Mesa/Boogie DUAL & TRIPLE Rectifier Owner's Manual
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Mesa/Boogie DUAL & TRIPLE Rectifier Owner's Manual

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Summary of Contents for Mesa/Boogie DUAL & TRIPLE Rectifier

  • Page 1 ulti DUAL & TRIPLE Owner’s Manual...
  • Page 2 Hello from the Tone Farm ...You, smart player and all around intuitive human, have put your trust in us to be your amplifier company. This is something we do not take lightly.By purchasing and choosing this unit to be a part of your musical voice, you have become part of the MESA family...WELCOME! Our goal is to never let you down.Your reward is that you are now the owner of a great amp, bred of fine all tube amp heritage...benefiting from the many pioneering and patented MESA circuits that led to the refinement of...

  • Page 3: Important Safety Instructions

    Make certain grounding conforms with local standards. YOUR AMPLIFIER IS LOUD! EXPOSURE TO HIGH SOUND VOLUMES MAY CAUSE PERMANENT HEARING DAMAGE! Your Mesa/Boogie Amplifier is a professional instrument. Please treat it with respect and operate it properly. READ AND FOLLOW INSTRUCTIONS OF PROPER USAGE.

  • Page 4: Table Of Contents

    Multi-Watt Dual & Triple Rectifier TABLE OF CONTENTS Overview ______________________________________________________________________________1-2 FRONT PANEL CONTROLS Getting Started & Helpful Hints ___________________________________________________________2-3 Instant Gratification (3 sample settings) _____________________________________________________ 4 CHANNEL MODES Channel 1 (Clean / Pushed) _______________________________________________________________ 4 Channel 2 & 3 (Raw, Modern & Vintage) ____________________________________________________5-6 Multi-Watt™...

  • Page 5: Overview

    Multi-Watt Dual & Triple Rectifier Operating Instructions Overview: Congratulations on your choice of the new Three Channel Dual or Triple Rectifier Head as your amplifier! Their two channel relatives launched a sound back in 1990 that would come to define a musical style and now, 20 years later, are synonymous with high gain guitar.

  • Page 6: Front Panel Controls

    FRONT PANEL: C & F ONTROLs EATuREs highest power, keeping the sound tight and percussive and the feel immediate and accurate. To finish off the power choices, the patented BOLD/SPONGY Power switch creates a built-in Variac that enables you to switch the incoming AC line voltage down to ap- proximately 95 volts for additional sag and a “browner”...
  • Page 7 HELPFUL HINTS: 1.) The Rear Panel CHANNEL SELECT rotary switch must be set to FOOTSWITCH for the Footswitch to select either channels or features. 2.) The OUTPUT Control works only when the FX LOOP is activated. Switch out of the Loop Bypass position on the Loop Assign Rotary Control to any of the other 5 positions.

  • Page 8: Instant Gratification (3 Sample Settings)

    INSTANT GRATIFICATION: Here are some examples of the most popular sounds in the three channels. There are additional sample sounds presented later in this manual, but the possibilities are endless and we encourage you to find your own sounds through experimentation.

  • Page 9: Channel 2 & 3 (Raw, Modern & Vintage)

    CHANNEL MODES: (Continued) RAW: CHANNEL 2 + 3 RAW / VINTAGE / MODERN This mode is the lowest gain of the three in the two high gain lead channels. Its less saturated nature greatly enhances the already versa- tile bevy of sounds the two original lead channels offered. The range of gain available covers an extremely wide spectrum and it can be set to double as a formidable alternate clean mode, a low gain purring blues sound and be- MODERN...

  • Page 10: Multi-Watt™ Power

    CONTROLS: GAIN: This control adjusts the predominant gain stage in each channels’ circuit with the function and taper being optimized for each individual channel. Remember that your Recto is really three separate multi-mode amplifiers built onto one chassis, so though each channel looks identical, the GAIN Control for each channel comes REGIONAL TITLES ARE THE SAME FOR ALL in a different place and adjusts a different point in that channels circuit.

  • Page 11: The Controls

    The Controls: (Continued) TREBLE : As in most tube guitar amplifiers, the TREBLE Control (in all three channels of your Recto ) is the most power- ful of the rotary controls and is next in line only to the GAIN Control as a shaping tool. Because it is first in the signal path of the tone controls - and from here the Middle and Bass receive their signal - it is by far the dominant tone control.

  • Page 12: Mid, Presence And Bass

    The Controls: (Continued) MID : The MID Control is responsible for the blend of midrange frequencies in the mix and though its effect is not as dra- matic as that of the TREBLE Control, it plays an integral part in achieving any sound in your Recto. It is capable of changing the feel dramatically as it blends in a group of frequencies that REGIONAL TITLES ARE THE SAME FOR ALL 3 MID CONTROLS tend to soften or stiffen the way a sound feels to play.

  • Page 13: Output And Solo

    The Controls: (Continued) BASS: Last, but not least in the string of tone controls we come to the BASS . This control works similarly in all three chan- nels in that it determines the amount of low frequencies present in a sound. However, the actual frequencies and style of lows it mixes in changes from channel to channel.
  • Page 14 The Controls: (Continued) Therefore, we recommend selecting Channel 1 when you wish to use the Recto as a power amp. The more conventional power sensitivity of this channel will be the most compatible with external sources. Also, using Channel 1 in a power-only application means that the PRESENCE Control will be active which allows you to tailor the power voicing to your specific tastes.

  • Page 15: Standby And Power

    REST AREA PAGE 11...

  • Page 16: Slave Control

    Rear Panel in order to verify the impedance rating of the individual speaker or speakers. MESA/Boogie 4x12 and 4x10 cabinets come standard wired to 8 Ohms, and are wired in series-parallel. Some Non-MESA 4x12 cabinets are wired 16 Ohms using four 16 Ohm speakers.
  • Page 17 REAR PANEL: (Continued) FX LOOP: (Continued) 3.) A SEND jack that captures the preamp signal and pads it down to accommodate outboard signal processors input stage. 4.) A RETURN jack that accepts the signal from a processors output and boosts the level back up to unity gain (or beyond) to be mixed back into the original signal.

  • Page 18: External Switching Jacks

    REAR PANEL: (Continued) TUNER OUT: This Output jack will enable you to feed a tuner with a clean padded signal derived from the first gain stage. A silent tune feature is engaged when you select TUNER on the Footswitch that mutes the signal to the speakers to allow you to tune the instrument without disturbing the band and audience.

  • Page 19: Bias Switch

    REAR PANEL: (Continued) BIAS SWITCH: (Continued) MAKE SURE THAT THE BIAS SWITCH IS SET CORRECTLY TO MATCH THE TUBE TYPE THAT YOU ARE USING. Failure to do this will result in tube failure that could possibly burn resistors in the Bias supply. Although this is a fairly simple repair for an authorized technician, it is easily avoidable.

  • Page 20: Power: Spongy & Bold

    REAR PANEL: (Continued) POWER: SPONGY & BOLD The two different power selections of both the Dual and Triple Rectifier Heads are equally important when looking for a particular sound. “SPONGY” works like a built in Variac, reducing all the internal voltages for a true vintage feeling and that extraordinary “brown sound.”...

  • Page 21: Factory Sample Settings (All 3 Channels)

    FACTORY SAMPLE SETTINGS CHANNEL 1: Sample Setting #1 TITLE: SQUEAKY CLEAN CLEAN PUSHED GAIN PRESENCE MASTER GAIN PRESENCE MASTER GAIN PRESENCE MASTER TREBLE TREBLE BASS TREBLE BASS BASS 100 WATT SOLO OUTPUT INPUT MODERN MODERN 50 WATT CHANNEL 1: Sample Setting #2 TITLE: BOLD, PUNCHY CLEAN CLEAN PUSHED...

  • Page 22: Solo Output

    FACTORY SAMPLE SETTINGS CHANNEL 2: Sample Setting #1 TITLE: RAW PURR MODERN GAIN PRESENCE MASTER GAIN PRESENCE MASTER GAIN PRESENCE MASTER TREBLE BASS TREBLE BASS CLEAN TREBLE BASS INPUT 100 WATT SOLO OUTPUT PUSHED MODERN 50 WATT CHANNEL 2: Sample Setting #2 TITLE: RAW GRIND MODERN GAIN...
  • Page 23 FACTORY SAMPLE SETTINGS TITLE: AGRO RHYTHM CHANNEL 3: Sample Setting #1 MODERN GAIN PRESENCE MASTER GAIN PRESENCE MASTER GAIN PRESENCE MASTER TREBLE TREBLE BASS BASS TREBLE CLEAN BASS INPUT 100 WATT SOLO OUTPUT PUSHED MODERN 50 WATT TITLE: SERIOUS GRIND CHANNEL 3: Sample Setting #2 MODERN GAIN...

  • Page 24: Personal Setting Sheets

    PERSONAL SAMPLE SETTINGS TITLE: CLEAN PUSHED GAIN PRESENCE MASTER GAIN PRESENCE MASTER GAIN PRESENCE MASTER TREBLE TREBLE BASS TREBLE BASS BASS 100 WATT SOLO OUTPUT INPUT MODERN MODERN 50 WATT TITLE: CLEAN PUSHED GAIN PRESENCE MASTER GAIN PRESENCE MASTER GAIN PRESENCE MASTER TREBLE...
  • Page 25 PERSONAL SAMPLE SETTINGS TITLE: MODERN GAIN PRESENCE MASTER GAIN PRESENCE MASTER GAIN PRESENCE MASTER TREBLE TREBLE BASS BASS TREBLE CLEAN BASS INPUT 100 WATT SOLO OUTPUT PUSHED MODERN 50 WATT TITLE: MODERN GAIN PRESENCE MASTER GAIN PRESENCE MASTER GAIN PRESENCE MASTER TREBLE BASS...
  • Page 26 PERSONAL SAMPLE SETTINGS TITLE: MODERN GAIN PRESENCE MASTER GAIN PRESENCE MASTER GAIN PRESENCE MASTER TREBLE TREBLE BASS BASS CLEAN TREBLE BASS INPUT 100 WATT SOLO OUTPUT PUSHED MODERN 50 WATT TITLE: MODERN GAIN PRESENCE MASTER GAIN PRESENCE MASTER GAIN PRESENCE MASTER TREBLE BASS...

  • Page 27: Tube Description & Task Charts

    PAGE 23...
  • Page 28 PAGE 24...

  • Page 29: Tube Noise & Microphonics

    TUBE NOISE & MICROPHONICS You may occasionally experience some form of tube noise or microphonics. Certainly no cause for alarm, this quirky behavior comes with the territory and the Tone. Much like changing a light bulb, you don’t need a techni- cian to cure these types of minor user serviceable annoyances and in fact, you’ll be amazed at how easy it is to cure tube problems...

  • Page 30: Diagnosing Pre-Amp Tube Problems

    DIAGNOSING PRE-AMP TUBE PROBLEMS: Because your amplifier is an all tube design, it is quite possible that you will at some point experience minor pre-amp tube noise. Rest assured - this is no cause for alarm and you can take care of the problem yourself in a matter of minutes by simply swapping tubes.

  • Page 31: Bias Adjustment: A Feature Article By Randall Smith

    BIAS ADJUSTMENT: (Part of a continuous series) BEAM- An Article written by Randall Smith that CONFINING CATHODE we thought you might find interesting. ELECTRODE GRID ..SCREEN . . . GRID .
  • Page 32 BIAS ADJUSTMENT (Continued) Voltage and current are NOT the same. Current is the AMOUNT of electricity, the “quantity” — and is measured in amperes. Voltage is the degree of electric charge — like the “pressure” to use the old water analogy. Let me illustrate how different voltage and current are: When you scrape your feet across a carpeted floor in dry, wintery conditions, your body can become charged with 50,000 to 100,000 volts of static electricity.
  • Page 33 How much money and trouble that has saved MESA/Boogie players you couldn’t estimate. Our rigorously tested and hand selected tubes are available at your nearest MESA/Boogie Pro Center or from us directly. Nobody offers better price, quality or warranty than we do ... so why swerve? Cheers! MESA/Boogie Ltd.

  • Page 34: Speaker Impedance & Possible Hook-Up Schemes - Amplifier To Speaker Cabs

    MESA/Boogie amplifiers can handle 4 and 8 ohms effectively. Never run below 4 ohms in a tube amplifier unless you are absolutely certain that the system can handle it properly; this can cause damage to the Output transformer. A few amplifiers can handle 2 ohms effectively without damaging them (for example the MESA’s Bass 400+).

  • Page 35: Speaker A Speaker B

    SPEAKER IMPEDANCE MATCHING & HOOK-UP GUIDE: (Continued) PARALLEL: When wiring in parallel, the resistance of the speakers decreases. Two 8 ohm speakers wired in (hooked-up) Parallel results in a 4 ohm load. It’s easy to calculate the effect of a resistive load when all the speakers are all the same resistance. It is really not suggested to wire different resistive load values in Parallel (8 and 4, 16 and 8 etc.) The formula for figuring the total impedance in Parallel is the multiplication of the two loads divided by the sum of the two loads - i.e.
  • Page 36 WIRING SCHEMES...Amplifier to Speaker Cabinets Partial back view of amplifier Partial back view of amplifier 8 OHM 4 OHM 4 OHM 8 OHM 4 OHM 4 OHM 8 Ohm Cabinet Partial back view of some Mesa amp 8 OHM 4 OHM 4 OHM 4 Ohm Cabinet 8 Ohm Cabinet...
  • Page 37 WIRING SCHEMES...Amplifier to Speaker Cabinets Partial back view of amplifier Partial back view of amplifier 4 OHM 4 OHM 8 OHM 8 OHM 4 OHM 4 OHM 8 Ohm Cabinet 16 Ohm Cabinet 8 Ohm Cabinet 8 Ohm Cabinet SAFE MISMATCH CORRECT MATCH Partial back view of amplifier Partial back view of amplifier...
  • Page 38 WIRING SCHEMES...Amplifier to Speaker Cabinets Partial back view of amplifier 16 Ohm 4 OHM 4 OHM 8 OHM SERIES BOX 8 Ohm 8 Ohm 8 Ohm Cabinet 8 Ohm Cabinet 8 Ohm Cabinet SAFE MISMATCH Partial back view of amp Partial back view of amplifier CORRECT MATCH 8 OHM...
  • Page 39 WIRING SCHEMES...Amplifier to Speaker Cabinets Partial back view of amplifier 16 Ohm 4 OHM 4 OHM 8 OHM SERIES BOX 8 Ohm 8 Ohm 8 Ohm Cabinet 8 Ohm Cabinet 16 Ohm Cabinet SAFE MISMATCH Partial back view of amplifier 8 OHM 4 OHM 4 OHM...

  • Page 40: Triodes, Pentodes & Irishmen: A Feature Article By Randall Smith

    A look into the inner workings of the Vacuum Tube ON TRIODES, PENTODES & IRISHMEN: With apologies to Friends and Relatives from the Emerald Isle - who will make their appearance soon enough - the humor which follows is dedicated to the memories of Spec McAuliff and Fae (Rafael) McNally, two of the True Greats. As their numerical references suggest, the terms Diode, Triode and Pentode indicate the number of elements within the vacuum tube i.e.
  • Page 41 ON TRIODES, PENTODES & IRISHMEN: ( Continued ) Thus a diode tube - one with a cathode and an anode - is mostly used to rectify alternating current into direct current by passing it without restriction, but in one direction only. This also explains why closing time is strictly enforced at Irish pubs: During normal opera- tion, the traffic flow is similarly unimpeded and uni-directional toward the bar and this process rectifies the work-day negativity.
  • Page 42 ON TRIODES, PENTODES & IRISHMEN: ( Continued ) PENTODES: (Continued) Thus the proper cocktail waitress - visible through the louvers - is scantily clad so as to be all the more effective at reinforcing the attractive influence of her bar and by being located in between the door and the bar, she serves as bait to lure customers past the door’s negative influence.

  • Page 43: Parts Sheet

    PAGE 39...
  • Page 44 OOGIE ® The Spirit of Art in Technology Thank you for trusting MESA/Boogie to be your amplifier company. We wish you many years of toneful enjoyment from this handbuilt all tube instrument. ®...
  • Page 46 The Spirit of Art in Technology ® (707) 778-6565 FAX NO. (707) 765-1503 1317 Ross Street Petaluma, CA 94954 08/02/10...

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