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BSS Audio DPR-504 Quad Noise Gate   

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The BSS DPR-504 is a 4-channel professional noise gate which has been designed for simple and intuitive use. It incorporates modern integrated circui...Click To Read More About This Product

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OVERVIEW

Capable of producing the best results in a wide range of applications.

The BSS DPR-504 is a 4-channel professional noise gate which has been designed for simple and intuitive use. It incorporates modern integrated circuit technology for high packing density and long term reliability. Ingenious proprietary techniques are employed to make the engineers life easier without compromise to performance or versatility.

¢Four independent channels that are linkable to give either one or two stereo linked master/slave modes
¢Flexible parametric Key filter for frequency conscious gating with absolute precision. The parametric EQ approach provides a higher degree of control for accurately rejecting spurious unwanted gate triggers than similar shelving filters.

¢Key listen provides operator with the facility to hear the effect of Key side- chain EQ or other processing effect as an aid to setting up.
¢Dual metering system which indicates both average and peak responses simultaneously and gives the operator precise information regarding the signal levels around the threshold point. Separate 'gate open' marker LED, linked to gate dynamics, continually monitors interrelation between gate activity and the actual signal.
¢IN switch which allows the operator to force open the gate, in the absence of signal, to check the integrity of the signal lines, and observe set dynamics. This also functions as channel bypass.

¢Selectable 'Fast and auto' attack modes which have been optimized for accurate and transparent performance over the widest variety of program material. Self adjusting Auto mode deals cleanly with varying dynamics whilst a super fast mode is available for demanding percussion and synthesizer transients.

¢Simple to operate, combined Hold and Release control which has special audio-tapered characteristics to give subtle 'musical' envelope shaping.

¢Rear mounted electronically balanced XLR input and output connectors.

¢Rear mounted 1/4" jack socket allows access to external side-chain key input for uses such as external EQ, delay or keying by and unrelated signal.

FEATURES
  • Each channel features
  • A parametric key filter with key filter listening.
  • Simultaneous key level and threshold metering with average and peak metering.
  • A gate status LED.
  • A RELEASE/HOLD control (hold tracks proportionally with release times).
  • Attack switchable auto/fast (auto tracks signal dynamics for optimum setting).
  • Link (links two channels together).
  • Key source allows external triggers.
SPECIFICATIONS

DPR-504 Quad Noise Gate

  • Input Section
    Impedance: Balanced 12k ohm differential
    Max. Input Level: + 20dBv
    CMRR: better than 50dB, 20Hz to 20Khz
    Connector: XLR3-31 or equivalent style

    Output Section
    Impedance: Balanced and floating to drive 600 ohm loads
    Headroom: +20dBv into 600 ohm load
    Frequency: +/-1dB 20Hz to 20kHz. Ultrasonic low pass filter
    Response: -3dB at 32kHz
    Noise: Measured to CCIR 468-2
    Zero attenuation: <-86dBv
    Maximum attenuation <-90dBv
    Distortion: THD <0.05% 20Hz to 20kHz
    SMPTE IM: <0.02%
    Connector: XLR3-32 or equivalent.

    Operating Controls
    Key filter: Variable between 100Hz and 20kHz centre frequency
    Key width: Variable between 0.5 and 10 octaves
    Key source: Switchable internal or EXTernal via 1/4" RTS jack
    Threshold: Variable between +20dBv and 30dBv
    Attack: Audio attack switchable FAST (20uS) or AUTO (40uS - 5mS) program
    dependant
    Release: Combined Hold/Release function variable 1mS to 4S
    Hold period tracks proportionally with release
    Release has custom audio taper
    Range Switchable attenuation between -70dB and -20dB
    Link: Stereo linkable in pairs 1/2 and 3/4 Channels 1 and 3 become masters
    EXT Socket 3 pole 1/4" RTS jack socket to provide unbalanced access into key side chain

    Metering
    Key level: Simultaneous average and peak reading 12 point LED display showing 28dB range of Key side-chain signal
    Gate open: Single triangular LED showing exact gate status
    Mimics response profile as set by attack and release controls
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