Content | 1968 MkII - Dual Channel Tube Compressor
Blend valves and FETs for quality compression. The 1968 MkII is a 1U Tube/FET ‘stereo bus’ compressor which by design delivers a transparent ‘open’ sound even during periods of heavy compression.
The original Drawmer 1960 used a tube stage at the front of the compressor, whilst the 1968 MkII utilisies a J-FET (Field Effect Transistor) gain reduction circuit that operates faster than an opto-isolator. The compressor uses a 12AX7 tube makeup gain amplifier where you can add, with the Output Gain control, up to 20 dB of additional gain. The need for a ratio control has been removed as the compressor operates on the soft knee principle where the onset of compression is progressive.
The 1968 MkII expands attack times to six choices: 2, 9, 15, 25, 30 and 50 ms. Release times come in three fixed times (100ms, 500 ms and 1 second) and three program-dependent choices--200 ms to 2 sec, 500 ms to 5 sec and 1 to 10 seconds--all program-dependent and automatic.
The 1968 MkII provides full sidechain access for connecting an external equalizer for vocal stressing or de-essing.
Featured on both channels is a switchable ‘BIG’ and ‘BIGGER’ mode which applies less processing to the fundamental low frequency but still disciplines the upward associated harmonics which if untamed can result in a ‘boomy’ or ‘boxy’ sound. The result - a solid bottom end with enhanced sub-bass and a smoother, wider frequency response overall. This lets the operator use more compression on an overall mix with less pumping action caused by a kick and/or bass instrument.
The outputs of Channels 1 and 2 are monitored on two yellow illuminated VU meters - with a red warning glow to signify ‘approaching clipping’. A three-position switch adjusts the meters to show either normal output level, gain reduction or VU +10dB mode, which re-scales the meter for users working at ‘hot’ output levels.
An output switch selects normal compressor output, hard-wired bypass and sidechain listen.
The key features are as follows:
- 2 Channel Tube/FET Compressor.
- 2 soft-knee compressors with variable threshold, attack, release and output gain.
- Switchable BIG and BIGGER control on each channel.
- Dual mono or true stereo link operation.
- Side chain access and side chain listen facility.
- VU metering of gain reduction and output levels.
- Switchable +10dB mode on VU re-scales the meter for users working at ‘hot’ output levels.
- VU red warning glow to signify ‘approaching clipping’.
- Balanced +4dB XLR in/outs.
Due to customer demand we have introduced new features to the 1968 MkII:
- Expanded the BIG to include BIGGER - setting the filters to 75Hz and 150Hz.
- Added internal jumpers that can be configured to remove the soft clip section.
- Added internal jumpers to make the output hotter by 6dB, if required.
- Improvement have been made to the PSU to lower the noise floor.
| Bring a more professional sound to your mix
Adding a dbx® 266xs Compressor/Limiter/Gate to your live sound rig or studio gives you more dynamic control to help create a more polished, professional sound. Having compression in your audio chain gives you the ability to smooth out uneven levels, add sustain to guitars and fatten up your drums. It also makes it easy to bring vocals to the front of your mix - adding greater clarity and making them stand out from the surrounding instruments.
dbx knows compressors...after all we invented them! The 266xs is the latest in a long line of the world's most successful compressors from the inventors of the technology. Its patented Overeasy® compression technology provides smooth and musical performance while the AutoDynamic™ attack and release controls, found only on dbx compressors, puts great sound within easy reach. The 266xs can operate in stereo or dual-mono modes, has true RMS power summing and features quality XLR and 1/4" TRS inputs and outputs. It cuts no corners on visual feedback with gain reduction metering and easy-to-read backlit switches.
Features
- Error proof operation to smooth uneven levels, add sustain to guitars, fatten drums or tighten up mixes
- New gate timing algorithms ensure the smoothest release characteristics
- Program-adaptive expander/gates
- Great sounding dynamics control for any type of program material
- Separate precision LED displays for gain reduction, compression threshold and gate threshold allow quick, accurate setup
- Stereo or dual-mono operation
- Balanced inputs and outputs on 1/4" TRS and XLR connectors
- Side Chain insert
- Classic dbx® "Auto" mode
Specifications
Input Connectors |
1/4" TRS and female XLR (pin 2 hot) |
Input Type |
Electronically balanced/unbalanced, RF filtered |
Input Impedance |
40kΩ balanced/unbalanced |
Max Input |
>+22dBu Balanced or Unbalanced |
Output Connectors |
1/4" TRS, female XLR (pin 2 hot) |
Output Type |
Impedance-balanced/unbalanced, RF filtered |
Output Impedance |
+4dBu: 100Ω balanced, 50Ω unbalanced; -10dBu: 1kΩ balanced, 500Ω unbalanced |
Max Output |
>+21dBu balanced/unbalanced into 2kΩ or greater; >+18dBm balanced/unbalanced (into 600Ω) |
Sidechain |
1/4" TRS Phone, Normalled: Ring = Output (send); tip = Input (return) |
Sidechain Impedance |
Tip = >10kΩ (Input), Ring = 2kΩ (Output) |
Sidechain Max Input Level |
Tip = >+22dBu (Input) |
Sidechain Max Output Level |
Ring = >+20dBu (Output) |
Compressor Threshold Range |
-40dBu to +20dBu |
Compressor Threshold Characteristic |
Selectable OverEasy® or hard knee |
Compressor Ratio |
1:1 to Infinity:1 |
Compressor Attack Time |
Scalable Program-Dependent AutoDynamic™ |
Compressor Release Time |
Scalable Program-Dependent AutoDynamic™ |
Expander/Gate Threshold Range |
-60dBu to +15dBu |
Expander/Gate Ratio |
1:1 to 4:1 |
Expander/Gate Attack Time |
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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 S com 4 is a compact and versatile single-rack space device that provides
four channels of high quality dynamics processing with an Expander/Gate and
Compressor/Limiter on each channel.
The four channels operate independently or in stereo pairs. Its multi-segment LED
metering displays input/output level as well as gain reduction. The Expander/Gate
section features a continuously variable Threshold control as well as a switch for
fast or slow release times.
The Compressor/Limiter section includes variable Threshold, Ratio and Output levels.
S com 4's Enhancer switch restores high frequencies that are sometimes diminished
by heavy compression. This wide-ranging combination of features makes the S com
4 an efficient and versatile audio tool for a wide variety of applications. Its clean and
quiet audio characteristics make it ideal where high sonic integrity is imperative.
FEATURES:
4 Channel Compressor/Limiter, Expander/Gate with Enhancer
Linkable in two Stereo pairs
Expander/Gate with variable Trigger control and switchable Fast/Slow Release
5 Segment LED meters for Input/Output levels and Gain Reduction on each channel
Advanced circuit design utilizing Low Noise Operational
Amplifiers and High Quality VCA's
Servo Balanced Inputs and Outputs on XLR and 1/4" connectors
SKD (Smart Knee Detector) circuit automatically switches from soft to hard knee
based on the level of Input signal applied
Individual Threshold and Ratio controls on each channel
Three-year extended warranty
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Shure DP11EQE Dynamics Processor Specification:
GENERAL:
Frequency Response: 20 to 20k Hz +/- 1.0 dB re 1 kHz
Dynamic Range: 104 dB minimum, A-weighted, 20 Hz to 20 kHz
Sampling Rate: 48 kHz
Digital-to-Analog, Analog-to-Digital Conversion: 20 bit resolution
Voltage Gain:
1 dB +/- 1dB (power off)
12 dB +/- 2 dB (input 10 dBV, output +4 dBu)
12 dB +/- 2 dB (input +4 dBu, output 10 dBv)
0 dB +/- 2 dB (equal input and output sensitivities)
Impedance:
Input: 47 kilohms +/- 20% actual
Output: 120 ohms +/- 20% actual
Input Clipping Level
+18 dBu minimum (at +4 dBu setting)
+6 dBV minimum (at 10 dBV setting)
Output Clipping Level
+18 dBu minimum (at +4 dBu setting)
+6 dBV minimum (at 10 dBV setting)
Total Harmonic Distortion
LED Signal Indicators
Signal: 40 dB
Clip: 6 dB down from input clipping
Propagation Delay from Input to Ouput
0.8 ms (all filters flat, no dynamics processing, 0 ms delay), up to 2.1 ms (all processing enabled)
Polarity
Input to output: inverting optional (default: non-inverting)
XLR: pin 2 positive with respect to pin 3
1/4-inch TRS: tip positive with respect to ring
Operating Voltage
DP11EQ: 120 Vac, 50/60 Hz, 50 mA max
DP11EQE: 230 Vac, 50/60 Hz, 25 mA max
DP11EQJ: 100 Vac, 50/60 Hz, 50 mA max
Temperature Range
Operating: 0 degrees to 60 degrees C (32 degrees to 140 degrees F)
Fuse
DP11EQ: 120 Vac. Fuse: 100 mA, 250V time delay
DP11EQE: 230 Vac. Fuse: 50 mA, 250 V time delay
DP11EQJ: 100 Vac. Fuse: 100 mA, 250 V time delay
Dimensions
219 mm x 137 mm x 44 mm (8-5/8 in x 5-3/8 in x 1-3/4 in)
Weight: 930 g (2.05 lbs)
DYNAMICS PROCESSOR
Gate and Expander:
Threshold: 72 to 1 dB, 0.5 dB resolution
Attack: 1.0 to 200 ms
Decay: 0.05 to 1 second
Gate Hold Time: 0 to 0.5 seconds
AGC Leveler
Threshold: 72 to 1 dB, 0.5 dB resolution
Attack: 0.2 to 3 seconds
Decay: 0.5 to 5 seconds
Hinge: Threshold to 1 dB, 0.5 dB resolution
Compressor and Limiter
Threshold: 72 to 1 dB, 0.5 dB resolution
Attack: 1.0 to 200 ms
Decay: 0.05 to 1 second
Knee: Hard or Soft selectable
No Overshoot Peak Limiter
Propagation delay: 1 ms
Threshold: 72 to 1 dB, 0.5 dB resolution
Attack: 0 msDecay: 100 ms
PARAMETRIC EQUALIZER
Parametric Filter Frequency Bands
Up to 9 bands, variable frequency, variable Q
Boost/Cut Range
+6 dB to 18 dB per band
Q Range
1/40-octave to 2 octave
High and Low Shelf/Cut Filters
Shelf, +6 to 18 dB per filter
Cut, 12 dB per octave nominal
DELAY
Up to 1.3 seconds, 21 microsecond resolution
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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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