Electro-Voice PSX1000 Music Mixer User Manual


 
7. EQ SECTION
The mixer’s EQ section allows shaping of the audio signal within different frequency bands. Turning one of the
EQ level controls to the right enhances/amplifies the corresponding frequency range while turning them to the left
lowers/attenuates the signal of the specific frequency band. Before you begin to alter the sound, all EQ controls
should be set to their neutral position; that is: their detented, center position. Try to avoid setting the EQ controls
to extreme positions. Usually, minor changes are totally sufficient and produce the best results in the overall mix.
You should use natural reproduction as an benchmark and rely on your musically trained ear, being the best
instrument to judge the sound quality. The moderate use of the MID control is the best remedy for avoiding
acoustical feedback. In this frequency range, you should try to avoid excessive enhancement. Lowering the level
in this band will provide you with high amplification with lower likelihood of feedback.
Use the LO control according to your pleasing, to add more “punch” to the sound of a kick drum or “body” to the
vocals. Use the HI control in the same way to provide cymbals and the human voice with more treble and a more
transparent sound. The MID EQ section offers separate rotary controls for the adjustment of the level (MID) and
the frequency band (kHz) between 800 Hz and 8 kHz.
LO-HI EQ MID EQ
Adjustments in the MID range are certainly the most effective way to shape the sound. As a matter of fact,
determining the correct center frequency is not always as easy as it seems. Here is one method – amongst others
– how to quickly find the right setting of the parametric EQ for your application.
Note on how to adjust the parametric EQ:
1. Slightly lower the channel fader to avoid feedback.
2. Turn the MID rotary control all the way to the right (+15dB).
3. Play the desired sound source or talk into the microphone.
4. Meanwhile turn the frequency rotary control (kHz) slowly from left to right.
5. Quickly, you will detect the frequency range that is not to your liking or
causing feedback.
6. Leave the frequency control in this position and turn the MID control to the left until the
sound is natural or to your liking.
Enhancing a specific frequency range is a different story. In this case perform steps 1 to 4 as described above.
Set the frequency rotary control to the range you want to enhance or leave it at the position where the sound is
most satisfactory. Now you can use the MID control to determine the amount of alteration.
8. AUX/FX
The AUX/FX controls are used to adjust individual amounts of channel signals to be routed to the FX1 or the FX2
units. The split point of the “dry” signal is POST FADE or in other words: the signal path is split after the audio
signal has passed all stages of the channel module, including the volume fader. That is the reason why the fader
setting also influences the amount of the signal that is fed to the FX units. By using the AUX/FX controls, it is easy
to establish an effects mix. For example, you can assign the short reverb effect of the FX1 unit to the lead vocals
and a combined effect program – echo, hall, and chorus – via FX2 to the background vocals. To determine the
desired intensity of each effect, you should start with the controls set at their center and make individual adjustments
from there on. Also keep in mind that there are two AUX/FX1/2 send controls located within the master section
which control the total amount of the FX signals. When you begin to establish the effect mix these controls should
also be set at their center position.
In case you are not using the internal FX units and/or you want to connect external signal processing units, the
pre-mixed AUX/FX1/2 signals are outputted via the AUX1/2 send jacks. Please monitor the PEAK LEDs in the
FX1/2 channels. The indicator should only light briefly at the occurrence of high program peaks. If the indicator is
constantly lit, you should lower the send levels of those channels where the program peaks occur. For further
information, please read the paragraphs about the FX1/2 units.
INPUT/MONO
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