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The BCL20 is a broadcast quality dual Compressor/Limiter with a built in De-Esser
function, designed for FM transmitter protection and disc mastering as well as PA
and studio applications. The unit may be operated as two independent channels or
linked for stereo programme processing. The BCL20 offers full control over Threshold,
Ratio, Attack, Release and Gain make up. Each channel has two high resolution
twelve segment LED bargraphs, one to display gain reduction and another which can
be switched to display input or output level. The I/O meter can be switched between
Peak or VU response. A unique feature of the BCL20 is the inclusion of control over the
detection characteristics, which can be mixed between Peak and RMS levels. This
enables the compressor to be made sensitive to high energy transients or to wider
programme modulations. The De-Ess function is activated by means of a single switch
which inserts a slew rate sensitive filter into the side chain to produce frequency conscious
compression in accordance with FM transmission or disc mastering pre-emphasis. A rear
panel jack insert point allows the connection of an external equaliser in the sidechain for other
frequency conscious processing applications. The BCL20 is equipped with high impedance
balanced inputs and transformer balanced outputs on XLRs. The output stage features a unique
Transformer Distortion Cancellation circuit, which reduces transformer distortion to negligible
levels. The BCL20 is manufactured in accordance with directives encompassed within the 'CE'
regulations particularly those concerned with RFI protection.
Main Features
Broadcast specification
Low Noise and Distortion
Dual level sensing in Stereo Mode
RMS/Peak detection mix feature
Integral De-Esser function
Ultra fast 1mS peak limiting
High resolution input/output and Gain reduction metering
Transformer balanced outputs featuring unique Distortion Cancellation circuitry
Switch status LEDs
SPECIFICATIONS
Frequency Response 20 Hz to 20 kHz +/- 0.5dB
Signal to Noise Ratio + 4 dBu Input, + 4 dBu Output -94 dB
Input Impedance 20k Ohms balanced
Output Source Impedance 20 Ohms
Output Load Impedance 600 Ohms to infinity
Maximum Input Level + 20 dBu
Maximum output Level 600 Ohms Load, 1 kHz + 20 dBu
Total Harmonic Distortion (THD)
+ 4 dBu Output,
1 kHz, 10 dB compression 0.07 %
1 kHz, by-pass 0.01 %
Intermodulation Distortion 0.01 %
Compression Ratio
Continously variable
from 2 : 1 to 20 : 1
Attack Time (Peak)
Continously variable from 0.1 to 70 millisec.
Release Time (Peak)
Continously variable from 100 millisec to 3 sec.
Attack Time (RMS)
Program dependant Typ. 12 ms for 12 dB.
Typ. 4 ms for 24 dB.
Release Time (RMS)
Program dependant
Typ. 120 ms for 12 dB
Typ. 240 ms for 24 dB
Mains power Consumption (115/220 VAC, 50-60 Hz) 6 Volts-amps
Meter Calibration 0 Vu = + 4 dBu
Maximum Gain Reduction more than 50 dB
DS Action 12 dB at 8 kHz
Input Connector XLR 3 pin balanced
Output Connector XLR 3 Pin balanced
Dimensions 483mm W x 190mm D x 44.5mm H
19“W x 7.5“D x 1.75“H
Weight 3.9kg, 8.6lbs
Shipping Weight 4.8kg, 10.6lbs
Temperature Range
Operating 0C to +50C
Storage -30C to +75198>C
Note:
In these specifications, 0 dBu is referenced to 0.775 V RMS
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Features Four Independent Compressor Channels Channels 1 and 2, 3 and 4 are stereo linkable 7 LED Gain Reduction metering Balanced XLR Inputs and Outputs Sidechain Insert points Intuitive, user friendly layout Flawless performance The sheer amount of effects and signal processors necessary for today's standards of audio production puts a great strain on the available space in equipment racks, both in the studio and on the road.So, ARX would like to introduce the ARX Quadcomp. An all-new upgrade of the classic award-winning ARX Quadcomp?, the very first four channel 1 RU compressor.You?ll notice that we haven?t strayed very far from our original design concept. The Quadcomp is still four variable ratio Compressor/ Limiters neatly housed in a compact all steel 1 RU package. However, all new low noise/low distortion circuitry, better metering plus XLR inputs and outputs put the Quadcomp in a class of its own. More Control, Less Space On the front panel, each channel has the 'industry standard' individual controls for Threshold, Compression Ratio and Output, plus a new 7 LED Gain Reduction display for accurate visual indication of the amount of gain reduction being applied to the program, and an IN/OUT hardwire bypass switch.In addition to this, each channel has a blank numbered panel to write on for easy confirmation of compressor assigns. Precision Circuitry Internally, each compressor uses Class A VCAs and true 2 pole averaging RMS/DC converters for low distortion and accuracy, plus program dependent attack and release time, which automatically determines optimum compressor response. Balanced Inputs and Outputs The rear panel has true differential Balanced XLR Inputs and Outputs for each compressor. Each compressor has a TRS jack Sidechain access insert point, for frequency sensitive compression, De-essing, etc. in conjunction with an external equalizer (such as the ARX EQ260). Compressor pairs 1 and 2, 3 and 4 also have rear panel mounted Stereo Link switches for accurate stereo tracking. When switched IN, the first channel becomes the master and controls all the functions of the second except Output gain. Universal AC Power AC power range is switchable 100 to 120V, or 220 to 240V, and is connected to the unit via a standard IEC connector, with built-in fuse and voltage switch. Whatever the application ? Channel insert, Bus insert, Master Outputs, Monitor outputs, Crossover outputs, the Quadcomp II?s unique High Density design, precision Low Noise circuitry and clean uncluttered layout make it a truly useful audio tool for all applications.
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 + 20dB CMRR >50dB, 20 Hz?20 KHz Output Impedance Balanced 300 ohms Unbalanced 150 ohms Output Level (Max) + 20 dB Frequency Response 20Hz-20KHz ±0.5dB Signal to Noise ratio -93 dB Unweighted, -98 dB ?A? weighted Distortion .015% THD @ 0dB,1KHz Dynamic Range 108 dB Attack and Release Times Program dependent Metering 7 LED display: ?1, 2, 3, 6, 12, 18, ?24 dB Sidechain Insert Impedance 10 Kohm Power Requirements 100/120 V AC or 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 Connector type Balanced XLR Output Connector type Balanced XLR Sidechain Insert Connector TRS Jack
Front Panel Controls Hardwire bypass IN/OUT switch Threshold, Ratio and Output Gain controls 7 LED Gain Reduction display Marker panel for labelling compressor assigns Stereo link status LEDs Rear Panel Connectors Input and Output balanced XLR connectors TipRingSleeve Sidechain insert connectors Channels 1 and 2, 3 and 4 Stereo link switches IEC AC mains connector with inbuilt fuse and voltage change |
The Multicom Pro-XL MDX4600 gives you 4 channels of first-class dynamic
control in a single rack space. With a multitude of new features like the
advanced program-adaptive expander gate, extensive metering plus a variety
of configuration options, the Multicom Pro-XL puts a lot of dynamic processing
power in your rack.
Features
Switchable IKA (Interactive Knee Adaptation) program-adaptive compression
circuitry combines the advantages of hard-knee and soft-knee characteristics
IRC (Interactive Ratio Control) expander/gate circuitry for virtually inaudible noise
suppression
Switchable dynamic enhancer for brilliant, lively audio even with heavy compression
IGC (Interactive Gain Control) peak limiting circuitry combines clipper and program
limiter for reliable and inaudible protection against signal peaks
Switchable low contour filter prevents "pumping" due to low-frequency dominated
compression
Stereo couple function selectable for channels 1/2 and 3/4
Ultra low-noise 4580 operational amplifiers and state-of-the-art THAT¬ VCA's
Separate 8-segment LED meters for input/output levels and gain reduction
Selectable operating level (+4 dBu/-10 dBV)
High-quality detented ALPS¬ potentiometers and illuminated switches
Servo-balanced inputs and outputs with ? in. TRS and gold-plated XLR
connectors
Manufactured under ISO9000 certified management system
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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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Interactive Reference-Class 2-Channel Expander/Gate/Compressor/ Peak Limiter with
Integrated De-Esser, Dynamic Enhancer, Tube Simulation and Low Contour Filter
Whether you?re recording, mixing or mastering, the COMPOSER PRO-XL MDX2600
gives you total dynamic control. It includes all of the features you would expect from
a reference class compressor?plus a voice-adaptive de-esser, a new dynamic
enhancer, authentic tube emulation and much more. These are some of the indispensable
tools for producing clean, consistent audio with virtually no loss in signal quality.
Features:
Switchable IKA (Interactive Knee Adaptation) program-adaptive compression circuitry
combines the advantages of hard-knee and soft-knee characteristics
Integrated de-esser with switchable male/female voice recognition removes excessive
sibilance from your vocal tracks
IGC (Interactive Gain Control) peak limiting circuitry combines clipper and program
limiter for reliable and inaudible protection against signal peaks
Switchable dynamic enhancer for brilliant, lively audio even with heavy compression
IRC (Interactive Ratio Control) expander/gate circuitry for virtually inaudible
noise suppression
Switchable tube simulation for the extra warmth and transparency of classic
tube circuitry
Automatically or manually adjustable attack and release times
Switchable low contour filter prevents "pumping" due to low-frequency
dominated compression
Stereo couple function with independent output level settings
Switchable side chain input with side chain monitor function
Ultra low-noise 4580 operational amplifiers and state-of-the-art THAT¬ VCA's
Separate 12-segment LED meters for input/output levels and gain reduction
Dedicated "traffic light" threshold and de-esser level displays
High-quality detented ALPS¬ potentiometers and illuminated switches
Servo-balanced inputs and outputs with ? in. TRS and gold-plated XLR
connectors
Relay-controlled hard bypass switch with auto bypass function in case
of power failure
Manufactured under ISO9000 certified management system
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Limmiter / leveller 2 channel, απόκριση συχνότητας 20Hz-20kHz,
4 κιλά και δυνατότητα μετατροπής των in/out σε balanced 1U. |
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