Symetrix 258E, Руководство пользователя, Страница: 8 / 46

528E
6
Chapter 4 Front Panel Overview
Mic Preamp
M
IC
/L
INE
Selects between the Mic input (switch in) and
Switch Line input (switch out).
-15 dB P
AD
Inserts 15 dB pad for strong mic signals.
Switch
M
IC
G
AIN
Sets the gain of the mic preamp for best compro-
mise between signal-to-noise ratio and headroom.
C
LIP
LED Monitors inputs (mic and line) for clipping.
Illuminates 3 dB below the actual clip point.
P
HANTOM
Illuminates when 48V phantom power is present at the
microphone input connector. LED The phantom
power switch is located on the rear panel.
DE-Esser
F
REQUENCY
Sets the rolloff (cutoff) frequency of
the de-esser.
T
HRESHOLD
Sets the threshold level for the de-esser.
Signals above this level cause de-esser
action, signals below do not.
I
N
/O
UT
Switch Hard-wire bypasses the de-esser. The
de-esser is active when this switch is in.
LED Display Indicates the amount of de-esser
activity at any instant in time.
Downward Expander / Compressor
E
XP
T
HRESH
Sets the threshold level
for the downward
expander. Signalsbelow
this threshold are
downward expanded
(reduced in level).
C
OMP
T
HRESH
Sets the threshold level
for the compressor.
Signals above this
threshold cause gain
reduction in the
compressor.
C
OMP
R
ATIO
Sets the compression ratio of the compressor.
E
XP
/C
OMP
Defeats the downward expander / compressor. This is not a hard-wire bypass.
I
N
/O
UT
Switch
D
OWNWARD
Indicates the amount of downward expander activity (gain reduction) at any
E
XPANDER
instant in time.
LED Display
C
OMPRESSOR
Indicates the amount of compressor activity (gain reduction) at any instant in
LED Display time.
NORM
-15 PAD
PHANTOM
LINE
MIC
MIC GAIN(dB)
MIC PRE-AMP
CLIP
60 20
THRESHOLD FREQUENCY
OUT
IN
OM
-15
12 9 6 4 2
DE-ESS
0
3K
15
8K 800
DE-ESS (-dB)
-30
COMPRESSOR (-dB)
3 9 16 12 6 20
COMP RATIO COMP THRES EXP THRES
IN
OUT
DOWNWARD EXPANDER (-dB)
2
6 3
-10 -25
16 20 12 9
EXP/COMP
10 1 +20 0 -40 BYPASS