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Idiomas disponibles
ACOUSTIC CONTROL
The diagrams show the connection method for the Q2031B. The GQ2015A is connected in the same way. In case
ofthe GQ1031C you will need two units for a two-channel setup.
O Maintaining Ideal Indoor Propagation Characteristics
Speaker systems that demonstrate flat responses in anechoic
noise is radiated from the speaker. While measuring the pink
rooms may have irregular responses in a concert hall due to
noise at strategic listening positions in the room using the
acoustic conditions. The Q2031B equalizer can be used to
spectrum analyzer, adjust the Q2031B
until the preferred `
minimize these irregularities.
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response is obtained.
For smoothing of the playback system response a pink noise
generator and a spectrum analyzer are needed. Connect the
POWER AMP
SPEAKER
pink noise generator to the mixing console so that the pink
PINK NOISE
MIXING
GENERATOR
CONSOLE
Q2031B
SPECTRUM
€ Ensuring Adequate Feedback Margins in Stage Monitor Systems
Depending on the room characteristics feedback can result
NOTE : Measuring instruments can only provide basic sound
in howling or ringing being generated at specific frequen-
realism. After you have completed the indoor propaga-
cies. In such cases the equalizer can be used to reduce lev-
tion and feedback compensation adjustments, make the
els at the affected frequencies and thereby to control the
final adjustments using the ultimate judge, vour trained
feedback, but a pink noise generator and a spectrum ana-
ears.
lyzer are again required.
Set the equipment up just as for an actual performance, and
connect the pink noise generator to a spare input connector
A Pink Noise Generator
of the mixing console and the spectrum analyzer to a spare
generates a uniform level of random noise throughout
output connector. After ensuring that pink noise is being prop- |
the audio spectrum. (Equal Energy per octave)
erly radiated from all PA speakers and monitor speakers,
A Spectrum Analyzer
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gradually raise the output level until it is evident at which
divides the audio spectrum into ranges and indicates
frequencies feedback will occur. Use the Q2031B to reduce — `
the sound pressure for each range.
the levels of these specific frequencies.
Proper adjustment will provide a safety margin against feed-
back when the output level is raised.
MIXING CONSOLE
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= = ~
SPECTRUM
ANALYZER
:
POWER AMP
SPEAKER
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