Mesa/Boogie Mark IV Amplifier Reverb & Reverb Footswitch, EQ Rocker Switch, Effects Loop Section

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REAR VIEW MKIV (Continued)

REVERB & REVERB FOOTSWITCH:

REVERB is a simple

depth control which activates the rich all-tube, three-spring analog circuitry. Even though many players have more modern digital reverbs and delays, there is still something quite pleasant about this natural-sounding,

REVERB

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GRAPHIC EQ

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ON OFF AUTO R2

REMOTE

 

REV FTSW.

SATELLITE

SATELLITE EQ

 

 

SIG.

 

PATH

SATELLITE SEND

traditional Reverb system that we think you’ll enjoy. The REVERB effect may seem more intense in some modes (such as RHYTHM 1) than in other modes, because each mode has a slightly different EQ character- istic and attack dynamic. This represents normal REVERB operation and is no cause for concern.

The 1/4" jack on the Rear Panel labeled REV FTSW. (as shown in the illustration) allows you control of the REVERB remotely when the (optional) Mesa/Boogie REVERB footswitch is connected. See your nearest Boogie Pro Center for this item or call us directly we’ll be happy to assist you.

EQ ROCKER SWITCH:

This feature was explained earlier in the Graphic EQ section of this manual. Refer back to it if you need help understanding what the function of this switch is.

FUSE

3A SB

117VOLTS 60 HZ

4 AMPS

REVERB

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GRAPHIC EQ

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ON OFF AUTO R2

REMOTE

 

REV FTSW.

SATELLITE

SATELLITE EQ

 

 

SIG.

PATH

SATELLITE SEND

SATELLITE CONTROL: EQ & Send Jack

Mesa/Boogie offers two different Satellite companion amplifers that enable you to either reinforce your already amazing tone, or split

and process the signal using the Effects Loop. A simple 60 watt version called the Satellite Sixty, as well as a 75 watt Simul-Class with

 

 

 

 

 

 

 

 

 

 

 

 

Graphic EQ make up this supportive duo with the Simul-Satellite being the obvious

 

 

 

 

 

 

 

 

 

 

 

 

choice for most MARK IV owners. In the popular stereo scheme, a processors’ Out-

 

 

 

 

 

 

 

 

REV FTSW.

 

 

 

5

 

2

 

 

 

puts feed the two Returns ( Left and Right ) on the MARK IV’S Rear Panel and the

 

 

 

 

 

 

 

 

 

FUSE

REVERB

 

43

 

 

 

 

 

 

 

Left Return is then sent on to the matching Satellites’ Input via the Satellite Send jack.

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3A SB

 

 

 

 

 

 

 

 

 

 

 

This buffered line may then travel across the stage with little or no tonal degradation

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GRAPHICEQ

 

 

 

 

 

SATELLITE

 

 

 

 

4 AMPS

 

 

 

 

 

 

 

SIG.

due to cable length or impedance mismatching.

117 VOLTS

 

 

 

 

 

 

 

SATELLITE EQ

50-60 HZ

 

 

 

 

 

 

 

 

 

 

 

 

 

ON OFF

 

AUTO R2

 

 

 

 

The MARK IV has the ability to control the Simul-Satellite’s Five Band EQ remotely

 

 

 

PATH

 

 

REMOTE

 

 

 

 

 

 

 

 

SATELLITE SEND

 

 

 

 

 

 

 

 

 

 

 

 

and automatically - tracking the auto assign function and the Footcontroller choices as

 

 

 

 

 

 

 

 

 

 

 

 

they are used aboard the MARK IV. In this way every nuance and setting of the master amp is relayed to the slave amp creating a truly awesome spread tonally and dynamically.

EFFECTS LOOP SECTION:

This section of the MARK IV is quite sophisticated, offering two LOOPS and a selector switch. The LOOP labled NORMAL stays on

all the time. The other LOOP is switched IN or OUT of the circuit by either the footswitch, the programming rocker switches or the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

external jacks (when the MARK IV is being controlled by a MIDI switcher). Notice that if the switchable

 

 

FX LOOP ON

 

AUTO

 

AUTO

LOOP is turned on by the rockers or the external jack, the footswitch cannot turn it back off. Two rocker

 

 

 

 

 

 

FULL TIME

 

RHY 1

RHY 2

switches are provided so you can pre-set the LOOP to come on in conjunction with any one or two modes.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(If an effect is desired on all three modes, use the NORMAL LOOP.) The LOOPS were designed in this way

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FX LOOP

 

RHY 2

 

LEAD

 

 

 

 

 

so you can automatically have your effects in when selecting, say, RHYTHM 1 and/or RHYTHM 2, yet still

 

 

 

LEFT

 

 

 

 

 

RIGHT

 

 

SWITCHING

AUTO ASSIGN SWITCHES

 

 

 

 

(STEREO)

 

 

 

 

 

(MONO)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SIG.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PATH

 

 

 

 

 

FX SEND

 

 

 

 

 

 

 

RETURN

 

 

 

 

 

RETURN

 

PAGE 10

Image 14
Contents Mark Hello from the Tone Farm Mark IV Table of Contents USE Common Sense and Always Observe These Precautions Markk Front Panel Rhythm 1 Treble Rhythm 1 GainPull Bright R1 + R2 Bass & R1 + R2 MIDRhythm 2 Gain & FAT R1 PresenceR1 Master R2 Presence Setting the Lead Mode Lead GainRhythm 2 Treble R2 MasterLead Bass & Lead MID Lead GainLead Treble Lead DriveGraphic EQ Lead BrightLead Presence & Lead Master Output Level Silent Recording Pull SwitchGraphic EQ StandbyFuse ReceptacleInternal circuitry Satellite Control EQ & Send Jack Reverb & Reverb FootswitchEQ Rocker Switch Due to cable length or impedance mismatchingEffects Loop Section Recording OUT when feeding a p.a. boardTriode / Pentode Switch Recording OUTPower Tube Substitution SIMUL-CLASS / Class a SwitchHarmonics / MID Gain Switch Side while pulling gently downward Power Tube SubstitutionSpeaker Jacks External Switching Jacks Going StereoMark Mark IV Personal Settings Power Tube Substitution Tube Noise Diagnosing Power Tube FailuresTube Noise & Microphonics Diagnosing PRE-AMP Tube Problems Here’s a question we often hear Bias Adjustment Cheers Randall Smith Designer & President Front View Mark Mesa Boogie 707 778-6565 FAX no

Mark IV Amplifier specifications

The Mesa/Boogie Mark IV amplifier stands as a landmark in the world of guitar amplification, boasting a rich history that intertwines with the evolution of rock music. Launched in the 1990s, the Mark IV embodies the hallmark traits of Mesa/Boogie’s innovative spirit, delivering versatility, power, and an extensive range of tonal options.

At the core of the Mark IV is its three-channel configuration, which includes Clean, Rhythm, and Lead channels. Each channel offers varying degrees of distortion and gain that can be tailored to the player's distinct preferences. The Clean channel produces a pristine sound, ideal for jazz or blues, while the Rhythm channel steps up with a compelling crunch for rock tones. The Lead channel takes it further, providing a high-gain saturation, perfect for heavier genres. The ability to switch seamlessly between these channels enables musicians to transition effortlessly during performances.

One notable feature of the Mark IV is the onboard graphic equalizer. This 5-band EQ allows guitarists to sculpt their sound intricately, enhancing or attenuating frequencies to achieve a desired tone. Coupled with its patent-pending Gain structure, the amp provides an unparalleled range of tonal shaping ability, making it a favorite among professionals and hobbyists alike.

The Mark IV also benefits from the innovative Dyna-Watt technology. This feature ensures that players can harness full power from the amp, regardless of volume levels. Dyna-Watt adjusts the output stage to produce dynamic responsiveness, allowing for a richness of sound that stands out without needing excessive volume. This feature is particularly useful for studio recording and smaller venues, where loud amplification can be an issue.

Mesa/Boogie amplifiers are renowned for their build quality, and the Mark IV is no exception. Crafted with precision, it features a rugged chassis and high-quality components designed to withstand the rigors of touring. The amp’s tube-driven design, utilizing powerful 6L6 or EL34 tubes, contributes to its warm tone and dynamic response, appealing to a wide array of musicians.

In conclusion, the Mesa/Boogie Mark IV amplifier is a cornerstone piece of gear for guitarists seeking a powerful, versatile, and richly infused tonal experience. With its three-channel architecture, graphic equalizer, Dyna-Watt technology, and robust construction, it meets and exceeds the demands of contemporary musicians across genres. Whether on stage or in the studio, the Mark IV remains a potent tool for expression, earning its place in the pantheon of iconic amplifiers.