BSS : DPR 402 – Compresseur 2 cannaux
BSS COMPRESSEUR/DE-ESSEUR/LIMITEUR 2 CANAUX DPR402
C’est celui qui est demandé depuis des années sur toutes les fiches techniques !
Ses qualités audio, ainsi que la souplesse de ses réglages en font un véritable standard.
Toujours utilisé en studio non fumeur –
Trés bon état
3 en stock
Input Impedance: 10k ohm balanced or unbalanced.
Input Headroom: >+20dBv.
Input CMMR: Better than -50dB 30Hz-20kHz. Typically -65dB at 1kHz.
Output level: >+20dBv into 600 ohms or greater.
Output Impedance: <1 ohm unbalanced.
Output Gain: ±20dB continuously variable.
Frequency Response: ±1dB 25Hz to 20kHz. Ultrasonic filter -3dB at 30kHz.
Noise: Equivalent input noise <-86dBv 22Hz to 22kHz
<-82dBv CCIR weighted.
Distortion: Unity Gain +10dBm output, below threshold.
THD. <0.03% 20Hz-20kHz. Typically 0.002% at 1kHz.
IMD. <0.01% SMPTE. Typically 0.003%.10dB compression.
Threshold 0dB. 1kHz, 5sec rel. Time (see note 1).
2nd Harmonic <0.15%.
3rd Harmonic <0.05%.
IMD (SMPTE) <0.25%.
Cross Talk: Better than -85dB 20Hz to 20kHz, any settings.
Threshold Range: -30dBv to 20dBv continually variable.
Ratio: Infinite, at and above twice the set frequency.
Frequency Range: 700Hz to 20kHz continuously variable (see note 3).
Threshold Range: -30dBv to 20dBv continuously variable.
Compressor Ratio: 1:1 to infinity:1 continuously variable. Over infinity available by
Barrier strip re-linking.
Maximum VCA Range: >30dB.
Attack Time: 50 microseconds to 80 milliseconds in 11 switched steps (see note
Release Time: 5 milliseconds to 5 seconds in 10 switched steps and AUTO (see
AUTO TIME Constant: A two part program dependant time constant. Attack time is
typically 200 microseconds on fast transient overdrives. Release is
typically 10 milliseconds for 63% recovery from a 10dB 4
millisecond overdrive, and 1 second for a 10dB 40 millisecond
Threshold Range: +4dBv to +20dBv continuously variable.
Attack Time: 150 microseconds, fast setting.
750 microseconds, slow setting.
Release Time: 100 milliseconds, fast setting.
500 milliseconds, slow setting.
Note 1: Harmonic distortion will increase with reduced frequency and
shorter time constants, which is inherent in this type of equipment.
Note 2: Attack times are those as measured to achieve 63% of final gain
reduction with a step signal of 8dB above threshold. Release times
are those as measured to achieve 63% recovery of open gain or
removal of a signal of 8dB above threshold.
Note 3: The frequency is that at which 3dB of gain reduction occurs for 10dB
of signal overdrive above threshold. 10dB of gain reduction will
occur at and above twice this frequency.
Mode Switch: 3 position switch to select:
Bypass Switch: Normal mode to allow simultaneous wide band de-essing,
compressing and peak limiting.
MON S.C. Switch: Wide band de-ess mode utilising compressor side chain.
Meter Input Switch: HF de-ess mode utilising compressor side chain.
Bypasses all functions of the unit at unity gain, allowing all
parameters to be adjusted and levels checked whilst ‘on air’.
Momentarily connects the control side chain to the output of the
unit to allow monitoring of control insert return.
Momentarily connects the input signal to the output level meter to
allow comparison of input and output levels prior to operating the
Metering: BELOW THRESHOLD: 5 LEDs to indicate side chain level from
18dB to 0dB ref the set threshold.
GAIN REDUCTION: 9 LEDs to indicate the amount of gain
reduction from 3dV to 27dB. Display ‘bright-up’ at 30dB of
OUTPUT: 12 LEDs to indicate output level from -24dBm to +18dBm.
Display ‘bright-up’ at +21dBm (clip).
DE-ESS: 2 LEDs to indicate normal and hard de-essing.
PEAK LIMITING: 2 LEDs to indicate normal and hard peak limiting.
Stereo Switch (Rear Panel): Couples channel 1 and channel 2 control signals for stereo
operation. Indicated on the front panel by an LED.
Rear Connections: INPUT: XLR 3-31 or equivalent (Balanced)
OUTPUT: XLR 3-32 or equivalent (Unbalanced)
ACCESS POINTS: Barrier strip, providing control and subtract side
chain insertion points including HP and LP filter sends, pre-emphasis
and de-emphasis network sends; inverse phase sends for expander
mode; and control side chain DC access point for stereo, quad etc.,
coupling and gating.
Power: Switch selectable 120V or 240V, 50/60Hz, 15VA. AC fuses on the
rear of the unit. DC fuses located inside the unit.
Mounting requirements: (Ht x W x D)
44.5mm x 483mm x 229mm
1U/1¾ » x 19 x 9″
Weight: 4.5kg (Packed)