Content | The MX30 Pro Gated/Comp/Limiter is a low cost professional quality dynamics processor. Drawing on our many years experience in professional audio we have developed a series of lower-cost Drawmer dynamic signal processors, the MX Pro range. Aimed at the musician, project studio and live performer, who is determined not to compromise on quality, but have to work to a tighter budget.
By using circuit elements drawn from existing top-of-the-line Drawmer products and by simplifying the control systems where possible, the MX Pro range is no less sophisticated than our other units, despite the price tag. As a result the inexperienced user gains the benefits of Drawmer quality and performance, combined with lower cost and simplicity of operation.
Operational control is split into three sections:- Gate, Compressor, Output:
Programme Adaptive’ Gate
Used to remove unwanted noise below a pre-set level, each channel consists of a variable Threshold Gate incorporating Drawmer’s ‘Programme Adaptive’ circuitry. Although quick and simple to operate, the gate’s auto-circuitry continually optimises such parameters as Attack, Hold, Ratio and Release, completely eliminating ‘chatter’ when the signal is fluctuating on or around Threshold. Two LEDs show when the signal is ‘above’ or ‘below’ Threshold and a push button switch allows additional control of Release time. This design approach also retains all ‘leading edge’ information making the gate ideal for ‘cleaning up’ vocals or retaining the ‘punch’ on gated drums. Switching is provided for \'Fast\' or \'Slow\' release characteristics. The \'Fast\' mode can be used for instruments with rapid decay times or for additional tightening of the gating effect. The \'Slow\' mode is more suitable for vocals and instruments with longer decay times or can be used to smooth over rough fade outs. A single LED indicates gating action.
Soft Knee ‘Auto Compressor’
The gate is followed by a variable Threshold, variable Ratio, soft knee compressor with fully automatic Attack and Release. Large transients are controlled instantly whilst small signal variations are treated gently, retaining as much ‘life’ as possible and without generating unpredictable side effects. the MX30 Pro handles all compression levels with ease and displays the amount of compression on a high resolution Gain Reduction bargraph meter.
Output
The Gain control is used to compensate for the amount of compression and brings the signal to the required output level as displayed by the output bargraph meter. A variable Threshold ‘zero overshoot’ limiter, essential for avoiding distortion when mastering to digital or speaker protection in a ‘live’ situation, adds the final polish to the signal by keeping control over signal peaks. The Limit threshold provides an absolute maximum peak level which no signal can pass. Fast transients are clipped instantly whilst more sustained peaks are dealt with by applying Gain Reduction, indicated by a single LED.
Gate Threshold:
This control sets the level below which gating takes place and may be set anywhere in the range of -70dB to +20dB. A green LED illuminates to show when the signal is above threshold (i.e. gate open) and a red LED illuminates when the signal is below Threshold (i.e. gate closed).
Release: Either a Fast or Slow auto release contour may be selected depending on the material being processed. An LED indicates when Slow release status is engaged. Percussive material with little or no reverb is generally treated using the Fast release setting, whereas with slow decays or a significant amount of added reverb will usually respond better to the Slow release setting.
Compressor Threshold: This determines the input level above which gain reduction will be applied and may be set anywhere in the range of -40dB to +20dB. Soft Knee compression takes place for signals exceeding the threshold level by up to 10dB above which level, conventional ‘ratio’ compression is applied.
Gain Reduction Bargraph Meter: A nine segment LED bargraph meter continuously monitors the gain reduction applied by the compressor over a range of 0dB to 30dB.
Ratio: Sets the final compression ratio that will be applied once the 10dB soft knee region is exceeded. The ratio may be continuously adjusted from 1.2:1 to infinity:1 allowing the possibility of true hard limiting. The higher the ratio setting the more compression takes place (eg. A ratio of 8:1 means that an 8dB increase in volume at the input will appear as a 1dB increase in volume at the output).
Stereo Link: The unit can function as two independent gated/compressor/limiters or when ‘link’ mode is engaged for stereo use Channel 1 becomes the master, automatically duplicating its parameters across to Channel 2. In this mode the same degree of gain reduction is applied to both audio channels to prevent image shifting.
Output Gain: The output level may be attenuated or amplified by up to 20dB to compensate for level changes caused by compression. This control comes directly before the Peak Limiter detector and this fact should be taken into account when setting the Peak Limiter threshold.
Peak Limit: This control sets an absolute limit that the output signal will not be permitted to exceed. The limiter is ‘zero response time’ and controls peaks without any audible distortion. For transparent ‘peak protection’ the output gain control should be set to ensure that the Peak Limiter operates only occasionally. Alternatively, the unit can be driven into heavy limiting for creative effects.
Input/Output Bargraph Meter: An eight segment LED bargraph level meter monitors the output signal level over a range of -20dB to +15dB. When Bypass is selected this meter reads input level. |
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)
| 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 |
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
|
The latest addition to the 10 Series product line, the dbx® 1074 QuadGate™, is the perfect companion to the 1066 and 1046. The 1074 offers 4 channels of gating with threshold, depth and release controls on each channel. The 1074, like the rest of the products in dbx 10 Series, is based on the legendary dbx V2 VCA and offers XLR inputs and outputs, and 1/4” side-chain input. In addition to an external key input per channel, the 1074 also has an internal filter that can be independently activated and controlled on a channel-per-channel basis. This filter allows the 1074 to not only clean up tracks, but gives you frequency selective control on each gate, to open exactly when you want it to. These features combined, make the 1074 an absolute must for those who require quad gating on applications including: Gating dry and percussive sounds such as snare drum and kick drum,gating sounds that have longer decay times such as cymbals and Pianos, gating hum or buzz from live instruments or recorded tracks or eliminating Headphone leakage into microphones. Gating instrument microphones to eliminate amplifier bleed.
From the company that has been redefining the standard of signal processing for more than 30 years, dbx® Professional Products comes a bulletproof product that caters to the scrutinizing needs of those who require the precision noise gating capabilities. Once again, the engineering staff at dbx® Professional Products have taken technology that has been over three decades in the making and have created a product that is flexible, versatile and rock solid in construction design. The 1074ʼs independent channel design with key filtering capabilities make it the perfect tool for countless applications.
- Four independent channels of gating
- Independent key filtering
- Independent Threshold and Release controls
- Differentially balanced gold-plated XLR and 1/4" inputs and outputs
- True RMS level detection
- Stereo Coupling mode
- Switchable +4dBu or -10dBv operation per channel
Input Connectors | XLR (Pin 2 and tip hot) | Input Type | Electronically balanced/unbalanced, RF filtered | Input Impedance | Balanced > 50 kOhm, unbalanced >25 kOhm | Max Input | > +22 dBu balanced or unbalanced | CMRR | 40dB: Typically >55 dB at 1 kHz | Key Input | Electronically balanced/unbalanced, RF fitered Balanced 50kOhm, unbalanced > 25 kOhm | Output Connectors | XLR (Pin 2 hot) | Output Type | Servo-balanced/unbalanced, RF filtered | Output Impedance | Balanced 60 Ohm, unbalanced 30 Ohm | Max Output | > +22 dBm balanced, > +20 dBm unbalanced | Bandwidth | 20 Hz to 20 kHz, +0/-0.5 dB | Frequency Response | 0.35 Hz to 200 kHz, +0/-3 dB | Noise | | Dynamic Range | > 115 dB, unweighted | THD+Noise | 0.008% typical at +4 dBu (1 kHz unity gain), 0.08% typical at +20 dBu (1 kHz unity gain), | Interchannel Crosstalk | | Stereo Coupling | True RMS Power Summing | Operating Voltage | 100-120 VAC 50-60 Hz or 200-240 VAC 50/60 Hz | Power Consumption | 30 Watts | Fuse | 100-120 VAC:250 mA Slow Blow, 200-240 VAC:125 mA Type T | Power Connector | IEC receptacle | Unit Weight | 6.9 lbs. | Shipping Weight | 9.3 lbs. |
| 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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