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Oldfield Amplifiers
Owners Guide
Marquis 36 - 6736

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Summary of Contents for Oldfield Amplifiers Marquis 36

  • Page 1 Oldfield Amplifiers Owners Guide Marquis 36 - 6736...
  • Page 2 Thank You Welcome to the Oldfield family and thank you for putting your trust in Oldfield Amplifiers. We value that trust as much as we think you will enjoy your new Oldfield amplifier. Your new Oldfield amplifier is built to provide you with the best tonal experience and durability available in a guitar amplifier.
  • Page 3: Table Of Contents

    Table Of Contents Important Safety Instructions.............4~5 Overview....................6 Front Panel Controls And Features............7 Rear Panel Controls And Features………………………………….……8 Tube Layout…………………………………….……………………………9 Warranty…………………………………………………………..….…….10...
  • Page 4: Important Safety Instructions

    Important Safety Instructions Δ For your safety read, retain, and follow all instructions. Heed all warnings. Δ Only connect the power supply cord to an earth-grounded AC receptacle.  This amplifier is designed to operate on standard North American 115V AC and should only be plugged in to a receptacle meeting those specifications.
  • Page 5 Δ CAUTION: By nature vacuum tubes get very hot during operation.  Do not touch vacuum tubes until they have sufficiently cooled. Δ Oldfield amplifiers are capable of producing very high sound pressure levels which may cause temporary or permanent hearing damage. Use care when setting and adjusting volume levels during use.
  • Page 6: Overview

    The Marquis 36 has two very distinctly voiced channels. Channel One is the cleaner of the two channels with slightly more headroom. It’s very simple with just a volume control and tone control.
  • Page 7: Front Panel Controls And Features

    (Reference the front panel viewing left to right) 1. Manual Channel Selector: This switch is used to select either Channel One or Channel Two of the Marquis 36.  (Note: The switch must be in the Channel Two position when operating the amplifier with the footswitch.)
  • Page 8: Rear Panel Controls And Features

    Rear Panel: Controls And Features (Reference the rear panel viewing left to right) 1. Power Cord: Connect to electrical main supply.  Your amplifier is designed to operate on 120v AC. 2. Fuse: Replace only with a 3A slo-blo fuse.  Never install a larger fuse than specified.  Failure to install the properly rated fuse could result in damage to the amplifier.
  • Page 9: Tube Layout

    RECTIFIER TUBE: 5R4.  Replace only with high quality 5R4 (or compatible) tube. POWER TUBES: EL84 (x4).  Replace only with a high quality matched quad of EL84 tubes.  The Marquis 36 is a Class A, cathode biased amplifier and therefore does not need to be re-biased when changing output tubes.
  • Page 10: Warranty

    Warranty The following warranties apply to the original owner of the amplifier.  All warranty work must be performed by Oldfield or an authorized technician for the warranty to be in effect.  Warranties do not cover normal wear and tear or abuse. Failure to comply with the safety precautions outlined earlier in the owner’s manual will void all warranties.

This manual is also suitable for:

6736