Appendix C Klark Teknik Dn370 Geq; Notes; Using The Geq; Studio And Creative Use - Midas PRO SERIES Owner's Manual

Appendix C: Klark Teknik DN370 GEQ
This appendix contains information on the Klark Teknik DN370 GEQ unit that is
pertinent to the PRO Series.

Notes

When reading the Klark Teknik DN370 GEQ in relation to the PRO Series, take the
following into consideration:
• Constant-Q versus Symmetrical-Q: In the manual, Constant-Q is referred to as
Symmetrical-Q. There is a note in the manual to say that Symmetrical-Q is
inaccurately referred to as Constant-Q.
• For "DN370" in manual, read "GEQ".
• SPL = sound pressure level.
• Although the manual refers to a physical unit, this can still apply to the virtual GEQ
equivalent of the PRO Series. For example, the pushbuttons in the units on the
Graphic EQs screen have the same functions as the ones on the physical unit, and
the on-screen faders represent the unit's long-throw ones etc.
• The GEQ of the PRO Series has 31 bands, as compared to 30 on the DN370. The
extra band is at a frequency centre of 20Hz, and is adjusted by the leftmost fader.

Using the GEQ

This 31-band, third octave graphic equaliser provides a high degree of accuracy and
control. Graphic equalisers may be used for corrective or creative purposes, depending
upon whether they are used live (MON or FOH) or in the studio (broadcast or
recording).

Studio and creative use

In the control room, a graphic equaliser may be used to remove problem frequencies
and improve deficiencies in room acoustics. This is commonly achieved with the use of
a real time analyser (RTA). As the frequency centres of the PRO Series Control Centre
conform to ISO standards, corrections can be made by sight directly from the RTA to
the graphic.
There are many creative and corrective uses for the GEQ. For example, by using the 31
equaliser bands and the high and low pass filters you can achieve the effect of someone
speaking on the telephone. When used in conjunction with a compressor, you can
create a de-esser. The GEQ can also be used for tonal correction of instruments or
vocals.

Live use (MON)

A monitor engineer may use an RTA to detect these peaks but, more often than not,
monitor engineers have a developed sense of hearing that enables them to remove
these frequencies by ear. The GEQ's 31 bands allow a majority of feedback to be
removed from the monitors. High and low pass filters are provided that can be used to
remove high frequency feedback and bass rumble or over-excursion of bass drivers
(the GEQ on the PRO Series has no variable notch filters). It may also be undesirable to
have large amounts of bass in the on-stage monitors. In vocal monitors, bass does not
PRO Series Live Audio Systems
Owner's Manual
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