SPL Frontliner Modular Recording Channel - Manual (Page 21)

21
Frontliner
Control Elements
Equalizer/Tube Saturation
ON
The ON switch adds the Equalizer/Tube Saturation module to the signal path. Usually the
input signal comes from the compressor module. With the EQ PRE COMP. key you can switch
the EQ module in front of the compressor, so that the input signal for the EQ module comes
from the De-Esser module.
EQ PRE COMP.
The EQ PRE COMP. key reverses the sequence of Compressor/Limiter and Equalizer: When the
key is pressed the Equalizer operates in front of the Compressor/Limiter; when not pressed
the succession remains unchanged.
Application examples: use of the compressor module as a limiter to maintain a stable output
level. If the EQ was to be used again after limiting it could not be guaranteed that the output
level would not alter. Or reduce frequencies with the EQ to prevent too excessive reactions
within the compressor, respectively vice versa: emphasize frequencies to let the compressor
react more intensively.
The EQ PRE COMP. key only switches the equalizer module, but not the tube saturation stage.
This function can also be used if compressor and EQ are taken out of the channel strip unit as
a group. In this case the signal connected to the compressor inputs is directly routed to the EQ
inputs. The EQ PRE COMP. function can not be activated if the compressor or EQ module is is
excluded from the channel strip via EXTERNAL INPUTS and operated as a single module or if
an insert was determined via the compressor or EQ inputs. The EQ PRE COMP. key flashes, if
the function is not accessible for one of the mentioned reasons.
MHF (mid-/high filter)
The MHF control serves to set the center frequency of the semi-parametric mid/high filter. The
control range is between 680 Hz and 15 kHz, so the filter covers a broad range of 4.5 octaves
for processing of both mid and high frequencies.
MHF -/+ (cut/boost MHF)
The MHF -/+ control determines the boost, or cut of the mid/high filter; the maximum values
range up to +/- 12 dB. The filter utilizes the proportional-Q principle. In other words the band-
width (=Q) is dependent on the selected boost or cut. Higher boost or cut values narrow the
bandwidth; with lower boost or cut values the bandwidth broadens. This filter characteristic
permits a musically more sensible processing of the frequency spectrum than with constant-
Q filters: if a more thorough setting has been chosen this will lead to a precise definition of
the frequency range to be processed. This in turn minimizes influences from adjacent ranges.
This filter construction permits the complete scope, from selective removal of accentuated
frequencies through to character giving accentuations, to be effectively and quickly covered.
Recommendation on frequency settings: To find the frequency which is to be processed as
quickly and accurately as possible, firstly adjust the MHF -/+ control to the maximum posi-
tion. Subsequently the relevant frequency should be sought. Because the filter at maximum
setting works with the smallest bandwidth, the frequencies can be heard most distinctly at
this setting, making them easier to locate. Finally the desired MHF +/- setting can be applied
after the frequency is determined with MHF.
7 5 3 1 0
3 5
30 50 70 100
VU
5 3 1
VU
20 10
0 %
MIC GAIN
S-R
EDUCTION
IN
STR UMEN
T
S- DETECT
AD -OVL
13
1 4
1 5 1 6 1 8 20 2 2 24 26 28 30
33 3 6 3
9 4
2 4
5 5
2 6
1 68
INS
TR. GAIN LINE GAIN RATIO
ATTACK
LMF
MHF
LMF – / +
MHF – / + AIR BAND
TU
BE
SATURATIO
N
INSTR.
LINE IN TUBE
+15 dB
ON ON
MUTE
EQ PRE
COMP.
EQ/TUBE COMP.
EXTERNAL INPUTS
DE-ES. AUTO 48 V PAD
R e c o r d i n g C h a n n e l
Ø
MAKE-UP
RELEASE
OUTPUT
Sound Performance Lab Made in Germany
ON
0
-1
-2
-3 -4
-6
-
9
-1 1
-1 2 21
16
11
6
0
-5
-9 - 16 -22 -30
-38
-4
6
-
54
-58 1.2
1
.4
1 .7
2
.0
2.3 2.7 3.0
3
.6
5.0
1
6
∞
0
1 0
2 0
3 0
4 0 50 60
7
0
80
9
0
10
0 -20
- 13
- 7. 5
-4 .5
- 2
0 1.5
3
4
5
5. 5
0.1
0.2
0
.4
1.0
2.5 7.0 16
4
0
1
30
5 30 1
000 0.03
0 .05
0. 09
0 .15
0. 25 0.4 0.65
1
.0
1.3
1
.8
2
.0
0
0 .5
1
2
3
4
5 6 7 8
9
10 1 2 1
4 16
1 9
2
0 -12
- 10
- 5
-2 .5
0 2.5
5
7.5
10
12
-12
- 10
- 5
-2 .5
0 2.5
5
7.5
10
12
-10
-8
-6
- 4
-2
0 2
4
6
8
10
680
8 20
1 k 0
1 k 5
2 k 7 3 k 4 4 k 5
6 k 5
1
0 k
13
k
15 k
30
4 0
5
0
80
125
160 200
3
00
5 00
64 0
70 0
Model 2800
GR VU VU PPM 0 dB -10 dB
THR
ESHOLD
Frontliner
6
8 1 1 1 4 1 7 1 9 2 1 23 25 26 27 29 3
2 3
5 3
7 3
9 4
1 4
2
4 3
-20
-1 8
- 12
-9
0
3
9
10
dB 1:x dB dB
dB dB Hz
Hz %
ms s
dB dB
dB
ON
EQ PRE
COMP.
MHF
680
8
20
1
k
0
1
k
5
2
k 7
3 k 4 4
k 5
6
k
5
1
0
k
13
k
15
k
Hz
MHF – / +
-12
-
10
-
5
-2
.5
0 2.5
5
7.5
10
12
dB