562E
20
Specifications
The Dual Channel Expander/Gate shall provide
two independent channels of dynamic range
expansion for wide band, wide range audio
signals. The unit shall occupy one rack space
(1U).
The Expander/Gate shall incorporate
AutoWindowing™ and Window Advance™
circuitry to deliver virtually instantaneous
attack times without any audible “clicks” or
“pops”. There shall be continuously variable
controls for Threshold, Attack Time, Gate Hold
Time, and Release Time. Gate Range and
Expander Ratio shall be continuously variable
via a single front panel control.
There shall be separate, tunable high pass and
low pass filters in series within the control
sidechain. The cutoff frequencies shall be
individually adjustable via front panel controls.
There shall be an External Key input on the
rear panel and a Key Listen mode shall be
available that will monitor the control signal
either pre or post Key Filter. There shall be a
front panel control to select either External
Key, Internal Key, or Bypass mode.
Each channel shall have a four segment LED
meter that shall indicate gain reduction
amount. The meter shall have a range of 60dB.
There shall also be LED indicators that display
Architects and Engineers Specifications
Specifications
Chapter 10
Number of audio channels
Connectors
Maximum input level
Maximum output level
Input impedance
Output impedance
THD+Noise @ 1kHz
Signal/Noise
Dynamic range
Frequency response
Attack time
Attenuation
Chassis size
AC requirements
Power consumption
2
XLR and 1/4" TRS
+22 dBu
+22 dBu
>20K Balanced, >10K Unbalanced
600 ohms Balanced
.03% @ +4 dBu
94 dB
112 dB
+0, -3dBm, 10 Hz to 40 kHz
Program Dependent to
300 milliseconds
80 dB max, adjustable
1.75"H x 19"W x 4.25"D
117V ac, nominal
230V ac, nominal
18 watts, maximum
In the interest of continuous product improvement,
Symetrix, Inc. reserves the right to alter, change, or
modify these specifications without prior notice.
©
1997, Symetrix, Inc. All rights reserved.
the input signal level relative to the Expander/
Gate threshold.
Pre-filter control loop access will be available
via a 1/4" TRS female jack. This shall be wired
Tip=Return, Ring=Send, Sleeve=Ground.
The inputs shall be active balanced bridging
designs terminated with 3-pin XLR (AES/IEC
standard wiring) and 1/4” TRS connectors. The
input circuitry shall incorporate RFI filters. The
outputs shall be active servo-balanced designs
having equal source impedances and termi-
nated with 3-pin XLR (AES/IEC standard
wiring).
The inputs shall accom22 dBu signals
without distortion, and the balanced outputs
shall be capable of deli22 dBm into a
600 ohm load. Overall frequency response (+0,
-1dB) shall be 20Hz to 20kHz. THD+N shall not
be greater than 0.03%, 0dB g/r, 1kHz into a 600-
ohm load. Dynamic range shall be 110dB.
The unit shall have a built-in power supply and
operate from 117V nominal AC (105-130V) 50/
60 Hz or 230V nominal AC (207-253V) 50 Hz.
The unit shall be a Symetrix Incorporated
model 562E Windowing Expander/Gate.
