Manley Langevin Pultec EQP1-A Owner's Manual

All-discrete pultec eqp1-a type equalizer
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OWNER'S MANUAL
LANGEVIN
ALL-DISCRETE PULTEC
EQP1-A TYPE EQUALIZER
MANLEY
LABORATORIES, INC.
MANUFACTURED BY
MANLEY LABORATORIES, INC.
13880 MAGNOLIA AVE.
CHINO, CA. 91710
TEL: (909) 627-4256
FAX: (909)628-2482
email: emanley@netcom.com
http://www.manleylabs.com

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  • Page 1 OWNER'S MANUAL LANGEVIN ALL-DISCRETE PULTEC EQP1-A TYPE EQUALIZER MANLEY LABORATORIES, INC. MANUFACTURED BY MANLEY LABORATORIES, INC. 13880 MAGNOLIA AVE. CHINO, CA. 91710 TEL: (909) 627-4256 FAX: (909)628-2482 email: emanley@netcom.com http://www.manleylabs.com...
  • Page 2: Table Of Contents

    CONTENTS SECTION PAGE INTRODUCTION MAINS CONNECTIONS OPERATION CONNECTIONS FRONT PANEL REAR PANEL SERVICE SPECIFICATIONS WARRANTY WARRANTY REGISTRATION APPENDIX "1" WIRING YOUR OWN CABLES...
  • Page 3: Introduction

    PULTECS. It is also the exact EQ section found in our MANLEY Enhanced Pultec EQ, the difference being that the Manley unit uses and all-tube make up gain amplifier while the Langevin employs an all discrete make up gain amplifying circuit. Our versions of this classic EQ incorporates superior modern components with our proven line- amp superiority for absolute sonic cleanliness...
  • Page 4: Mains Connections

    MAINS CONNECTIONS Your Pultec has been factory set to the correct mains voltage for your country. The voltage setting is marked on the serial badge, located on the rear panel. Check that this complies with your local supply. Export units for certain markets have a moulded mains plug fitted to comply with local requirements. If your unit does not have a plug fitted the coloured wires should be connected to the appropriate plug terminals in accordance with the following code.
  • Page 5: Operation

    EQs may be more versatile for removing some types of problems, they may be the wrong choice for a general every-day "tone" controls. The old Pultec EQs are famous for the drums, bass and whatever could use some extra "cruch" with that big low bottom end, but the Manley/Langevin are clean enough to use on anything.
  • Page 6: Connections

    CONNECTIONS The Langevin products are very easy to connect in most studio situations. There are both XLR balanced inputs and outputs as well as 1/4 inch jacks for unbalanced inputs and outputs. Please read this section because there is some special considerations and notes. The XLR Inputs and Outputs are transformerless.
  • Page 7: Front Panel

    FRONT PANEL BOOST SELECT BANDWIDTH SELECT BOOST SELECT CUT POWER BYPASS LOW FREQUENCY HIGH FREQ. CUT HIGH FREQUENCY BOOST SECTION SECTION SECTION IN / BYPASS - This switch in BYPASS mode bypasses the EQ section while the amplifier remains in circuit. L.F.
  • Page 8: Rear Panel

    REAR PANEL IEC MAINS SOCKET - Accepts standard 50/60 Hz AC mains voltage. The third pin earth is tied to chassis in this unit. Inside the unit (if the top is removed) is a switch next to the power transformer for selecting mains voltage for either 110 or 220 VAC. This is factory set for your country but if you do a lot of international recording it is nice to know this unit can go with you.
  • Page 9: Service

    SERVICE NOTES GAIN The gain of the makeup amplifier is factory preset for unity gain from input to output in bypass mode (which is also the same as all boost & cut controls set at minimum positions, fully counter-clockwise). If for some reason your EQ needs to be re-trimmed for unity gain or you need other than unity gain the trimmer is labelled VR1 and it adjusts the basic gain of the output line amplifiers.
  • Page 10: Specifications

    SPECIFICATIONS Circuit All discrete transistor used only for gain EQ is passive - no transistors in EQ Transformerless Regulated low noise supply Frequency response ±0.5 dB 10Hz to 60KHz >.04% Noise (w/ 80KHz filter) 0.25 mV (-70dB) S/N ratio (Ref. 20V) @1KHz 99 dB Input Impedance 20 k ohms...
  • Page 11: Warranty

    The product will then be returned via prepaid, insured freight, method and carrier to be determined solely by Manley Laboratories. All returns to the factory must be in the original packing, (new packing will be supplied for no charge if needed), accompanied by a written description of the defect, and must be shipped to Manley Laboratories via insured freight at the customer's own expense.
  • Page 12: Warranty Registration

    Registration entitles you to product support, full warranty benefits, and notice of product enhancements and upgrades. You MUST complete and return the following to validate your warranty and registration. Thank you again for choosing Manley Laboratories. MODEL ____________________ SERIAL No. ______________________...

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