Mesa/Boogie CALIFORNIA TWEED 6V6 4:Forty

Operating Instructions
OVERVIEW
Congratulations on your choice of the California Tweed
™
6V6 4:Forty and welcome to the MESA/Boogie
®
Family. You chose wisely
as this amplifier, though simple and straightforward in comparison to our Channel Switching multi-Channel models, represents no
less commitment to excellence, attention to detail and refinement in performance.
Fifty years in the making and looking forward to reinvent “Vintage” Tone, we’re proud to introduce this new Single Channel, mid-power,
“old school” offering aimed at all sounds Americana. Equipped with all the essential features you do need, none of the complexity
you don’t and bona fide delicious 6V6 Tone in every viable wattage with an addictive, inspiring feel guaranteed to keep you inspired
and growing musically.
In the twilight of the 1960s San Francisco Bay Area amp repairman to the Stars, Randall Smith, was inspired to start building his own
amplifiers after coming to a deep appreciation for the ‘50s Tweed circuits Leo Fender created. He loved their organic sounding voice,
powerful controls and the way they smoothly transitioned from clean to clip and back again. So standing on the shoulders of a giant,
Smith’s (and the World’s) first venture into a Boutique guitar amplifier saw the foundation built atop that wonderful, timeless sounding
preamp. Five Decades later we return to pay homage, yet also bring forward with our 50 years of experience earned hand building
high gain amps, an exciting new realm of Tweed-based performance and authentic 6V6 character.
While the traditional gain preamp on this model is relatively simple and straightforward providing the full compliment of Gain, Master,
Tone Controls and Presence, the power section is progressive in both operation and design and we feel an evolutionary step forward
in what many think of as Vintage-style amplification. The tube compliment in standard form is tried and true, appearing on Boutique
and possibly vintage Hi-Fi offerings, but what we’ve done with it is revolutionary. The update includes our Incremental Multi-Watt™
featuring Duo-Class™ and our (originally patented) Dyna-Watt™ Technology. The Incremental Power Select switch encompasses
a wide range of the most usable power levels employing different Operating Classes and Wiring Configurations for ultimate tonal
flexibility and optimum venue-matching power choices. This Incremental version of Multi-Watt is protected by 2 Active Patents and is
definitely the State of The Art in terms of taking old school Tone to new and exciting performance levels.
PAGE 1
FRONT VIEW: CALIFORNIA TWEED™ 6V6 4:FORTY
WARNING:
Unplug power before
servicing fuse or chassis
AMPLIFIER
44YV
PATENTED
7,173,488
9,917,560
GAIN
INPUT
TREBLE
MID BASS PRESENCE MASTER MULTI-WATT
™
POWER
STANDBY
ON
ON
REVERB
LOW
NORMAL
10W
2W
20W
40W
30W
120 V~
60 Hz
2.5 A
2.5 A
SLO
BLO
FUSE
POWER
TUBE GUIDE
5 x 12AX7
1 x 12AT7
4 x 6V6
VACUUM TUBE
AMPLIFIER
HAND-WIRED
IN PETALUMA,
CALIFORNIA, USA
™
CALIFORNIA TWEED
tweed
™
DUO-CLASS
™
POWER
6V6 4:40
WARNING:
Replace fuse with same type/rating only.
Do not expose to rain or moisture.
CAUTION:
Risk of Electric Shock. Do Not Open.
No user serviceable parts inside.
SEND
FUSE
RETURN REV FTSW
(USE SHIELDED CABLE)
8 OHM 4 OHM 4 OHM
SPEAKERSEFFECTS
G
A
T
E
W
A
Y
T
O
T
O
N
E
™
M
E
S
A
/
B
o
o
g
i
e
®
L
t
d
.
DYNA-WATT™ POWER
6V6 6V6
4:FORTY
™
REAR VIEW: CALIFORNIA TWEED™ 6V6 4:FORTY
WARNING:
Unplug power before
servicing fuse or chassis
AMPLIFIER
44YV
PATENTED
7,173,488
9,917,560
GAIN
INPUT
TREBLE
MID BASS PRESENCE MASTER MULTI-WATT
™
POWER
STANDBY
ON
ON
REVERB
LOW
NORMAL
10W
2W
20W
40W
30W
120 V~
60 Hz
2.5 A
2.5 A
SLO
BLO
FUSE
POWER
TUBE GUIDE
5 x 12AX7
1 x 12AT7
4 x 6V6
VACUUM TUBE
AMPLIFIER
HAND-WIRED
IN PETALUMA,
CALIFORNIA, USA
™
CALIFORNIA TWEED
tweed
™
DUO-CLASS
™
POWER
6V6 4:40
WARNING:
Replace fuse with same type/rating only.
Do not expose to rain or moisture.
CAUTION:
Risk of Electric Shock. Do Not Open.
No user serviceable parts inside.
SEND
FUSE
RETURN REV FTSW
(USE SHIELDED CABLE)
8 OHM 4 OHM 4 OHM
SPEAKERSEFFECTS
G
A
T
E
W
A
Y
T
O
T
O
N
E
™
M
E
S
A
/
B
o
o
g
i
e
®
L
t
d
.
DYNA-WATT™ POWER
6V6 6V6
4:FORTY
™