DPR-504
BSS
DPR-504
BSS DPR-504 4-Channel Noise Gate
This unit's 4-channel noise gating can be used independantly or as two stereo pairs.
Each channel has separate side chain key parametric filters, switchable selection between fast or program dependant (Auto) attack modes, and fully variable combined hold and release timing functions. Each gate also has switchable attenuation range, key level peak and average responding LED display and an independant gate-open marker LED.
There are selectable modes for internal or external key source, switchable key listen, stereo linking and a system IN switch. LED indication shows external key source selection, system IN status, and stereo link master/slave designation.
Inputs and outputs are electronically balanced via 3-pin XLR-type connectors, with external key insert/input on a 1/4" TRS jack.
Each channel has separate side chain key parametric filters, switchable selection between fast or program dependant (Auto) attack modes, and fully variable combined hold and release timing functions. Each gate also has switchable attenuation range, key level peak and average responding LED display and an independant gate-open marker LED.
There are selectable modes for internal or external key source, switchable key listen, stereo linking and a system IN switch. LED indication shows external key source selection, system IN status, and stereo link master/slave designation.
Inputs and outputs are electronically balanced via 3-pin XLR-type connectors, with external key insert/input on a 1/4" TRS jack.
Product Weight: 11 lbs
Dimensions: 19"W x 1.75"H x 11"D
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Manufacturer Specs
INPUT SECTION
Impedance: Balanced 12kOhm differential
Maximum input level: +20dBv
CMRR: >50dB, 20Hz to 20kHz
Connector: XLR331 or equivalent
OUTPUT SECTION
Impedance: Balanced and floating to drive 600 Ohm loads
Maximum output level: +20dBv into 600 Ohm load
Connector: 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: <-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, program dependant)
Release: Combined Hold/Release function is variable 1ms to 3 sec. Hold period tracks proportionally with Release.
Link: Stereo linkable in pairs 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: 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
Power supply: Switched 120/240V +10% 20% 50/60Hz
Impedance: Balanced 12kOhm differential
Maximum input level: +20dBv
CMRR: >50dB, 20Hz to 20kHz
Connector: XLR331 or equivalent
OUTPUT SECTION
Impedance: Balanced and floating to drive 600 Ohm loads
Maximum output level: +20dBv into 600 Ohm load
Connector: 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: <-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, program dependant)
Release: Combined Hold/Release function is variable 1ms to 3 sec. Hold period tracks proportionally with Release.
Link: Stereo linkable in pairs 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: 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
Power supply: Switched 120/240V +10% 20% 50/60Hz