Quad Noise Gate The DPR-504 is a 4-channel noise gate. Each channel features:
The Range switch selects between 7OdB and 2OdB gating depth to provide alternative release profiles.
The unit features electronically balanced inputs and outputs. Specifications
Impedance
Balanced 12kOhm differential
Max Input Level
+20dBv
CMRR
Better than 50dB, 20Hz to 20kHz
Connector
XLR331 or equivalent
Output Section
Balanced and floating to drive 600 Ohm loads
Max Output Level
+20dBv into 600 Ohm load
XLR332 or equivalent
Range
Switchable attenuation between 70dB and 20dB The latter may be user defined by internal links
System Performance
Frequency Response
+ 1dB, 20Hz to 20kHz Ultrasonic low pass filter 3dB at 32kHz
Noise
Measured to CCIR 4682 Zero attenuation : less than 86dBv
Maximum attenuation:
<-90dBv
Distortion
THD less than 005%, 20Hz to 20kHz
SMPTE IM
< 002%
Crosstalk
> 90dB 20Hz to 20kHz
Operating Controls
Key Filter Frequency
Variable between 30Hz and 15kHz centre
Key Filter Width
Variable between 05 and 10 octaves
Key Source
Internal or External, via rear panel ¼"TRS jack
Threshold
Variable between +20dBv and 50dBv
Attack
Audio attack switchable FAST (20µs) or AUTO (40µs 5ms, programme dependant)
Release
Combined Hold/Release function is variable 1ms to 3 sec Hold period tracks proportionally with Release
Link
Stereo linkable in paris 1/2 and 3/4 Channels 1 and 3 become masters
Metering
Key Side Chain
Simultaneous average and peak reading 12 point LED display showing 20dB range either side of threshold
Gate Open Marker
Single LED shows exact gate status and mimics response profile
Ext Key Socket
3 pole, ¼" RTS jack socket used for EXT keyin or key insert functions
General
Size
482mm x 44mm x 282mm (19" x 1.75" x 11").
Weight
5kg (11lbs) gross shipping.
Electricity Supply
Switched 120/240V +10% 20% 50/60Hz.
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