. Many performers tend to hold the microphone by the
top grille. Unfortunately, this position seriously
degrades both the sound quality and directionality of a
microphone. Even the most expensive microphones will
have its original sound quality compromised by this
method. Grabbing a microphone by the grille will
isolate the capsule's acoustic resonance circuit and or
change the capsule resonator's frequency. This results
in an inferior performance in both frequency response
and the separation of directionality. In addition, a
palm's sound-focusing effect will tend to strengthen
resonances in certain frequencies and can cause
unwanted echo.
3. A proper technique is required for using directional
microphones because the distance between the
microphone and your mouth has a significant impact on
sensitivity and performance. There is an inverse
relationship between microphone sensitivity and the
distance from the mouth to the microphone.
Consequently, performers with a ''weaker'' sound level
cannot expect to hold the microphone too far away
from their mouth and compensate by turning up the
amplifier volume to increase the sound level as this can
easily cause echo or feedback. In contrast, performers
with a ''louder'' sound level should not hold the
microphone too close as this can easily result in
distortion by causing the amplifier system to be
overloaded.
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4. Furthermore, a large-diaphragm directional microphone
has a very distinct proximity effect. When the
microphone is close to the mouth, the bass response is
strengthened as the distance gets closer. RF, if a
performer's sound is insufficient in bass, they can hold
the microphone closer and use the proximity effect to
help compensate for the lower bass level. Conversely, if
a performer's voice is too heavy in the bass register,
increasing the distance between the microphone and
their mouth will decrease the proximity effect and
reduce the bass response, thus making their voice
become clearer and brighter.
5. It is recommended to keep the grille and sponge
windscreen clean to avoid any substance blocking the
proximity effect of the microphone.
Notes
1. Refer to actual product in the event of product
description discrepancy.
2. Frequency range and maximum deviation comply with
the regulations of different countries.
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