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User Manual for Manley Labs ELOP Electro-Optical Vacuum Tube Limiter Compressor Click to enlarge the picture
Contents of the user manual for the Manley Labs ELOP Electro-Optical Vacuum Tube
- Product category: Dynamics Processors Manley Labs
- Brand: Manley Labs
- Description and content of package
- Technical information and basic settings
- Frequently asked questions – FAQ
- Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
- Authorized service for Manley Labs Dynamics Processors
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User manual for the Manley Labs ELOP Electro-Optical Vacuum Tube contain basic instructions
that need to be followed during installation and operation.
Before starting your appliance, the user manual should be read through carefully.
Follow all the safety instructions and warnings, and be guided by the given recommendations.
User manual is an integral part of any Manley Labs product,
and if it is sold or transferred, they should be handed over jointly with the product.
Following the instructions for use is an essential prerequisite for protecting
health and property during use, as well as recognition of liability on the part of the manufacturer
for possible defects should you make a warranty claim. Download an official Manley Labs user manual in which you will find instructions on how to install, use, maintain and service your product.
And do not forget – unsuitable use of a Manley Labs product will considerably shorten its lifespan!
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Product description With iron-balanced, transformer-coupled inputs, an all-tube audio path, and an electro-optical attenuation circuit, the Manley ELOP+ is a dual-channel compressor and limiter. It’s capable of achieving pleasing dynamic-taming results in the studio, especially when tracking vocals or instruments.The ELOP+ follows in the footsteps of heralded studio levelers such as the UREI LA-2A, providing relatively few controls in comparison to many other compressors: there are no attack, release, or knee controls. Instead, you are presented with a reduction-control knob, make-up gain, and a button to switch between a 3:1 and 10:1 ratio—though these are approximations, as they are highly sensitive to the material fed into the compressor. These streamlined controls allow you to attain sonically desirable compression in a straightforward manner: Simply select a preferred ratio, set the threshold to achieve the amount of gain-reduction you’d like to effect (along with your ears, you can use the meters provided for a visual aid), and adjust the make-up gain to taste.Both channels sport their own gain, ratio, bypass, and reduction controls, with each channel providing a high-pass sidechain button; this prevents frequencies below 80 Hz from effecting the signal. Both channels sport their own VU meters, which can be switched to indicate gain reduction or overall output level.If you’re routing a stereo source through the ELOP+, you might want to make use of the stereo/link button, which will prevent your stereo image from wandering when one channel becomes louder than the other. The unit, occupying 2 RU of rack space, comes with its own internal power supply specifically calibrated to handle its complement of tubes. Suggested uses of this compressor include vocals, bass, guitar, brass, woodwinds, and synthesizers, upon which the ELOP+ can impart transparent and subtle dynamics-taming. The compressor is also suitable for room mics used to capture drum kits. - Controls Explained
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- Gain Control: This control is available on both the left and right channels, and adjusts the gain of each audio channel. Unity gain is at about the seventh marking, or 1 o'clock. Limiting usually requires some additional make-up gain to compare with signal in a disengaged (bypassed) state. The Gain control can also be used as the level to tape.
- Reduction Control: This control is available on both the left and the right channels, and adjusts the amount of limiting or compression in a channel. This could also be thought of as a threshold control. Turning this control clockwise increases the amount of limiting or compression.
- High-pass Sidechain Control: This is factory-set at 80 Hz. When this switch is engaged and illuminated, everything above 80 Hz will have the effect of limiting or compression, while every frequency at 80 Hz or below will not affect the compressor. This is useful if you want the bass to come through with full impact while applying the limiter/compressor to everything else. This filter frequency may be set to a slightly higher frequency of 150Hz by changing the internal HPSC filter select jumper. For more information on how to do this, please consult your manual.
- In / Bypass Control: This switch dictates whether your audio flows through the Limiter/Compressor or just straight through the unit. If the switch is engaged and illuminated to the "IN" position, the audio will pass through, and gain reduction will occur. When this switch is set to "BYPASS" the audio still flows through the tubes in the unit, but at unity gain, and without any gain reduction. Use this switch to verify that the limiting or compressing is not messing up the original sound, but enhancing it, or at least leveling the volume. Alternatively, you might like the tonal characteristics this unit, left in bypass, imparts on your mix.
- Compress / Limit Control: This switch allows the ELOP+ to use two different compression ratios. The compression ratio is approximately 3:1 when the switch is engaged and illuminated, and approximately 10:1 when set to limiting.
- Meter Select Switch: This allows the user to monitor either gain reduction or the output of the unit. When the switch is engaged and illuminated, the output of the channel you are monitoring is visible in the corresponding VU Meter.
- Link / Stereo Function: When this switch is engaged, the ELOP+ applies the same amount of gain reduction to both the left and right channels. This is done to prevent stereo-image shifting, which can occur if each channel is compressed individually. It becomes noticeable when a loud element that is panned to either edge of the stereo field raises the level of the program to the compressor's threshold, causing its image to shift toward the center of the stereo field. It is important to note that in Link mode, there is no "Left Channel Master". Each control still works independently of each other. Stereo is used on stereo tracks, so if either channel is called to limit, both channels reduce the same amount at the same time. This prevents image shifts and an instrument should stay where you panned them.
- Features at a Glance
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- 10:1 limiter and 3:1 compressor ratios
- All-tube audio path uses 5751 and 6922 dual triodes
- Balanced Manley IRON transformer-coupled XLR inputs
- XLR impedance-balanced outputs
- Large illuminated VU meters read gain reduction or output levels
- Stereo linking
- Sidechain high-pass filter at 80 Hz, user-adjustable to 150 Hz
- Universal internal power supply
In the Box Manley Labs ELOP+ Electro-Optical Vacuum Tube Limiter/Compressor Limited 90-Day Warranty (5 Years When Registered within 30 Days of Original Purchase) Table of Contents
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Technical parametersManley Labs ELOP+ Specs | Tubes | 5751 for gain, E88CC / 6922 white follower | | Input Attenuator | Silent conductive plastic | | Maximum Input Level | 18 dBu or 4.8 V RMS @ 0.01% THD | | Input Connector | 2 x balanced transformer-coupled XLR inputs | | Output Connector | 2 x impedance-balanced XLR outputs | | Input Impedance | 14 kOhms | | Output Impedance | 150 Ohms | | Maximum Output | 22 Hz to 22 kHz bandwidth; 1 kHz sine
30 dBu @ 0.009% THD+N, 100 kOhm Load
20 dBu @ 0.015% THD+N, 600 Ohm Load | | Headroom | Output, Referenced to 4 dBu: 26 dB | | Frequency Response | -0.15 dB @ 10 Hz; -0.1 dB @ 20 kHz | | THD | 0.004% THD+N (1 kHz sine @ 4 dBu, 22 Hz to 22 kHz bandwidth) | | Noise Floor | Limiter with Input Set to Unity Gain:
Bypass: -90 dBu
Engaged: -88 dBu | | Dynamic Range | 118 dB | | Signal to Noise Ratio | 92 dB (referenced to +4 dBu) | | Maximum Gain | 13 dB | | CMRR | 77 dB (BW: 22 Hz to 22 kHz, 4 dBu, 1 kHz sine) | | Ratio | Limiter: 10:1
Compressor: 3:1 | | Limiter | Attack: 26 ms
Release: 200 ms
Maximum Limiting with 4 dBu, 1 kHz Sine: Approximately 12 dB | | Compressor | Attack: 75 ms
Release: 200 ms
Maximum Compression with 4 dBu, 1 kHz Sine: Approximately 6 dB | | High-Pass Filter | Sidechain: 80 Hz, internal user adjust jumper to 150 Hz | | Warm-Up Period | Automute Warmup Delay: 30 sec | | Operating Voltage | 90 to 254 VAC (internal universal power supply); 50/60 Hz | | Power Consumption | 26 W | | Rackmount Space | 2 RU | | Dimensions | 19.0 x 3.5 x 7.0" / 48.3 x 8.9 x 17.8 cm | | Weight | 11 lb / 5 kg |
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