is used to compensate for signal level loss from dynamics processing. The control is
centered at 0 and with a Cut / Boost capability from –20dB to +20dB.
Bypass
A Bypass switch on each channel redirects signal to a hard-wire bypass connection that
takes the EQD 312 circuitry out of the signal path. This switch lights up when Bypass is
ON. The EQD 312 metering system continues to monitor processor activity in Bypass
mode.
Range
Each channel has a Range switch for selecting the range of control for the graphic
equalizer section’s digital EQ encoders. One of three LEDs per channel located at the
extreme right side of the face of the unit lights up when selected to indicate the current
range for the graphic equalizer’s digital encoders. A lighted Red LED indicates a range of
+/-6dB; a lighted Yellow LED indicates an available range of +/-12dB and a lighted Green
LED indicates a selected range of +12/-24dB. The selected range for a channel is applied
to all digital EQ encoders in Manual mode or when setting up a program to be stored in a
Preset position. If a set-up procedure is begun and a change in the range of control of the
encoder is desired, it is probable that any EQ encoder choices made before the alteration
in range will require resetting. Range selection for each channel is global and is applied to
all channel EQ encoders.
HI Q
Normal Q (Q=4.32) of the EQD 312 is divided into bandwidths of 1/3
rd
octave from 20Hz to
20kHz. HI Q (Q=11.54) resets the bandwidth to 1/8
th
octave. The center frequencies
remain unchanged while the effect on adjacent frequencies is less pronounced in HI Q.
Pressing the HI Q switch lights the switch and indicates HI Q is now available to be
selected. A row of 31 Red LED’s labeled HI Q can be found on the Graphic Equalizer
section between the two rows of digital encoders. These are the HI Q Active indicators,
which do not light unless a frequency has been selected for applying HI Q.
SELECTING AND SETTING HI Q
Begin by pressing the Channel A HI Q switch. This will light the Channel A HI Q switch in
the Dynamics / Master Control section. This enables HI Q select / deselect mode for
Channel A and disables Channel B HI Q switch and the Preset switch. Any HI Q Active
LED’s below any of the Channel A equalizer encoders in the Graphic Equalizer section
that have HI Q enabled will now be lit.
The Graphic EQ section digital encoders are used to select it for HI Q mode. Moving the
encoder slowly does not select the encoder for HI Q but rather allows it to be read and
updated normally. Moving the encoder quickly causes the Red HI Q Active LED beneath
the encoder to blink. Pressing the Store switch at this time latches the selected EQ
encoder into HI Q. The HI Q Active LED beneath the selected encoder stops blinking and
remains ON indicating the encoder is now in HI Q and the Store switch light goes off.
Adjusting the EQ encoder in HI Q mode results in a more focused manipulation of the
selected frequency with reduced effect on adjacent frequencies.
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Содержание EQD 312
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