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Congratulations on your choice of the
M-Pulse WalkAbout
Bass Amplifier! This compact and powerful little brother to the
M-Pulse
600
and
360
delivers all the tone and most of the features in a package thats bound for the open road.
At the heart of this giant killer is a robust 300 watt
Simul-State
power section that will handle most clubs and smaller venues with
surprising headroom. This tube driven mosfet design combines the best qualities of both tube and solid state technology to achieve a
lightweight, reliable platform that is supremely musical. This toneful power is metered out with the MASTER control, and can be used
to drive any two speaker cabinets via the two SPEAKER OUTPUT jacks, with a combined overall load of 4 Ohms being the preferred
impedance. Should you find yourself in larger venues, an XLR Balanced Direct output with a convenient Front Panel DI LEVEL control
enables you to send your choice of pre or post signals to the board for Front Of House reinforcement.
The
WalkAbout
Preamp is a four stage, all-tube, finely-tuned instrument of shaping power for bass. The signal path begins with the
Input jacks and both ACTIVE and PASSIVE instruments have been provided for with a dedicated jack. The front end GAIN control
determines the amount and color of preamp signal and/or drive you wish to push through the rotary Tone Controls. Active shelving
PAGE 1
Operating Instructions
INSTRUMENT
INPUTS
PASSIVE
ACTIVE
ON
POWER
E N G I N E E R I N G
GAIN BASS MID
FOUR - STAGE VACUUM TUBE PREAMPLIFIER
S I M U L S T A T E B A S S A M P L I F I E R
TM
0 db 0 0
60 Hz 340Hz 2K
PARAMETRIC EQUALIZER
30 300 200 2K 1.2K 12K
-15 + - + - +15
TREBLE DI LEVEL MASTER
FRONT VIEW: WalkAbout
CAUTION
:
Unplug power
before removing fuse or
bolts holding chassis
POWER FUSE
6A
SLO
BLO
120 V~
60 Hz
6 A
F
U
S
E
F
U
S
E
GROUND
LIFT
DIRECT OUT
POST
PRE
EFFECTS LOOP
WARNING
:
To reduce risk of fire or
electric shock, replace fuse with
same type and rating only. Do not
expose this unit to rain or moisture.
WARNING
:
To reduce risk of fire or electric
shock, Do not remove cover. No user-
serviceable parts inside. Refer
servicing to qualified personnel.
SPEAKER OUTPUT
SUGGESTED LOAD
RETURN SEND
4 OHMS
REAR VIEW: WalkAbout
SIMUL STATE BASS AMPLIFIER
TUBE DRIVEN-MOSFET POWER
HANDBUILT IN PETALUMA , CALIFORNIA
M-PULSE
TM
WALKABOUT
E N G I N E E R I N G