Mesa/Boogie Walk About Bass Amplifier Owner's Manual
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Mesa/Boogie Walk About Bass Amplifier Owner's Manual

Mesa/Boogie Walk About Bass Amplifier Owner's Manual

Mesa/boogie walk about bass amplifier owner's manual
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Summary of Contents for Mesa/Boogie Walk About Bass Amplifier

  • Page 1 OOGIE Owner's Manual...
  • Page 2 Greetings from the Home of Tone Congratulations on your choice of the WalkAbout as your Bass amplifier and welcome to the MESA/Boogie family! As a discriminating player you probably know that you have purchased the most comprehensive instrument for amplifying Bass that is available.

  • Page 3: Precautions And Warnings

    PRECAUTIONS & WARNINGS 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: WARNING: EU: permission from the Supply Authority is needed before connection. WARNING: Vacuum tube amplifiers generate heat. To insure proper ventilation always make certain there is at least four inches (100mm) of space behind the rear of the amplifier cabinet.

  • Page 4: Table Of Contents

    Precautions Overview Instant Gratification Helpful Hints FRONT PANEL: Instrument Inputs: ACTIVE & PASSIVE CONTROLS: GAIN BASS TREBLE DI LEVEL MASTER PARAMETRIC EQUALIZER FREQUENCY CONTROLS REAR PANEL: FUSE A.C. RECEPTACLE DIRECT OUT: Ground Lift - XLR Jack EFFECTS LOOP: Send & Return SPEAKER OUTPUT FACTORY SAMPLE SETTINGS PERSONAL SETTINGS PAGE...

  • Page 5: Operating Instructions

    VERVIEW Congratulations on your choice of the v 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 that’s 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...

  • Page 6: Instant Gratification

    (Continued) VERVIEW 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 any sound you can dream of can be dialed in quickly and accurately.

  • Page 7: Instrument Inputs: Active & Passive

    HELPFUL HINTS: 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 boosting desirable ones.

  • Page 8: Controls Gain

    FRONT PANEL CONTROLS: 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 and sweet.

  • Page 9: Mid

    FRONT PANEL CONTROLS: 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, ACTIVE GAIN BASS...

  • Page 10: Di Level

    FRONT PANEL CONTROLS: DI LEVEL: This rotary control determines the amount of signal present at the Rear Panel DIRECT OUT XLR jack. You 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 WalkAbout with the or an unprepared set of ears in the event you strike a big note or chord before the console input level has been set.

  • Page 11: Frequency Controls

    FRONT PANEL CONTROLS: PARAMETRIC EQUALIZER: (Continued) EQ. Don’t start boosting everything all over 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 PARAMETRIC, you go back to your starting point and think the amp is broken it’s not, your ears are suffering from an overdose of EQ.

  • Page 12: Rear Panel

    REAR PANEL CONTROLS: REAR VIEW: WalkAbout CAUTION Unplug power before removing fuse or bolts holding chassis DIRECT OUTPUT GROUND LIFT POWER FUSE WER FUSE 120 V~ 60 Hz FUSE: This is the A.C. Mains Fuse for the WalkAbout REPLACE ONLY WITH A SLO-BLO TYPE FUSE OF THE PROPER RATING. THIS IS EXTREMELY IMPORTANT, AS THE WalkAbout DRAWS A SUBSTANTIAL AMOUNT OF CURRENT AT HIGH OUTPUT LEVEL SETTINGS.

  • Page 13: Direct Out: Ground Lift - Xlr Jack

    REAR PANEL CONTROLS: DIRECT OUT: This section captures the entire pre-amp signal including the SEMI-PARAMETRIC 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 two elements to this circuit which are;...

  • Page 14: Factory Sample Settings

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  • Page 17: Tube Noise & Microphonics

    DIAGNOSING PRE-AMP TUBE PROBLEMS: You may occasionally experience some form of tube noise or microphonics. Cer- tainly no cause for alarm, this quirky behavior comes with the territory and the Tone. 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 easy it is to cure tube problems...by simply swapping out a pre-amp or power tube! First may we suggest that you set the amplifier up on something so that you can get to the tubes comfortably without having to bend...

  • Page 18: Parts Sheet

    FRONT VIEW: WalkAbout ACTIVE INSTRUMENT INPUTS GAIN BASS PASSIVE POT pt# POT pt# 593148 JACK pt# 618356 JACK pt# 618356 REAR VIEW: WalkAbout CAUTION Unplug power before removing fuse or bolts holding chassis DIRECT OUTPUT GROUND LIFT POWER FUSE WER FUS 120 V~ 60 Hz FUSE CAP...
  • Page 19 OOGIE The Spirit of Art in Technology 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.
  • Page 20 The Spirit of Art in Technology (707) 778-6565 FAX NO. (707) 765-1503 1317 Ross Street Petaluma, CA 94954 11/16/06...

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