Owner`s manual

PAGE 1
Overview:
Congratulations and Thank You for your purchase of the 2:50 Stereo Power Amplifier! Inside this clean, compact,
two rack-space unit is a true guitar amp that’s unabashedly aggressive! Looking for raw punch? Guitar tone coloration? Power tube over-
drive at manageable levels? You’ll find it here. The 2:50 power amplifier proves once again that killer tones can come in small packages.
At fifty watts per side, it’s perfect for small to mid-sized rack systems and is especially well suited as a companion to any one of our all
tube Mesa/Boogie pre-amplifiers, such as the Rectifier Recording Preamp or the TriAxis Programmable Preamp..Just add
a pair of Boogie one-twelve cabinets and you’ve got an all-tube, stereo guitar system that can fit inside a compact car ( and a compact
budget! ) without sacrificing that “old world soul” that’s built into every Mesa/Boogie! Best of all, this all tube circuit enhances your playing
by responding with a fluid “thickness” that actually helps you play better and enjoy your playing more.
Another feature that gives the 2:50 its unique personality is a three tube 12AX7 front end with active Presence circuits conveniently ac-
cessed by knobs on the Front Panel. This crucial stage brings out the special harmonics that distinguish a real guitar amp from a “hi-fi”
amp. The PRESENCE Controls let you “cut through” with a bold, brash “top end”, or round off that top for a warmer tone. Fan Cooled and
full of tone, the 2:50 is a high value favorite.
At some point please take some time and read all the operating instructions and safety precautions. Also included in this owner’s manual
are various wiring schemes and cabinet hook-ups, as well as some suggestions on how to use your new 2:50 in a rack format along with
various types of effects. Enjoy!
FRONT VIEW:
2:50
ON
POWER
ON
STANDBY
PRESENCE A
PRESENCE B
CHANNEL A
CHANNEL B
4 OHM
8 OHM
INPUTS B
REAR VIEW:
2:50
F
U
S
E
F
U
S
E
INPUTS A
GROUND
SWITCH
LIFT
GROUND
BIAS
SWITCH
6L6
EL34
MUST MATCH TUBES SEE OWNERS BOOK
POWER FUSE
4A
SLO
BLO
120 V~
60 Hz
4 A
CHAN. B CHAN. A
8 OHM
4 OHM
SPEAKERS
SPEAKERS
WARNING: To reduce risk of fire or electric
shock, replace fuse with same type and
rating only. Do not expose this unit to
rain, moisture or thieves.
CAUTION: To reduce risk of fire or electric
shock, do not remove cover. No user-
serviceable parts inside. Refer all
servicing to qualified personnel.