Rectifier Select; Power: Spongy & Bold - Mesa/Boogie Three Channel Dual & Triple Rectifier Solo Heads Owner's Manual

REAR PANEL:
BIAS SWITCH:
(Continued)
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. ALWAYS CHECK THE BIAS SWITCH setting if
you experiment with alternate tube types and you will enjoy uninterrupted performances from your amplifier.

RECTIFIER SELECT:

different sounds and feel. It first appeared on the Dual Rectifier Solo Head and is, in fact, part of the magic behind the 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
SWITCH RECTIFIER
EL-34
CAUTION
SILICON
VACUUM
SPONGY
BIAS SETTING DIODES
TUBES
MUST MATCH
( NORMAL ) ( HI POWER )
TUBES IN USE
BEST TO USE TUBE RECTIFIER WITH EL-34s
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 late 60's, most 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 Channels 2 and 3 and delivers a warm, breathing sound
in the RAW and VINTAGE modes that was previously unavailable in all but the best vintage 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. Regardless of your preference the RECTIFIER SELECT feature gives you options that you
won't find anywhere else.
NOTE: On the Dual Solo Head it is possible to run two 6L6 or EL34 tubes pulling the two center tubes, leaving far left and far right
tubes intact. This procedure reduces the power by approximately 50%. Remove one of the Rectifier tubes if you are using the TUBE
RECTIFIER setting to assure a correct match.
POWER: SPONGY & BOLD
equally important when looking for a particular sound. "SPONGY" works like a built in Variac, reducing all the internal voltages for a
RECTIFIER POWER
VACUUM SILICON
TUBES DIODES
SPONGY BOLD
(NORMAL) (HI POWER)
E TUBE RECTIFIER WITH EL-34s
With either the Dual or Triple Rectifier's POWER SELECT switch in the BOLD position, maximum power, clean headroom
and volume are obtained.
(Continued)
MAKE SURE THAT THE BIAS SWITCH IS SET CORRECTLY TO MATCH THE TUBE TYPE THAT
This patented switchable feature allows you to select between two different types of rectifiers for
and the Blue Angel. Voodoo and versatility have been added to these products by the inclu-
sion of this cool, patented feature.
POWER
SOLID STATE: (Hi Power) calls up the silicone diode rectifiers which offer more punch, a
tighter attack with added brightness and substantially more headroom. This would be the
BOLD
preferred position for loud clean playing or tight rhythmic playing with a high front end GAIN
setting.
The two different power selections of both the Dual and Triple Rectifier Solo Heads are
true vintage feeling and that extraordinary "brown sound." Power is reduced some-
what too, making it easier to achieve an overdriven power sound, especially when
CAUTION: Unplug power before
removing fuse or bolts
the RECTIFIER SELECT switch is in the VACUUM TUBE position.
holding chassis
Using either Rectifier Solo Head in this power setting will also extend tube life and
POWER FUSE overall reliability, while still producing enough to work many of your gigs...and all
FUSE
120 V~ 4 A
60 Hz SLO
of your recording needs!
4 A BLO
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