Fuse; Rectifier Select; Rear Panel - Mesa/Boogie Dual & Triple Rectifier Solo Heads Owner's Manual

REAR PANEL:

SET TO ORANGE
ORANGE CHANNEL GAIN
WHEN USING
FOOTSWITCH OR
VARIABLE
CLEAN
EXT. SWITCH
HIGH GAIN
ORANGE
EXTERNAL
SWITCHING
NORMAL
ORIG TO
RED TO
MODERN
VINTAGE
RED
CHANNEL
CHANNEL STYLE SELECT
SELECT
POWER: SPONGY & BOLD
Heads are equally important when looking for a particular sound. 'Spongy' works like a built in Variac, reducing all the internal
POWER
SPONGY BOLD
in the up position, maximum power, clean headroom and volume are obtained.
This is the A.C.'s (Alternating Current) main fuse and provides protection from outside A .C. fluctuations as well as power

FUSE:

tube failure damage. Should the Fuse blow, replace it with the same rating in a Slo-Blo type package. The domestic U.S. version
requires a 4 amp Slo-Blo fuse. A power tube short or failure is often the cause of a blown fuse...Follow the cold start procedure
4A SB
FUSE
120 VOLTS
60 Hz
2A
4 AMPS
POWER
SPONGY BOLD

RECTIFIER SELECT:

different sounds and feel. It first appeared on our DUAL RECTIFIER Solo Head and is, in fact, part of the magic behind the
RECTIFIER SELECT
VACUUM SILICON
TUBES DIODES
(NORMAL) (HI POWER)
SILICON DIODE: (Hi Power) calls up the silicone diode rectifiers offering more punch, a tighter attack with added brightness and
substantially more headroom. This would be the preferred position for loud clean playing or tight rhythmic playing with a high front
end Volume setting (high gain.)
VACUUM TUBE: (Normal) position takes a power section walk down memory lane, paying tribute to those vintage gems of yesteryear.
In those early days of amplification, the only rectifiers available were tubes. Unbeknownst to their creators, these sweet sounding
amplifiers would someday become relics as the demand for higher volumes and more power per package led to the abandonment
of the tube rectifier in favor of the five cent silicone diode's greater efficiency. With this decision went much of the sweetness and
soul, and by the mid 70's, many amps were bold, loud, and efficient, and unfortunately...sometimes lacking some of that earlier soul.
We wanted the Dual Rectifier series to capture that... 'thing' that you... 'can't quite put your finger on...but you know it when it's got
it.' Soul, Personality and Feel. The Vacuum Tube position gives you a sweetness of sound and a liquid feel that simply cannot be
duplicated in any other way. This position shines for single note lead work in either channel and delivers a warm, breathing clean
CHAN.
16 OHM 8 OHM 4 OHM 4 OHM
SPEAKERS
HAND BUILT IN PETALUMA CA.
LOOP
The two different power selections of both the DUAL and TRIPLE RECTIFIER Solo
voltages for a true vintage feeling and that extraordinary 'brown sound.' Power is reduced somewhat
too, making it easier to achieve an overdriven power sound, especially when the Rectifier Select switch
is in the Vacuum Tube position. Using either RECTIFIER Solo Head in this power setting will also
extend tube life and overall reliability, while still producing enough power to work many of your gigs...and
all of your recording needs! With either the DUAL or TRIPLE RECTIFIER'S Power Select Switch
mentioned in the ON/STANDBY switch section and watch the power tubes as you flip the STANDBY to
the ON position. If a power tube is going bad or is arcing you will see it! Flip the STANDBY switch to
Standby immediately and replace the faulty power tube and the fuse if necessary. If you see nothing
abnormal as you lift the STANDBY switch, it is possible that a power tube shorted temporarily and blew
the Fuse. If this is the case it may work again normally. To be extra safe, you might want to replace just the
adjacent tube or all power tubes in the 'shotgun' troubleshooting tradition and save the replaced set as
spares. Spare fuses are a must for the fabled cord bag along with your spare tubes. Always carry both for
they could be worth their weight in gold someday.
This patented switchable feature allows you to select between two different types of rectifiers for
whole Dual Rectifier series of amplifiers. It has since found its way into some of our other products
as well, such as the MAVERICK, HEARTBREAKER and the BLUE ANGEL. Voodoo and
versatility have been added to these products by the inclusion of this cool, patented feature.
ORG
SEND LEVEL
AUTO
EXT BYPASS
LOOP
SW
LOOP ON
RED
AUTO ORG & RED
SLAVE LEVEL
LOOP SELECT
IMPORTANT: First, set sounds with
Loop Bypassed. Then set Send,
Mix & Loop Active Master (front) to
50% for unity gain. Loop on, adjust
Send to match FX use Loop Master
100% 0%
as return level & live volume
SLAVE OUT
control, set Mix for effect depth. MIX LEVEL
PAGE 8
SEND
BIAS SWITCH
EL-34
6L6
RECTIFIER SELECT
VACUUM
CAUTION
TUBES
(NORMAL)
BIAS SETTING
MUST MATCH
RETURN
TUBES IN USE
4A SB
FUSE
120 VOLTS
2A
60 Hz
4 AMPS
SILICON
POWER
DIODES
(HI POWER)
SPONGY BOLD