E2
Operators Manual
Page 7
Front Panel Familiarisation
Input Level Meter:
These meters permanently show
the level just after the analogue to digital converter, and
are not affected by any subsequent controls.
Master Key:
Bypasses the entire channel – LED
illuminated when processing is active. All metering and
status LEDs for dim when the unit is bypassed.
Input Gain Control:
If you are applying large amounts of
cut or boost it is best to turn down the input gain to prevent
the EQ stages clipping, rather than adjusting the level
entering the unit. This will ensure that the converter is still
being used over the widest resolution (and greatest number of bits), keeping noise at
a minimum.
High Pass Filter Control:
Adjust the cut-off frequency of the high pass filter from
<10Hz (effectively off) to 5kHz.
High Pass Filter Slope Key:
Choose either a second order response (12dB per
Octave roll-off) or a steeper 4
th
order response (24dB per Octave).
EQ Bands:
Active Key:
Switch out just this band of Eq to
quickly gauge its effect.
Gain control:
Adjust the amout of cut or obbst
of the selected band of frequencies. Note the
asymmetric nature of the control – 25dB of cut
is available, and 15dB of boost.
Frequency Control:
In conjunction with the range key, select the centre frequency
of the band. In shelf mode, this sets the corner frequency of the shelf.
Range Key:
Scale the frequency range available on the frequency control with this
key. The left hand LED illuminated means multiply the values by 0.1, so the control
covers 10Hz to 200Hz. No LEDs illuminated means the range is “x 1” so the control
covers 100Hz to 2kHz. The right hand LED means multiply the values by 10,
covering the range 1kHz to 20kHz.
Shelf Key:
Bands 1 & 4 can have their response switched from a parametric (bell)
filter to a shelving response. Band 1 will become a low shelf, boosting all frequencies
below the selected frequency, and band 4 will become a high shelf, boosting all above
the selected frequency. Note that the ‘Q’ control will not have any effect when the
shelf mode is on.
‘Q’ control:
In parametric mode, this will effect the width of the filter’s response.
Turned fully anti-clockwise the bandwidth is 0.4, or 2.5 octaves (a wide gently
response). Fully clockwise, the ‘Q’ is narrowed to 25, or 0.04 octaves.
Summary of Contents for E2
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