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PEQ 3000 User Manual
5.4.2 Hi Shelf
The difference between the shelf filters is subtle and, if you do not have time to
experiment, it is probably best to use CLASSIC because this is the best all round
filter. However, when you do have time to experiment you will find that each
of the types have their uses. The minimum harmonic types (DEEP and BRIGHT),
and in particular the bass (DEEP), can sound very natural, even with very
aggressive EQ, but the psycho-acoustic principles that they operate on do not
always work as well on sensitive multiple source or full mix material.
SOFT
BRIGHT
CLASSIC
•
•
FREQ: The circular frequency control dial adjusts the EQ band frequency
from 2 Hz to 22 kHz
• •
GAIN: There is continuous adjustment of boost and cut from + 16 dB
to - 16 dB ,with a 0 dB center
• •
SOFT: The soft treble response provides a very gentle gradient between
EQ’d and non-EQ’d frequency areas. This produces the absolute
minimum of phase shift, but does not provide much differentiation,
thus frequencies outside the area of interest are often unintentionally
EQ’d. This is best used to provide gentle shaping of sensitive or
full mix material.
• •
CLASSIC: The classic treble response provides a much steeper gradient
between EQ’d and non-EQ’d frequency areas, as made famous by Midas
consoles like the XL4. This provides better differentiation and minimal
phase shift, but there is some undershoot error, that is, when boosting
the treble, the midrange is slightly cut, and vice versa. This is the best
all round EQ and is especially effective when microphones are covering
multiple sources.
• •
BRIGHT: The bright treble response provides a slightly steeper gradient
than the classic and it is uniquely shaped to provide minimum harmonic
disruption to the EQ’d material. As for the classic EQ, this provides better
differentiation and minimal phase shift, but now the mid-range is not
changed as much. This filter is best used on single source material and is
especially good for acoustic performances.
5.4.3 Lo Shelf
WARM
DEEP
CLASSIC
•
•
FREQ: The circular frequency control dial adjusts the EQ band frequency
from 2 Hz to 22 kHz
• •
GAIN: There is continuous adjustment of boost and cut from + 16 dB
to - 16 dB, with a 0 dB center
• •
WARM: The warm bass response provides a very gentle gradient
between EQ’d and non-EQ’d frequency areas. This produces the absolute
minimum of phase shift, but does not provide much differentiation,
thus frequencies outside the area of interest are often unintentionally
EQ’d. This is best used to provide gentle shaping of sensitive or
full mix material.
• •
CLASSIC: The classic bass response provides a much steeper gradient
between EQ’d and non-EQ’d frequency areas and is modelled on the
Midas XL4. This provides better differentiation and minimal phase shift,
but there is some undershoot error, that is, when boosting the bass, the
mids are slightly cut, and vice versa. This is often desirable on bass EQ
and it is the best all round, general purpose EQ curvature.
Summary of Contents for TC ICON Series
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