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Mesa/Boogie Walk About Bass Amplifier - page 1
OO GI E B M ESA Owner's Manual ...
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Mesa/Boogie Walk About Bass Amplifier - page 2
G r eetings from the H ome of T one Congratulations on y our choice of the W alkA bout as your Bass amplifier and welcome to the MESA/Boogie family! As a discriminating player you probably kno w that you have purchased the most compr ehensive instrument for amplifying Bass that is available. What you might not r ealize is that this entitles you to ...
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Mesa/Boogie Walk About Bass Amplifier - page 3
PRECAUTIONS & W ARNINGS Your MESA/Boogie Amplifier is a professional instrument. Please treat it with respect and operate it properly. USE COMMON SENSE AND ALWAYS OBSERVE THESE PRECAUTIONS: YOUR AMPLIFIER IS LOUD! EXPOSURE TO HIGH SOUND VOLUMES MAY CAUSE PERMANENT HEARING DAMAGE ! No user serviceable parts inside. Refer service to qualified per ...
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Mesa/Boogie Walk About Bass Amplifier - page 4
FRONT P ANEL: REAR P ANEL: Precautions 0 Overview 1/2 Instant Gratification 2 Helpful Hints 2/3 Instrument Inputs: ACTIVE & P ASSIVE 3 CONTROLS: GAIN 4 BASS 4 MID 5 TREBLE 5 DI LEVEL 6 MASTER 6 P ARAMETRIC EQUALIZER 6/7 FREQUENCY CONTROLS 7 FUSE 8 A.C. RECEPT ACLE 8 DIRECTOUT : Post / Pre - Ground Lift - XLR Jack 8 EFFECTS LOOP: Send & Retu ...
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Mesa/Boogie Walk About Bass Amplifier - page 5
OVERVIEW: Congratulations on your choice of the M-P ulse W alkA bout 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-S tate power section that will handle most cl ...
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Mesa/Boogie Walk About Bass Amplifier - page 6
P AGE 2 OVERVIEW: Continued type BASS and TREBLE controls are combined with a passive style MID to produce a powerful string of musically interactive and comprehensive tone controls. If even further tweaking is desired, we have included a 3 Band Semi-Parametric Equalizer that covers frequencies between 30Hz and 12Khz. This in-line EQ assures that a ...
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Mesa/Boogie Walk About Bass Amplifier - page 7
P AGE 3 HELPFUL HINTS: (Continued) and boost these frequencies when the control is set above 12:00. The MID works like a normal passive control and boosts a broad band of frequencies as it is increased. 5. When using the Parametric EQ keep in mind that cutting (notching) undesirable frequencies is often preferable to boost- ing desirable ones. By u ...
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Mesa/Boogie Walk About Bass Amplifier - page 8
FRONT PANEL CONTROLS: (Continued) GAIN: This control determines the overall character of the input sensitivity . The lower regions of the control (below 12:00) lend greater headroom and provide a scooped, brighter personality . The upper harmonics come through more prominently in this area of the control making the top end sound more transparent an ...
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Mesa/Boogie Walk About Bass Amplifier - page 9
FRONT PANEL CONTROLS: (Continued) MID: This is the only passive style control in the string of rotary tone controls. This scheme was chosen for its inherently musical blend and for the way the passive style midrange control, with its wide spread and smooth taper , fills in the holes . Unlike the BASS, this control is a boost only , and while it can ...
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Mesa/Boogie Walk About Bass Amplifier - page 10
FRONT PANEL CONTROLS: (Continued) DI LEVEL: This rotary control determines the amount of signal present at the Rear Panel DIRECT OUT XLR jack. Y ou will find ample gain here and should be able to dial in the appropriate amount of signal for most any live or recording console. It is a good idea to get in the habit of powering up your W alkA bout wit ...
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Mesa/Boogie Walk About Bass Amplifier - page 11
PARAMETRIC EQUALIZER: (Continued) the bandwidth and expect to have a great sound. Make small moves and then allow your ears time to adjust to the difference. With controls this powerful EQ Hangover is part of the buzz. Don't be surprised if after tweaking for an hour with the P ARAMETRIC , you go back to your starting point and think the amp i ...
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Mesa/Boogie Walk About Bass Amplifier - page 12
REAR PANEL CONTROLS: FUSE: This is the A.C. Mains Fuse for the W alkAbout REPLACE ONL Y WITH A SLO-BLO TYPE FUSE OF THE PROPER RA TING. THIS IS EXTREMEL Y IMPORT ANT , AS THE W alkAbout DRA WS A SUBST ANTIAL AMOUNT OF CURRENT A T HIGH OUTPUT LEVEL SETTINGS. AC RECEPTACLE: The removable “Euro” Style” A.C. cord that is supplied with the W alkAb ...
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Mesa/Boogie Walk About Bass Amplifier - page 13
REAR PANEL CONTROLS: (Continued DIRECT OUT: This section captures the entire pre-amp signal including the SEMI-P ARAMETRIC EQ and the EFFECTS LOOP which in turn allows you to send a Balanced signal to either a House Main Board or a Recording console. There are three elements to this circuit which are; (1) a male XLR jack, (2) a POST / PRE switch an ...
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Mesa/Boogie Walk About Bass Amplifier - page 14
P AGE 10 INSTRUMENT INPUTS P ASSIVE ACTIVE ON POWER E N G I N E E R I N G GAIN BASS MID FOUR - ST AGE 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 F ACT OR Y SAMPLE SETTINGS INSTRUMENT INPUTS P ASSIVE ACTIVE ON POW ...
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Mesa/Boogie Walk About Bass Amplifier - page 15
P AGE 1 1 INSTRUMENT INPUTS P ASSIVE ACTIVE ON POWER E N G I N E E R I N G GAIN BASS MID FOUR - ST AGE 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 INSTRUMENT INPUTS P ASSIVE ACTIVE ON POWER E N G I N E E R I N G G ...
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Mesa/Boogie Walk About Bass Amplifier - page 16
DIAGNOSING PRE AMP TUBES: Y ou may occasionally experience some form of tube noise or microphonics. Certainly no cause for alarm, this quirky behavior comes with the territory and the T one. Much like changing a light bulb, you don’t need a technician to cure these types of minor user serviceable annoyances and in fact, you’ll be amazed at how ...
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Mesa/Boogie Walk About Bass Amplifier - page 17
The Spirit of Art in Technology OO GI E B M ESA Thank you for trusting MESA/Boogie to be your amplifier company and we wish you many years of toneful enjoyment from this handbuilt all tube instrument. ...
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Mesa/Boogie Walk About Bass Amplifier - page 18
The Spirit of Art in Technology 1317 Ross Street Petaluma, CA 94954 USA (707) 778-6565 FAX NO. (707) 765-1503 ...
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