Mesa/Boogie Dual & Triple Rectifier Solo Heads Owner's Manual
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B
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ESA
OOGIE
DUAL & TRIPLE
SOLO HEADS
Owner's Manual

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Summary of Contents for Mesa/Boogie Dual & Triple Rectifier Solo Heads

  • Page 1 OOGIE DUAL & TRIPLE SOLO HEADS 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.
  • Page 3: Table Of Contents

    DUAL & TRIPLE RECTIFIER SOLO HEADS TABLE OF CONTENTS Precautions OVERVIEW & INSTANT GRATIFICATION FRONT PANEL CONTROLS POWER-UP GAIN / TREBLE / MIDDLE BASS / PRESENCE MASTER and LOOP ACTIVE MASTER TOGGLE SWITCHES: POWER / ON and ON / STANDBY REAR PANEL CONTROLS, SWITCHES &...
  • Page 4 PRECAUTIONS & WARNINGS Your MESA/Boogie Amplifier is a professional instrument. Please treat it with respect and operate it properly. USE COMMON SENSE AND ALWAYS OBSERVE THESE PRECAUTIONS: WARNING: EU: permission from the Supply Authority is needed before connection. WARNING: Vacuum tube amplifiers generate heat. To insure proper ventilation always make certain there is at least four inches (100mm) of space behind the rear of the amplifier cabinet.
  • Page 5: Overview & Instant Gratification

    DUAL & TRIPLE RECTIFIER SOLO HEADS Operating Instructions Congratulations for choosing either the DUAL or TRIPLE RECTIFIER Solo Head. You have purchased a handbuilt instrument of the finest quality and craftsmanship. A unique blend of yesteryear’s black magic power section design combined with our race- shop approach to finely tuned, high gain pre-amp circuitry leaves both of these amps standing alone...instantly classics and destined for vintage status.
  • Page 6: Front Panel Controls

    FRONT PANEL: UP position (Orange.) If you don’t have a footswitch available, the Channel Switch located on the Rear Panel ( far left end of panel if facing front of amp ) will activate this switching procedure. Before we get intimate with each control, let’s audition the two channels with a basic clean setting in the Vintage Orange ( Rhythm Channel ) and a fairly high gain overdriven sound in the Modern Red ( Lead Channel.) First remove the protective covers from the tubes...
  • Page 7: Gain / Treble / Middle

    CONTROLS: Like most amplifiers, the GAIN Control in each channel determines it’s sensitivity and overall tonal characteristics. It GAIN: meters the amount of Gain (volume) that your guitar signal will produce. In both the DUAL and TRIPLE RECTIFIER Solo Heads, we paid special attention to the amount and frequencies of Gain REGIONAL TITLES present in each Mode, making sure the whole range of available Gain is ARE THE SAME FOR BOTH GAIN...
  • Page 8 The Controls: (Continued) 2.) GAIN - In conjunction with the Tone Controls - Basically, a simple rule applies...as the Gain is increased the Tone control string has less and less effect on the signal until at 5:00 the signal is so saturated that you are getting mostly Gain and very little Tone. Again, this is the reason we suggest using the GAIN Control in its middle region.
  • Page 9: Bass / Presence

    The Controls: (Continued) These are controls that work in the power section to reduce attack and brightness. They work on a different PRESENCE: frequency than the TREBLE Control, and depending on the Mode chosen, and the amount of Gain dialed up, can sound higher or lower than the Treble frequency.
  • Page 10: Master And Loop Active Master

    The Controls: (Continued) A simple control found on most amps today, these serve to balance the playing level of the two channels. They MASTER: enable the pre-amps GAIN Control to be used in a wide range of settings, while never having to affect the listening level. On both the DUAL and TRIPLE RECTIFIER Solo Heads these Masters serve another purpose as well.
  • Page 11 FRONT PANEL SWITCHES: This switch delivers the A.C. power to these two RECTIFIER Solo Heads. Make sure the unit is grounded (all POWER / ON three terminals of the A.C. power cord must be connected whenever possible to avoid injury to the user as well as to the unit) and that the proper voltage is present.
  • Page 12: Fuse

    REAR PANEL: SET TO ORANGE SEND ORANGE CHANNEL GAIN SEND LEVEL CHAN. 4A SB BIAS SWITCH AUTO WHEN USING BYPASS FOOTSWITCH OR LOOP 16 OHM 8 OHM 4 OHM 4 OHM VARIABLE CLEAN EXT. SWITCH EL-34 FUSE HIGH GAIN LOOP ON ORANGE AUTO ORG &...
  • Page 13: Bias Switch

    sound in the Rhythm channel that was previously unavailable in all but the best vintage RECTIFIER SELECT (Continued) amps. If you are like most of the players we know, you'll probably end up leaving your RECTIFIER Solo Head, DUAL or TRIPLE set to the Vacuum Tube position all the time.
  • Page 14: Send Level Control

    REAR PANEL: (Continued) NOTE: We suggest that when using the power section only of either the DUAL or TRIPLE RECTIFIER Solo Head, that you have the amp switched to the Vintage Orange channel and the Channel Cloning switch set to 'Normal'. This assures a more neutral power sensitivity thus making both versions more friendly to use as a power amp.
  • Page 15: External Switch Jacks

    (Continued) may need to remove the 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 16: Factory Sample Settings

    FACTORY SAMPLE SETTINGS Clean Orange Channel Gain: Rhythm Clean SAMPLE 1 GAIN MASTER PRESENCE BASS TREBLE LOOP FT.SW INPUT ACTIVE MASTER Variable Orange Channel Gain: High Gain Purring Blues SAMPLE 2 GAIN MASTER PRESENCE BASS TREBLE LOOP FT.SW INPUT ACTIVE MASTER Orange Channel Gain - Variable High Spongy or Bold...
  • Page 17: Personal Settings Sheet

    PERSONAL SAMPLE SETTINGS Power Section: SAMPLE 1 GAIN MASTER PRESENCE BASS TREBLE LOOP FT.SW INPUT ACTIVE MASTER SAMPLE 2 Power Section: GAIN MASTER PRESENCE BASS TREBLE LOOP FT.SW INPUT ACTIVE MASTER SAMPLE 3 Power Section: GAIN MASTER PRESENCE BASS TREBLE LOOP FT.SW INPUT...
  • Page 18: Tube Description & Task Charts

    PERSONAL SAMPLE SETTINGS Power Section: SAMPLE 1 GAIN MASTER PRESENCE BASS TREBLE LOOP FT.SW INPUT ACTIVE MASTER SAMPLE 2 Power Section: GAIN MASTER PRESENCE BASS TREBLE LOOP FT.SW INPUT ACTIVE MASTER SAMPLE 3 Power Section: GAIN MASTER PRESENCE BASS TREBLE LOOP FT.SW INPUT...
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  • Page 21: Tube Noise & Microphonics

    You may occasionally experience some form of tube noise or microphonics. Certainly no TUBE NOISE & MICROPHONICS cause for alarm, this quirky behavior comes with the territory and the Tone. Much like changing a light bulb, you don’t need a technician 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...by simply swapping out a pre-amp or power tube! First may we suggest that you set the amplifier up on something so that you can get to the tubes comfortably without having to bend...
  • Page 22: Bias Adjustment: A Feature Article By Randall Smith

    Because your amplifier is an all tube design, it is quite possible that you will at DIAGNOSING PRE-AMP TUBE PROBLEMS: 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 23 BIAS ADJUSTMENT: (Part of a continuous series) BEAM- CONFINING An Article written by Randall Smith that ELECTRODE CATHODE we thought you might find interesting. GRID ..SCREEN . . . GRID .
  • Page 24 Voltage and current are NOT the same. Current is the AMOUNT of electricity, the “quantity” BIAS ADJUSTMENT (Continued) — 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 25: Speaker Impedance 7 Possible Hook-Up Schemes - Amplifier To Speaker Cabs

    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? Next time we’ll talk about our part in developing the great Sylvania STR 415 type 6L6 and how we’re on the verge of seeing...
  • Page 26 MESA/Boogie amplifiers can handle 4 and 8 ohms effectively. Never run below 4 ohms in a tube amplifier unless you are abso- lutely 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 27 SPEAKER IMPEDANCE MATCHING & HOOK-UP GUIDE: (Continued) When wiring in parallel, the resistance of the speakers decreases. Two 8 ohm speakers wired in ( hooked-up ) PARALLEL: 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.
  • Page 28 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 29 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 30 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 31: Triodes, Pentodes & Irishmen: A Feature Article On The Workings Of Tubes

    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 32 ON TRIODES, PENTODES & IRISHMEN: A look into the inner workings of the Vacumm Tube 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 33 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 operation, the traffic flow is similarly unimpeded and uni-directional toward the bar and this process rectifies the work-day negativity.
  • Page 34: Part Sheets

    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.
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  • Page 37 OOGIE The Spirit of Art in Technology Thank you for trusting MESA/Boogie to be your amplifier company and we wish you many years of toneful enjoyment from this handbuilt all tube instrument.
  • Page 38 The Spirit of Art in Technology (707) 778-6565 FAX NO. (707) 765-1503 1317 Ross Street Petaluma, CA 94954...

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