Symetrix 528 - Dynamic Range, EQ, and Output Controls

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2.8 Dynamic Range Processor Controls
EXPAND THRESHOLD
Sets the level below which the downward expander's activity begins.
COMPRESS THRESHOLD
Sets the level above which the compressor/limiters' activity begins.
COMPRESSION RATIO
Sets the compressor/limiter's ratio from 1.4:1 to 20:1.
BYPASS
Enables/disables the compressor/limiter/expander.
2.9 Parametric Equalizer/Notch Filter Controls
CUT/BOOST
Adjusts the cut or boost from -3 0dB to +lSdB.
BANDWIDTH
Sets the selectivity ("Q") of the equalizer, and therefore the amount of the
spectrum affected by the CUT/BOOST control. Calibrated in octaves, from .OS to
3.3 (see Section 1.12, Paramteric Equalizer/Notch Filter).
FREQUENCY
Determines which frequency lies at the center of the bell-shaped curve that
encompasses the particular frequencies affected by this band of the equalizer.
Calibrated in Hz, the LO," "MID" and "HI" sections may be overlapped.
EQ BYPASS
Switches the parametric equalizer/notch filter into or out of the circuit path.
2.10 Output Gain Control, Metering
OUTPUT GAIN
Sets the overall gain of the 528 from a minimum of -lSdB, to OdB (unity) at top
dead cente r, to a maximum of +lSdB.
OUTPUT LEVEL
lndicates the unit's output level in volume units (VU). OVU • 1.23 volts across
600 ohms ( +4dBm).
CLIP
Illuminates when output levels are within 3dB of the onset of clipping .
GAIN REDUCTION
Indicates the gain reduction provided by either the dynamic range processor
section (compressor/limiter/expander), or by the de-esser section.
COMPRESS/DE-ESS
Switches the GAIN REDUCTION m eter to read the gain change at the dynamic
range processor's VCA, or the de-easer's VCA.
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