DRAWMER MXPRO 50 Dual Vocal De-Esser

The human voice is one of the most diverse signals ever encountered by engineers because it contains such large variations in level and harmonic structure. Getting the desired vocal sound can sometimes prove difficult. Setting the E.Q. to give the vocal sufficient \'definition\' and \'cut\' in the mix can cause large sibilant peaks which often lead to severe distortion. The MX50 Pro \'Vocal\' De-Esser solves these problems quickly and efficiently by reducing the level of the sibilant sounds whilst leaving the remainder of the signal unchanged. 

The MX50 is a flexible, simple to set up dual De-Esser designed to fulfil the needs of the Recording Studio, Broadcast, Theatre and Live Sound Industries. Its classic application is to overcome the problems that can arise when sibilant sounds (S\'s and T\'s) are over-emphasised by the human voice, with such other applications as \'smoothing\' a stereo mix, reducing string noise on acoustic guitars or breath noise on flutes, even refining cymbal and hi-hat sounds. Processing is achieved by adjusting just two control parameters, Frequency and De-Ess. The fully variable Frequency control operates from 800Hz to 8KHz encompassing the full sibilant range, including \'hard\' sounding harmonics and other side-effects which can be generated when treble frequencies are boosted or enhanced. This is followed by the variable De-Ess which acts as a \'more\' control giving up to 20dB of gain reduction at the selected frequency.

The MX50 Pro has two modes of operation:

Split Band de-essing: Recommended for the majority of applications, this mode splits the audio spectrum into two bands with the split point being dictated by the position of the Frequency control. Only frequencies above the split point are attenuated.

Full Band de-essing: A useful alternative where unobtrusive minimal processing is required. This mode reduces the total signal level in response to sibilant peaks in the selected frequency band.

Main Features and Controls:

Floating Threshold System: This intelligent Drawmer circuitry has a floating Threshold that adapts to the dynamics and level of the incoming material, eliminating the need for a manual Threshold control and creating more natural results.

Air function: As sibilance rarely occurs above 10KHz this feature adds back high frequency \'gloss\' in excess of 12KHz preserving upper harmonics and increasing the transparency of operation.

Frequency: This control selects the frequency band in which the de-esser operates. In Split Band mode this control also determines the split point above which gain reduction will take place. The control is continuously variable from 800Hz to 8KHz and covers the full sibilant range.

De-Ess: Adjusts the amount of gain reduction that will take place when a sibilant sound has been detected. Up to a maximum of 20dB may be applied. This control uses an intelligent Floating Threshold circuitry which removes the need for a manual De-Ess Threshold control. One of the benefits of this design approach is that during quiet passages the sibilants are held to a level which is relative to the original signal.

Split Band De-Ess: Split Band operation will only reduce the selected frequencies above the value set via the Frequency control. In most situations this mode, in conjunction with the Air function, offers the most transparent de-essing. Status LED illuminates when engaged.

Full Band De-Ess: Full Band operation will reduce the total signal level in response to signals in the selected frequency band. Status LED illuminates when engaged.

Air: The Air control enables frequencies above the sibilant band to be retained, greatly increasing transparency of the de-essing process. During normal use it is recommended to keep the Air function active for both Split Band and Full Band de-essing. Status LED illuminates when engaged.

Link: Depressing this switch configures the unit for stereo operation where the average left/right signal level is used as the Floating Threshold. In linked mode the red status LED beneath the link switch will illuminate.

De-Ess Gain Reduction Display: A nine segment LED bargraph shows how much gain reduction is being applied up to a maximum of 20dB. In Full Band mode gain reduction is applied to the whole signal, whilst in Split Band mode only frequencies above the value set on the frequency control are subject to gain reduction.

Bypass: The Bypass position routes the input signal to the output with no processing. These switches are independant of any linking and will only bypass their respective channel. Status LED illuminates when engaged.

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

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
 

Features
Unique High Density design puts SIX gates in
minimum rack space
Intuitive, 'user friendly' layout
Balanced Inputs and Outputs
Fast, low noise opto-coupler circuitry
Sidechain/Key Input points on each channel
Hardwire Bypass switch on each gate
Flawless performance in any audio environment

The sheer amount of effects and signal processors required 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, in order to give engineers more control in less space, we've created
the ARX Sixgate; Six full function noise gates neatly housed in a compact,
all steel 1 RU package, without sacrificing features or quality.
Why Six gates?
Research shows that the majority of noise gates get used on drum kits,
which means using typically 5 to 6 gate channels. Compare this to the
two or maybe 4 channels that most other units have, and you'll see the
reason for the Sixgate's success.And, by using a minimalist approach to
drum gates, the ARX Sixgate has enough gates left over for backing vocals
and other instruments.
Industry Standard controls
Front panel controls for each gate consist of the 'Industry Standard' controls
for Release, Depth and Threshold, plus Red and Green LED displays to indicate
Gate Open or Closed status, and an IN/OUT hardwire bypass switch.
In addition to this, each gate has a blank panel to write on for easy confirmation
of gate assigns. No more pieces of masking tape stuck everywhere!
Ultra Low Noise
Internally, each gate has proprietary ARX ultra low noise high-speed opto-coupler
circuitry with program dependent Attack time, which tracks the incoming signal to
automatically determine optimum gate response.
Balanced Inputs and Outputs
The rear panel features true differential Balanced Inputs and Outputs for each gate,
on insulated TRS jack connectors.Each gate channel also has Individual Key Inputs/
Sidechain access insert points which can be used either for gate control by an external
signal, or for frequency sensitive gating (when used in conjuction with an external
equalizer such as the ARX EQ260).
Universal AC Power
AC power range on the Sixgate is a universal 100 to 120V or 220 to 240V, and is
connected to the unit via a standard 3 pin IEC connector, with built-in fuse and voltage
switch.
The Sixgate's unique combination of High Density design, intuitive 'user friendly' controls,
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 + 22 dB
CMRR >60 dB, 20 Hz-20 KHz
Output Impedance
Balanced 300 ohms, Unbalanced 150 ohms
Output Level (Max) + 20 dB
Frequency Response 20Hz to 20KHz ±0.2dB
Signal to Noise Ratio
Gate Closed: -95 dB Unweighted, -105 dB 'A' weighted
Gate Open, Depth Minimum: -93.5 dB Unweighted -98dB
'A' weighted
Distortion 0 .01% THD @ 0dB,1KHz
Dynamic Range 125 dB
Attack Time Program dependent using high-speed
opto-couplers
Release Time User variable
Input and Output Connector type Balanced Jack
Sidechain Insert Connector TipRingSleeve Jack
Sidechain Insert Impedance 10 Kohm
Power Requirements 100/120 V AC, 220/240 V AC
Weight 5 lbs/2.2 Kg
Dimensions
19“Wide x 13/4“High x 6“Deep; 482 x 44 x 155mm

Front Panel Controls
Individual Release, Depth and Threshold controls
Hardwire bypass IN/OUT switch
Open/Closed gate status LED
Marker panel for labelling gate assigns
Rear Panel
Balanced Inputs and Outputs, on Balanced jack
connectors
Sidechain Insert/Key Input TipRingSleeve jack on
each channel
AC input connector, with voltage switch and fuse 

The DPR-504 is a 4-channel noise gate.

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.

The Range switch selects between 7OdB and 2OdB gating depth to
provide alternative release profiles.
The unit features electronically balanced inputs and outputs.