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Manley ELOP+ Owner's Manual

Electro-optical vacuum tube limiter / compressor
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ELECTRO-OPTICAL VACUUM TUBE LIMITER / COMPRESSOR
OWNER'S MANUAL

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Summary of Contents for Manley ELOP+

  • Page 1 ELECTRO-OPTICAL VACUUM TUBE LIMITER / COMPRESSOR OWNER’S MANUAL...

  • Page 2: Table Of Contents

    Contents CHAPTER PAGE Introduction Manual Conventions iii) Copyright Notice Important Safety Instructions Getting Started Front Panel Rear Panel Operational Notes Advanced Tricks Questions & Troubleshooting Servicing 10-11 Specifications Recall Sheet This equipment has been tested and found to comply with the limits for a class B digital device, pursuant to part 15 of the FCC Rules.

  • Page 3: Ii) Manual Conventions

    The useful side-chain high-pass filter and 3:1 Compressor makes this piece of equipment a versatile and useful tool in the studio. Each ELOP+ features our hand wound MANLEY IRON® transformers and large easy to read amber back lit VU Meters, which can monitor the Output Level or Gain Reduction.

  • Page 4: Important Safety Instructions

    7. Servicing - Do not attempt any servicing without consulting your dealer or Manley Laboratories, Inc. The user should not attempt to service the unit beyond that described in the operating instructions. All other servicing should be referred to qualified service personnel.

  • Page 5: Front Panel

    3. Front Panel Diagram 1 GAIN CONTROL The GAIN control is available on both the left and the right channel. It adjusts the input drive of that audio channel. Unity gain is about the seventh marking, or 1 o'clock. (This is not an absolute, the user should adjust the gain controls when the Limiter is active, by reading the level on each meter.) Limiting usually requires some additional "make-up"...

  • Page 6: Front Panel

    3. Front Panel Diagram 1 METER SELECT The Meter select switch allows the user to monitor either Gain Reduction or the Output level of the unit. When the switch is engaged and illuminated, the output of the particular channel you are monitoring is visible in the corresponding VU Meter.

  • Page 7: Rear Panel

    4. Rear Panel Diagram 2 HAND CRAFTED IN THE USA XLR OUTPUT (IMPEDANCE BALANCED) (CH1, LEFT) PIN 1: GROUND PIN 2: (+) PIN 3: (-) XLR INPUT (TRANSFORMER BALANCED) (CH1, LEFT) PIN 1: GROUND PIN 2: (+) PIN 3: (-) XLR OUTPUT (IMPEDANCE BALANCED) (CH2, RIGHT) PIN 1: GROUND PIN 2: (+)

  • Page 8: Operational Notes

    7. Operational Notes The Manley ELOP+ follows certain traits and However, there are many poor examples of tube traditions established by the UREI LA-2A and similar circuits in the field, and many ways to butcher the historic leveling amplifiers. quality. We chose to use our favorite simple tube line amplifier circuit which we also use in our Mic Preamps, Enhanced Pultec Equalizers and the CORE.
  • Page 9 7. Operational Notes The slope or ratio is also difficult to simulate. The of the drum is diminished. If used gently, this can be initial ratio is low and becomes higher with more applied to brighten up the attack of the drum, but it gain reduction until the LEDs light up fully and is difficult to apply in practice because drums can further reduction is not possible.

  • Page 10: Advanced Tricks

    6. Advanced Tricks Here are a few tricks that are not really for rookies. room for clarity. They come from guys doing major records for years Trick#4 and won’t work unless you’ve mastered the basics. Drive the compressor from an AUX send and return it In other words if we gave you a Strat and Marshall it to a channel.

  • Page 11: Questions & Troubleshooting

    Q: Levels Seem To Be Wrong, No Bottom ? features protection circuitry to stop any damage being Several possible scenarios. Manley uses the professional caused to itself. If at anytime the unit will not power-up standard of +4 dBm = Zero VU = 1.23 volts AC RMS. A lot of the protection circuitry may have been triggered.

  • Page 12: Servicing

    5000-6000 hours, after which time the tubes should be replaced. If the ELOP+ has become noisy, this could be related to tube wear. Consult your dealer or purchase new tubes from Manley Labs. We supply low noise and graded quality. Simply hold the tube firmly at its base and vertically pull upwards, freeing the tube from its socket.
  • Page 13 9. Servicing CALIBRATION / INTERNAL ADJUSTMENTS - FOR EXPERIENCED TECHNICIANS ONLY* Before starting any procedure, please set the front panel controls to these settings & remove the top cover; BYPASS mode, LINK OFF, REDUCTION controls counter clockwise (MIN), GAIN to 1:00 or unity, S.C. at “Flat”. THERE ARE HIGH VOLTAGES INSIDE THE ELOP+.

  • Page 14: Specifications

    10. Specifications MANLEY ELOP+ STEREO ELECTRO-OPTICAL VACUUM TUBE LIMITER / COMPRESSOR Ÿ ALL-TUBE audio path using a 5751 for gain, 6922 White Follower output tube (one each per channel) Ÿ Silent Conductive Plastic GAIN control. Ÿ Balanced MANLEY IRON Transformer coupled XLR input.

  • Page 15: Recall Sheet

    11. Recall Sheet...
  • Page 16 Designed & Handcrafted in the USA Manley Laboratories, Inc. 13880 Magnolia Avenue Chino, CA 91710 USA T: +1 (909) 627-4256 www.manley.com Rev. 1.5 ZF 2017...

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