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The DPR-404 is a 4 channel compressor with high frequency de-essing.
Each channel includes: Threshold control Below threshold metering Ratio control A gain reduction meter A clip LED Gain control Linking High frequency de-esser.
Attack and release time constants are automatically and continually regulated by dynamic and harmonic content of program material. The unit features electronically balanced inputs and outputs. | SHARK FBQ100
Automatic Feedback Destroyer with Integrated Microphone Preamp, Delay Line, Noise Gate and Compressor
High performance single channel Feedback Destroyer with integrated microphone preamp, delay line, noise gate and compressor
Automatically and "intelligently" locates and destroys up to 8 feedback frequencies
Narrow FBQ filters for extremely effective feedback suppression, while keeping highest sonic quality
Ultra-low noise Mic/Line input with Gain control and +48 V phantom power
Delay line with up to 2.5 seconds of delay, adjustable in meters, feet and msec
Noise gate with automatic and manual parameter settings
Automatic compressor with variable density
Subsonic filter with adjustable cut-off frequency
Balanced inputs and servo-balanced outputs with ¼'' TRS and gold-plated XLR connectors
High-quality components and exceptionally rugged construction ensure long life
Conceived and designed by BEHRINGER Germany |
GENERAL DATA
Power Supply 220 / 110V 25 VA
Dimension 434x351x44mm (1 rack unit)
Weight » 4 Kg
MEETING INTERFACE IN / OUT
Connector DB 9 female
Nominal in / out audio level 0 dBm
Input impedance 600 W / 10 KW (selectable)
Output impedance 100 W
* nominal line level: - 6 dBm
** it can vary depending on characteristics of telephone line
All measurements are intended at 1 kHz.
AUDIO PROGRAM IN / OUT
Connectors XLR, electr. balanced
Input impedance 600 W / 10K W (selectable)
Output level * - ¥ ¸ + 16 dBm
Output impedance 100 W
Noise on Receive output
2-Wire separation £ 25 dB**
4-Wire separation £ 70 dB
2-WIRE SECTION
Connector RJ11
Nominal input level - 6 dBm
Nominal output level - 6 dBm
Compensation mode Electronic, transf. decoupled
Impedance 600 W
4-WIRE SECTION
Connector Terminal block
Impedance 600 W
Nominal TX level 0 dBm
Nominal RX level 0 dBm
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The Avalon VT-737SP features a combination of TUBE preamplifiers, opto-compressor,sweep equalizer, output level and VU metering in a 2U space. PREAMPLIFIER The VT-737SP has three input selections: 1. The VT-737SP features a higher-performance microphone input transformer with +48v phantom selection. 2. Instrument DI high source input with jack located on front panel. 3. Balanced line input, discrete high-level Class A. The Class A preamplifier utilizes two cascaded, dual vacuum tube triodes configured with minimum negative feedback. A high gain switch boosts the overall gain of the preamplifier. The four high quality tubes are configured as singled ended anode coupled followers. A passive-variable high pass filter and hard-wire relay bypass completes the input signal conditioning. The phase reverse relay is available on all three inputs. OPTO-COMPRESSOR The opto-compressor features a minimum signal path design with twin Class A vacuum tube triodes for gain matching. The optical attenuator acts as a simple passive level controller. Full dynamic control from soft compression to hard- knee limiting can be achieved with threshold, ratio-compression, attack and release controls plus gain reduction selection on the large VU meter. Special spectral control including de-ess is available with the dual sweep mid EQ to side- chain switch. The EQ section can be flipped pre or post the opto-compressor via a front panel switch for alternate effects and tone shaping. Two VT-737SPs can be linked via a rear panel link cable for stereo tracking. The compressor bypass is a sealed silver relay for the most direct signal path. SWEEP-EQUALIZER AND OUTPUT LEVEL The VT-737SP equalizer utilizes 100% discrete, Class A-high-voltage transistors for optimum sonic performance. The high and low frequency bands provide the smooth characteristics of an all passive design, while the dual mid bands include variable frequency and switched Q-width selection. The enhanced range of the mid bands is extended into the high and low bands by the use of X10 frequency multipliers. The bypass switch incorporates a sealed silver relay for the most direct signal path. When the EQ to sidechain is engaged, the high-low EQ remains in the audio path for "tone enhancement“. The output level control provides a variable control of the overall signal path. The output amplifier utilizes another dual triode vacuum tube driving a 100% discrete, Class A, high-current, balanced and DC coupled low noise output amplifier. AVALON VT-737SP FEATURES Vacuum tube triode signal path, transformer balanced microphone input, high-voltage circuits for maximum headroom to +30dB, low noise -92dB, internal discrete power supply with toroidal transformer, soft-start tube life extender, stereo link for compressors, all discrete Class A equalizer with musical passive filter design, sealed silver relays for signal routing, large control knobs with professional conductive plastic potentiometers, VU meter for output level monitoring and compressor gain reduction. VT-737SP SPECIFICATIONS Circuit topology Four dual triode vacuum tubes (Sovtek 6922), high-voltage discrete Class A Gain Range Microphone: Transformer balanced 850/2500 ohm, 0dB to +58dB Instrument: Unbalanced 1 meg ohm, 0dB to+30dB Line: Balanced Class A 20k ohms, -27dB to 28dB Maximum input level and connector types Microphone26dB@25Hz, +30dB@1kHz balanced XLR Instrument+30dB unbalanced front panel jack socket Line +36dB balanced XLR Maximum output level +30dB balanced 600 ohms, DC coupled, discrete Class A Output type and gain XLR connector, output trim gain -45dB to20dB Noise 20kHz unweighted -92dB Noise microphone EIN -116dB, 22Hz to 22kHz unweighted Distortion THD, IMD 0.5% Frequency response -/2.5dB 10Hz to 120kHz input filter included Frequency response -3dB 1Hz to 200kHz line in-out VU meter and gain reduction High quality illuminated OVU =+4dB and gain reduction to -20dB High cut filter Variable 6dB per octave 30Hz to 140Hz Compressor type Optical passive attenuator incorporating twin vacuum tubes and stereo link Threshold - Ratio Threshold variable -30dB to +20dB, ratio-compression variable 1:1 to 20:1 Attack - Release Attack variable 2mS to 200mS, release variable 100mS to 5 seconds Equalizer type Discrete Class A, variable active and switched passive design Frequency bands (4) Treble - switched 10kHz, 15kHz, 20kHz, 32kHz, +/- 20dB range, shelf High mid - variable 200Hz to 2k8Hz and 2kHz to 28kHz, +/- 16dB range, hi-lo Q Low mid - variable 30Hz to 450Hz and 300Hz to 4k5Hz, +/- 16dB range, hi-lo Q Bass - switched 15Hz, 30Hz, 60Hz, 150Hz, +/- 24dB range, shelf AC power Internal toroidal 100v to 240v, 50-60Hz selectable, 75 watts maximum Dimensions 19 x 12 x 3.5 in (482 x 305 x 89mm) Weight 22lbs (10kg) Dimensions-shipping carton 21 x 18 x 8 in (533 x 457 x 203mm) Weight-packed 26lbs (11.8kg)
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Features Enhance switch to restore spectral balance of compressed signal Switchable Mode - Dual Channel or Stereo linked Above or Below Threshold LEDs Balanced XLR and Jack Inputs and Outputs Intuitive, user friendly layout Flawless performance
Innovation The ARX COMPO? is a unique compressor/limiter designed for use in any professional audio dynamics control application, packaged in a compact 1 RU chassis.The COMPO operates as two independent compressor/limiters, with 'industry standard' variable Threshold, Ratio and Output gain controls. A Stereo Link switch on the front panel lets both channels track as a stereo pair in a Master/Slave configuration. Enhance Switch The COMPO features an 'Enhance' switch, which provides frequency restoration to preserve the spectral balance of the audio signal, compensating for the sagging Low and High frequency response of compressed program material. The best way to think of it is as a 'smart' loudness control. Wide Scale metering There is comprehensive LED indication of all operating functions and status. Above or Below Threshold LEDs on each channel give you instant visual confirmation of compressor activity, as well as easy to read LED Gain Reduction meters. Balanced Inputs and Outputs On the rear panel, each channel has true differential Balanced inputs and outputs, on both XLR and TRS jack connectors. Other features include an Active/Bypass switch for each channel, and passive RFI filters on the inputs. Universal AC Power AC power range is a universal 100 to 120V or 220 to 240V AC, and is connected to the unit via a removable power lead and standard 3 pin IEC connector, with built-in fuse and voltage change switch. ARX Quality With its smooth compression, intuitive user friendly layout, high density precision circuitry, and extensive user-variable operating parameters, the ARX COMPO is the ideal installation 'set and forget' compressor, and is also equally at home in Studio, Broadcast and Sound Reinforcement environments.
Every day, ARX Audio interface products solve audio problems for thousands of people around the world.
T E C H N I C A L S P E C I F I C A T I O N S Input Impedance Balanced 20 Kohms, Unbalanced 10 Kohms Input Headroom + 22 dB CMRR >60 dB, 20 Hz-20 KHz Output Impedance Balanced 300 ohms, Unbalanced 150 ohms Output Level (Max) + 22 dB Frequency Response 20Hz to 20KHz ±0.4dB Signal to Noise ratio -85 dB Unweighted, -99 dB 'A' weighted Distortion .02% THD @ 0dB,1KHz Dynamic Range 107 dB Enhance Section Low Enhance 50 Hz, High Enhance 10 KHz Power Requirements 100/120 V AC, 220/240 V AC Weight 5 lbs/2.2 Kg Dimensions 19“W x 1?“H x 6“D, 482 x 44 x 155mm Input/OutputConnector type XLR, Balanced Jack
Front Panel Controls Channel A Active/Bypassed IN/OUT switch Threshold, Ratio and Output Gain controls Numbered marker panel for labelling compressor assigns 5 segment LED Gain Reduction display Above/Below Threshold status LEDs Enhance switch and status LED Stereo link switch and status LED Channel B controls identical to Channel A Rear Panel Connectors Balanced XLR Input and Output connectors. Balanced TRS jack Input and Output connectors. AC input connector, with voltage switch and fuse. |
Innovation
The ARX AFTERBURNER? is a unique Multi Mode compressor/limiter designed for use in any professional audio dynamics control application. Multiple Modes The Afterburner can be set up and used in three different ways: In Two channel mode, it performs as two independent compressor/limiters, with 'industry standard' variable Threshold, Ratio and Output gain. In stereo mode, our New Adaptive Stereo Link circuitry provides increased stereo imaging accuracy when linking both channels as a stereo pair. A single front panel switch puts the Afterburner into its alternative Mono mode, setting it up as a Single channel, Dual Band compressor/limiter, with separate dynamics control of both Low and High frequencies, opening up a whole new range of gain control techniques. Enhance Switch In any mode, the Afterburner features an 'Enhance' switch, which provides frequency restoration to preserve the spectral balance of the audio signal, compensating for the sagging Low and High frequency response of compressed program material. Think of it as a 'smart' loudness control. Features Switchable Modes - Stereo; Dual Channel Single band; or Single Channel Dual Band (Low and High) Low and High frequency compression in Single Channel mode 'Enhance' switch restores spectral balance of compressed signal New Hard/Soft knee compression switch New Adaptive Stereo Link circuit for accurate stereo imaging New Above/Below Threshold LEDs enable at-a-glance compression confirmation Balanced XLR and Jack Inputs and Outputs Sidechain Insert points Intuitive user-friendly layout Flawless performance New Above/Below Threshold LEDs enable at-a-glance compression confirmation New Hard or Soft knee compression option New LED metering provides accurate Level status, with separate Gain Reduction metering in easy to read 'wide scale' meters. There is also comprehensive LED indication of all operating functions and status in any mode. Balanced Inputs and Outputs On the rear panel, each channel has true differential Balanced inputs and outputs, on both XLR and TRS jack connectors. As well, each channel has a TRS jack Sidechain access insert point, for applications such as De-essing (when used with an external equalizer such as the ARX Multi Q or EQ 260).Other features include a true Hardwire bypass switch for each channel, and passive RFI filters on the inputs. Universal AC Power AC power range is a universal 100 to 120V or 220 to 240V AC, and is connected to the unit via a removable power lead and standard 3 pin IEC connector, with built-in fuse and voltage change switch. With its smooth compression, intuitive user friendly layout, high density precision circuitry, and extensive user-variable operating parameters, the unique ARX Afterburner is equally at home in Studio, Installation, Broadcast and Sound Reinforcement environments. It can provide great sounding dynamics control effects that are not available with any other device. T E C H N I C A L S P E C I F I C A T I O N S Input Impedance Balanced 20 Kohms, Unbalanced 10 Kohms Input Headroom + 22 dB CMRR >60 dB, 20 Hz-20 KHz Output Impedance Balanced 300 ohms, Unbalanced 150 ohms Output Level (Max) + 22 dB Frequency Response 20Hz to 20KHz ±0.2dB Signal to Noise ratio -93 dB Unweighted, -99 dB 'A' weighted Distortion .02% THD @ 0dB,1KHz Dynamic Range 115 dB Sidechain Insert Impedance 10 Kohm Filter Section Filter Type Phase corrected 6dB/octave Summed Filter Response ±0.2dB through crossover region Dividing Frequency 250 Hz Enhance Section Low Enhance 50 Hz, High Enhance 10 KHz Power Requirements 100/120 V AC, 220/240 V AC Weight 5 lbs/2.2 Kg Dimensions 19“W x 1?“H x 6“D, 482 x 44 x 155mm Input/OutputConnector type XLR, Balanced Jack Sidechain Insert Connector TRS Jack
Front Panel Controls Hardwire bypass IN/OUT switch Threshold, Ratio and Output Gain controls Above/Below Threshold LEDs 12 segment LED Output Level display Numbered marker panel for labelling compressor assigns 7 segment LED Gain Reduction display Enhance switch and status LED Adaptive Stereo link switch and status LED Dual/Single channel mode switch and status LEDs Rear Panel Connectors Balanced Inputs and Outputs, on both XLR and TRS jack connectors. In Single channel (Mono) mode, use Channel 1 Inputs and Outputs only Sidechain Insert TRS connector on each channel AC input connector, with voltage switch and fuse. |
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