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- FAST – Fast Attack (750us), Fast Release (130ms)
- MF – Medium Attack (2.25ms), Fast Release (130ms)
- MED – Medium Attack (2.25ms), Medium Release (400ms)
- MS – Medium Attack (4ms), Slow Release (725ms)
- SLOW – Slow Attack (10ms), Slow Release (1S)
- AUTO – Medium Attack (5ms), Dual Decay Release (T1 500ms, T2 1s)The LINK switch allows the compressor to be linked to another 535 compressor module via a sidechain control voltage. In link mode, the compressor generating the greater sidechain voltage (resulting in higher amounts of compression) will control the compression of both audio signal paths to maintain proper stereo center image while compressing. Note: it is advisable to always audition the unlinked sound as well, to decide if the benefit of a constant stereo center image is worth the potential trade-off of reduced left / right independence in the stereo field.
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SIDECHAIN HPF
- The S/C HPF switch allows the user to insert a 12dB/octave 150Hz high-pass filter in the compressor sidechain. When this filter is engaged, the compressor will be considerably less responsive to information below 150Hz. For example: if used on a drum kit, the low end of the kick drum would have less proportional effect on the compression than a snare drum or cymbals, since a significant portion of the kick drum’s dynamic energy is focused below 150Hz.
LEVEL AND GAIN REDUCTION METERING
- These two LED meters provide accurate representations of both the output level of the compressor and the amount of gain reduction being applied to the input signal.
| The product that started it all for Empirical Labs. Born of founder Dave Derr’s love of classic compressors like the 1176, LA-2A and Gain Brain (among others), the Distressor incorporates his favorite sonic characteristics of these, along with other unique and interesting features that have made it a staple for audio engineers all over the world. With over 28,000 units in the field, it’s safe to say that the Distressor is one of the best selling high end compressors of all time… if not THE best selling. A prominent recording engineer recently wagered that there probably was not a top 40 record made in the last five years that didn’t have at least one Distressor on it.
Besides providing a wide range of control and a unique feature set, the Distressor offers a warm, vintage sound by using a custom designed gain control circuit. This “warmth” or “vintage sound” has become a major issue in the last few decades, as the super clear and linear digital technology does next to nothing to soften “harsh” sounds, nor emphasize the bass frequencies in music sources. Conversely, older analog tape, vinyl records and tube equipment could not be prevented from coloring the sound, often to the frustration of recording engineers. However, many people now realize that this coloring can be extremely pleasant and musical. Digital technology is often referred to as “cold” and “brittle” among other terms (although we prefer “unforgiving”).
Unique Compression Curves
All eight of the Distressor’s curves are unique and distinctive, from the 1:1 mode that simply warms up signal with low order harmonics without intentional compression, to the “Nuke” setting – a brick wall limiting curve that shines on live drum room mics. Each curve has its own personality and several actually use different circuitry, and are effectively different compressors. Most exceptional is the 10:1 “Opto” ratio which uses separate detector circuitry to emulate the oldest (and valued) “light controlled” devices, such as the LA-2A.
Distortion (Color) Modes
Another large part of the Distressor’s personality and power derive from three modes that color the signal, even without compression. These extended audio modes were designed to allow emulation of some very old and expensive vintage compressors & limiters, and let the Distressor deliver a classic “knee” sound all its own by providing user programmable, warm harmonic distortion. In addition to the basic distortion mode, Distort 2 emphasizes tube-like 2nd order harmonics, while in Distort 3 setting the distortion becomes dominated by 3rd harmonics more closely resembling tape. Two HP filters – one in the audio path, one in the detector path – are also available to help with low frequencies that can cause pumping and breathing.
British Mode
The concept of British Mode came from an unusual setting on the classic UREI LN1176 limiter. The unit was designed to have only four ratios, each ratio being engaged by selecting one of four buttons. However, as early as 1980 (or before), renegade recording engineers, always on the lookout for something a little more “over-the-top”, found that you could make all four buttons stay in if you pressed them just right. What resulted was a very aggressive sound that had some elements of the unit’s 20:1 ratio, but with an unusual knee and new envelope shape. Somewhere along the line, someone called it “British Mode”, and the name stuck.
The EL8-X has the advantage of being able to selectively apply this aggressive characteristic – not just to the new “British” ratio (1:1) – to any of the ratios, simply by engaging the dedicated “British Mode” switch.
The British Mode and Image Link options are only available on the EL8-X.
Image Link
The original Distressor stereo link function used a summing and phase detection method, which allowed slight stereo image shifting. Although frequently desirable for its phase correction, and its “thickening” on open room mics and other stereo sources, this approach can sometimes be a problem on stereo program material where the producer/engineers want to maintain absolute left/right balance at all times. With the new “Stereo Image Link” option, the EL8-X now has three link options – the original “phase” link, the new Image Link and the combination of the two, phase and image linking – something never before offered on any compressors or limiters.
- Frequency Response – 2 Hz to 160 kHz in clean audio mode (+0, -3 dB). Response is shaped in distortion modes (Dist 2, Dist 3).
- Dynamic Range – 110 dB from max. output to min. output in 1:1 mode. Greater than 100 dB signal to noise in distort 3 mode.
- Distortion – ranges between .02% and 20% depending on distortion mode and release times set on front panel.
- I/O – DC Coupled input and outputs.
- Time Constants – Attack range 50uS – 50mS. Release range .05 sec to 3.5 seconds, normal modes and up to 20 seconds in 10:1 opto mode. Time constants are dependent on ratio.
- Power Consumption – 15 Watts Max.
- Metal Chassis – single height 1.75″ high, 10″ deep, 19″ wide.
- Shipping info – 12.1 lbs mono. Mono box dimensions 22.5″ x 18.5″ x 3 1/4″.
| Rupert Neve Designs Portico 542 500 Series Tape FX Standard
FEATURES
- Add depth and character to your sound
- Control the mix of pre and post tape signals
- Send signals through "True Tape" circuitry
- Silk circuit, reduces negative feedback, adding harmonic content as needed
- Red Silk accentuates the saturation in the mid and high frequencies
- Use soft clip to tame overly transient material like drums
- Provides +/- 12dB adjustment of level on incoming signal levels
TECHNICAL SPECIFICATION
Rupert Neve Designs Portico 542 500 Series Tape FX
- Line Amp Specifications (Measurements with tape circuit disengaged)
- Noise: Measured at Main Output, un-weighted, 20Hz-22kHz, Input Terminated 40 Ohms.
- Unity Gain Better than -100dBu
- Frequency Response
- Measured at +10dBu, trim at unity.
- Main Output +/- 0.25dB from 5Hz to 60Khz -2dB @ 120KHz
- Maximum Output Level 23.25dBu
- Total Harmonic Distortion and Noise:
- @ 1kHz, +20dBu output level Better than 0.0025% @ 20Hz, +20dBu output level 0.07% Typical (2nd and 3rd harmonic)
- Tape FX Specifications
- Noise:
- Measured at Main Output, un-weighted, 20Hz-22kHz, Input Terminated 40 Ohms.
- Saturation @ minimum Better than -100dBu Saturation @ maximum Better than -100dBu
- Frequency Response:
- 15 IPS, Input @ -0 dBu -3dBu @ 28kHz Saturation @ minimum 0dBu @ 10Hz +5dBu Peak @ 60Hz
- Saturation @ maximum -3dBu @ 20kHz -3dBu @ 12.5Hz +2.4dBu Peak @ 60Hz
- 30 IPS, Input @ -0 dBu -3dBu @ 120kHz Saturation @ minimum -3dBu @ 10Hz +3.15dBu Peak @ 125Hz
- Saturation @ maximum -3dBu @ 100kHz -3dBu @ 12.5Hz
- +1.3dBu Peak @ 110Hz
- Total Harmonic Distortion and Noise
- Refer to sweeps on page10 15 IPS, Input @ -0 dBu 0.4% @ 3kHz to 1% @ 175Hz typical
- Saturation @ minimum Greater than 1% below 175Hz typical
- Saturation @ maximum 1% at 6kHz typical 0.3% @ 1kHz to 3% @ 50Hz typical
- 30 IPS, Input @ -0 dBu 1% at 1kHz typical
- Saturation @ minimum 0.6% @ 400Hz 5% @ 20Hz typical
- Saturation @ maximum 1.5% @ 20kHz to 0.4% @ 1kHz typical 0.4% @ 1kHz to 2 %@ 50Hz typical
- Power requirements:
- Supplied by 500 series rack with 110-125 mA @ +/- 16V DC
| This item is in excellent working condition and barely used.
The ZHA-4 splits a single stereo headphone output into four separate powered 1/8” headphone jacks, each with their own volume and mute control. Perfect for bands, podcasts, productions, and more.
Two AA batteries provide hours of portable power. For longer sessions, connect the USB-C port to a portable battery or plug directly into the wall.
What’s in the Box?
- ZHA-4 Handy Headphone Amplifier
- AA Batteries (x2)
- Stereo Mini Audio Cable (19” / 50cm)
- Quick Guide
Please Note: The item displayed in the images may not be the actual item you receive. | As with ELI’s other signal processors, the Lil FrEQ Equalizer takes a somewhat unique approach to its job. Instead of daisy chaining several equalizers and frequency processors, we combined most of the sound sculpting tools an engineer needs into a compact single rack space box, while still offering the highest performance of any design in its class.
Eight Sections of Processing
There are eight sections of processing – what other EQ offers that? Even better – in addition to a master bypass, each of the Lil FrEQ’s sections features its own dedicated bypass switch, letting you instantly A/B the effect of each section as you adjust and fine-tune them.
HIGH PASS – The High Pass section is a really easy to use sharp filter that cuts all content below one of eight preset frequencies from 30-330 Hz. This filter is very steep and has a special shape that prevents frequencies from thinning out just above the cutoff point. The corner frequency is selected using up/down buttons, and indicated by LEDs that glow softly when the section is bypassed, and brightly when the section is engaged.
HIGH & LOW SHELVING – These two knobs function similarly to the familiar “bass and treble” tone controls found on many consumer audio playback systems; however, these are designed to a much higher performance standard, providing exceptionally smooth and musical boost and cut on the high and low frequencies.
PARAMETRIC EQ – The Lil FrEQ has four sections of fully parametric EQ (LF, Lo Mid, Hi Mid and HF), with each section featuring individual gain, bandwidth (Q) and frequency controls. It may be the cleanest parametric EQ section ever produced, operating below .0007% THD (Total Harmonic Distortion) even at extremely high audio levels. Try finding those specs anywhere else!
DS (DYNAMIC EQ) – The DS section provides the highest performance, easiest to use, and possibly most natural sounding “De-esser” ever built. This powerful tool combines tunable filters with a compressor-like circuit that can help contain and control excessive high frequency content such as sibilants or other sharp transients, especially in the absence of other lower frequency content. It can also function as a one of a kind soft knee High Frequency limiter, which is one of the main things responsible for the Lil FrEQ becoming the go-to vocal EQ for engineers everywhere. It has been used on many acclaimed albums and major live performances all over the world, becoming the “go to” EQ for key tracks like lead vocals, snares, and bass. There are now dozens of hit record vocals that were processed thru the Lil FrEQ.
Frequency Response: 5 Hz to 140 kHz on transformerless inputs and outputs. Transformer output 10Hz to 110 kHz.
Dynamic Range: 120 dB from maximum output (.1% clipping) to minimum output. Greater than 110 dB signal to noise.
Distortion: Ranges between .00056% and .005% depending on mode and settings. DS section has THD < .005%.
I/O: DC coupled inputs and outputs and one transformer coupled output.
Dynamic Time Constraints: Attack is approximately .5 ms. Release .04 sec fixed internally.
Power Consumption: 15 Watts Max.
Metal Chassis: single height 1.75″ high, 10″ deep, 19″ wide. | The vintage EQ tones you know & love.
The 551 is the only equalizer for the 500 Series actually designed by Rupert Neve. Featuring 3 bands of EQ inspired by Mr. Neve’s most prized vintage designs, along with custom-wound inductors, transformers and class-A gain blocks, the 551 brings the thick, powerful lows and sweet highs of Rupert’s classics to the 500-Series format.
The “Best-Of” EQ
The 551’s 3-band, custom-tapped inductor EQ was inspired by our favorite elements of Rupert’s vintage EQ designs. The low frequency band is designed to produce a creamy, resonant bass response similar to a vintage 1064 – but unlike the vintage modules, the LF band on the 551 can be used as either a shelf or a peak filter, adding punch, dimension, and control to your low end.
The midrange band is based on that of the 1073, ideal for sweetening vocals and instruments while bringing them forward in a mix, and its proportional “Q” response makes it well-suited for minimizing problematic frequencies. The high frequency band is a hybrid vintage / modern design, blending inductor circuitry with capacitor-based topologies to achieve vintage tones with enhanced control. The High Pass filter is a 12dB/octave design with a fixed 80Hz frequency, and can be used in tandem with the low frequency EQ to add low-end presence without clouding the source material.
As with Rupert’s most prized classic designs, each EQ section uses low-feedback, class-A discrete electronics to prevent low-level artifacts and harshness from detracting from the tonal shaping. However, this new circuit is a decidedly modern design with updated techniques and components that were simply not available 50 years ago, and is definitely not a “clone”.
What Are Inductors?
Inductors are wires wound around a coil that provide a form of frequency-dependant resistance. When they saturate, they bring out beautifully musical harmonics that give your tracks the smooth, polished sound that has made Rupert’s consoles and equipment so desirable for over fifty years. This is what makes them different from capacitor-based EQ designs, which do a great job at surgical equalization. But inductors provide the tone.
While it is certainly possible to create a functioning EQ using off-the-shelf inductors, we choose to use our own custom inductors for the 551. This attention to detail in controlling variables such as the winding and core materials in relation to the surrounding circuitry allows the 551 to capture the vitality and personality of Rupert’s classic designs.
NOISE
- Measured at Main Output, un-weighted, 22Hz-22kHz, source impedance 40 Ohm balanced.
- Better than -102 dBV
FREQUENCY RESPONSE
Main output, no load: +/- 0.1 dBu from 20 Hz to 31.5 kHz, -1 dB @ 120 kHz
MAXIMUM OUTPUT LEVEL
23.25 dBu
TOTAL HARMONIC DISTORTION AND NOISE
- @ 1 kHz, +20 dBu output level, no load: Better than 0.0025%
- @ 20 Hz, +20 dBu output level, no load: 0.13% Typical (2nd and 3rd harmonic)
HIGH PASS FILTER
- -2.7 dB @ 80 Hz
- Slope: 12 dB/Octave
NOISE
- Measured at Main Output, un-weighted, 22 Hz - 22 kHz, source impedance 40 Ohm balanced.
- Better than -94 dBV
FREQUENCY RESPONSE
Main output, no load: +/- 0.25 dBu from 20 Hz to 45 kHz, -2 dB @ 120 kHz
MAXIMUM OUTPUT LEVEL
23 dBu
TOTAL HARMONIC DISTORTION AND NOISE
- @ 1 kHz, +20 dBu output level, no load: Better than 0.009%
- @ 20 Hz, +20 dBu output level, no load: 0.13% Typical (2nd and 3rd harmonic)
POWER REQUIREMENTS
- 120mA on +16VDC
- 110ma on -16VD
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