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Adjusting The Sound Control (Eq 1 To 7); Bypass; Selecting The Filter Type; Changing Filter Parameters - IMG STAGE LINE DSM-480LAN Bedienungsanleitung

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Proceed as in step 4) for a fast frequency
GB
change.
6) To exit the submenu, press the knob ESC.
7) The low pass filter can be adjusted in the
same way. For this purpose call the menu
LPF Ɓ
item
in step 2).

5.4.6 Adjusting the sound control (EQ 1 to 7)

In addition to the high pass filter and low pass fil-
ter, each output has 7 filters which can be
adjusted independently. Via the function EQ
Bypass these filters can completely be bal-
anced.
1) Select an output with its button EDIT/ MUTE
(6).
2) Use the rotary knob PM1/ ENTER to select
EQ Byp
the menu item
confirm. The present adjustment is shown.
3) Use the rotary knob PM2 to define if the
filters of this channel are to be effective
ƊEQ Bypass = Off
(
Bypass = On
). A change is effective imme-
diately.
4) To exit the submenu, press the knob ESC.
For each of the 7 filters (
following parameters may be adjusted. The
deactivation of the function described above (
Bypass = Off
) is a prerequisite for the
change of these parameters. Otherwise a note
on this subject will appear when calling one of
the following submenu items.

5.4.6.1 Bypass

This function only allows to bypass the filter
selected.
1) Select an output with its button EDIT/ MUTE
(6).
2) Use the rotary knob PM1/ ENTER to select
EQ-1
the desired filter (
the knob to confirm. The present adjustment
ƊByp=Off
is shown, e. g.
3) Use the rotary knob PM2 to define if the
selected filter is to be effective (
ƊByp=On
or bypassed (
tive immediately.
4) To exit the submenu, press the knob ESC.
With active bypass function (
possible to change the other parameters of this
filter.

5.4.6.2 Selecting the filter type

17 filter types with different characteristics are
available. To change the filter type:
1) Select an output with its button EDIT/ MUTE
(6).
2) Use the rotary knob PM1/ ENTER to select
EQ-1
the desired filter (
the knob to confirm. The present adjustment
is shown, e. g.
Out-1
Low-A
ƊByp=Off Type=Peaking_Eq
In addition to the filter type (
a symbol for its characteristic (
the top right:
3) Select the filter type with the rotary knob
PM3. A change is effective immediately.
The following filter types can be selected:
Ƅ Peaking_Eq
(Peaking Equalizer)
filter with bell characteristic with adjustable
gain / attenuation, mid-frequency and quality
factor
ƃ Hi-Shelv_1
(High Shelving Filter 1)
high frequency filter of first order with shelv-
ing characteristic
28
The level at the adjustable cut-off frequency
is 3 dB below/ above the adjusted gain / atten-
uation; the slope is 6 dB / octave.
ƃ Hi-Shelv_2
high frequency filter of second order with
shelving characteristic
The level at the adjustable cut-off frequency
is 3 dB below/ above the adjusted gain / atten-
uation; the slope is 12 dB / octave.
ƃ Hi-Shelv_Q
symmetric high frequency filter with shelving
characteristic.
The level at the adjustable cut-off frequency
is half of the adjusted gain / attenuation; the
slope depends on the adjustable quality fac-
tor.
Ƃ Lo-Shelv_1
and press the knob to
low frequency filter of first order with shelving
characteristic
The level at the adjustable cut-off frequency
is 3 dB below/ above the adjusted gain / atten-
ƊEQ
) or bypassed (
uation; the slope is 6 dB / octave.
Ƃ Lo-Shelv_2
low frequency filter of second order with
shelving characteristic
EQ-1
EQ-7
The level at the adjustable cut-off frequency
to
) the
is 3 dB below/ above the adjusted gain / atten-
EQ
uation; the slope is 12 dB / octave.
Ƃ Lo-Shelv_Q
symmetric low frequency filter with shelving
characteristic
The level at the adjustable cut-off frequency
is half of the adjusted gain / attenuation; the
slope depends on the adjustable quality fac-
tor.
Ɓ Low Pass_1
low pass filter of first order with an attenua-
tion of 3 dB at the cut-off frequency and a
slope of 6 dB / octave
EQ-7
to
) and press
Ɓ Low Pass_2
low pass filter of second order with an atten-
uation of 3 dB at the cut-off frequency and a
slope of 12 dB / octave
ƊByp=Off)
Ɓ Low Pass_Q
). A change is effec-
low pass filter with variable quality factor
ƀ HighPass_1
high pass filter of first order with an attenua-
tion of 3 dB at the cut-off frequency and a
Byp=On
) it is not
slope of 6 dB / octave
ƀ HighPass_2
high pass filter of second order with an atten-
uation of 3 dB at the cut-off frequency and a
slope of 12 dB / octave
ƀ HighPass_Q
high pass filter with variable quality factor
ƅ All Pass_1
All pass filter with constant magnitude fre-
quency response and a phase shift of 90° for
EQ-7
to
) and press
the adjustable frequency.
ƅ All Pass_2
EQ-1 Ƅ
All pass filter with constant magnitude fre-
quency response and a phase shift of 180°
for the adjustable frequency.
Peaking_Eq
)
Ƅ Band Pass
Ƅ
) is shown on
band pass filter with a passband around the
adjustable frequency. The bandwidth is
defined by the adjustable quality factor.
Ƅ Notch Fil
notch filter for narrow-band attenuation of the
level around the adjustable frequency.
The rate of the attenuation is defined by the
adjustable quality factor.
(High Shelving Filter 2)
(High Shelving Filter Q)
(Low Shelving Filter 1)
(Low Shelving Filter 2)
(Low Shelving Filter Q)
(Low Pass Filter 1)
(Low Pass Filter 2)
(Low Pass Filter Q)
(High Pass Filter 1)
(High Pass Filter 2)
(High Pass Filter Q)
(All Pass Filter 1)
(All Pass Filter 2)
(Band Pass Filter)
(Notch Filter)

5.4.6.3 Changing filter parameters

1) Select an output with its button EDIT/ MUTE
(6).
2) Use the rotary knob PM1/ ENTER to select
EQ-1
EQ-7
the desired filter (
to
the knob to confirm. The present adjustment
is shown, e. g.
Out-1
Low-A
ƊByp=Off Type=Peaking_Eq
3) Press the knob ENTER. The present filter
parameters are now shown, e. g.
Ɗ 1000Hz
+11.5dB Q=1.1
i. e. mid-frequency = 1000 Hz,
gain = 11.5 dB, filter quality factor = 1.1
Note: The availability of a parameter depends
on the filter type selected.
4) Adjust the frequency with the rotary knob
PM1/ ENTER. A change is effective immedi-
ately.
For faster frequency changes, press the
knob. The lower line of the display now
shows e. g.:
ƊEdit Frequ = 1000Hz
The frequency can now purposefully be
changed with the rotary knobs PM1 in steps
of 100 Hz, PM2 in steps of 10 Hz and PM3 in
steps of 1 Hz. To return to the higher menu
level, press the knob ESC.
5) Adjust the gain / attenuation with the rotary
knob PM2.
6) Adjust the filter quality factor with the rotary
knob PM3. A change is effective immediately.
To return to the next higher menu level, press
the knob ESC. To exit the adjusting menu, press
the knob ESC repeatedly or deselect the output
selected first.

5.4.7 Compressor (Compressor)

The compressor reduces the dynamic range and
attenuates the level above an adjustable thresh-
old. This is necessary if the dynamic range of the
audio signal is higher than allowed by the ampli-
fier system or the listening situation (e. g. in case
of background music). It is also possible to
reduce level differences (e. g. for changing
microphone distances) or to attenuate signal
peaks in order to allow a higher gain setting and
thus to obtain a higher average volume.
The compressor responds to the effective
value (RMS) of the signal. The activity of the com-
pressor is shown by the LED LIMIT of the output
indication (9). In addition, it is possible to show
the level reduction caused by the compressor
instead of the output level (
chapter 5.4.11).
1) Select an output with its button EDIT/ MUTE
(6).
2) The adjustments of the compressor are
divided into three menu items
Select the first of them with the rotary knob
PM1/ ENTER and press the knob to confirm.
The present adjustment is shown, e. g.
Out-1
Low-A
RMS Cmp
ƊBypass = Off
3) Use the rotary knob PM2 to define if the com-
pressor is to be used for this output
Bypass = Off
(
) or bypassed (
On
). A change is effective immediately.
4) To exit the submenu, press the knob ESC.
5) Use the rotary knob PM1/ ENTER to select
the next menu item and press the knob to
confirm.
The present adjustment is shown, e. g.
Out-1
Low-A
RMS Cmp
ƊThr=+11.8dBu Rto=10:1
) and press
EQ-1 Ƅ
RMS Cmp
.
Bypass =

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