Mesa/Boogie MARK 1 owner manual Mark

Page 12

MARK I

TUBE TASK CHART

NOTE: Before changing tubes, flip the POWER SWITCH to the off position or to STANDBY.

CAUTION: Tubes are HOT when they have been in use.

 

 

Partial View Of Chassis

 

 

 

 

 

 

 

 

 

 

 

12AT7

12AX7

12AX7

12AX7

 

 

 

 

 

 

 

 

 

 

B

GRAY

REVERB

WHITEV

A

B A

B A

B A

4

V 3

V 2

V 1

B A

(Each 12AX7 contains two separate Triodes)

V 5

12AX7

6L6

6L6

6L6

6L6

PAGE 8

( View from above - looking down on chassis )

REAR OF CHASSIS

 

Description of Tube Functions

 

V1 A = Input 1 - Stage 1

V4 A =

Reverb Drive

V1 B = Input 2 - Stage 1

V4 B =

 

V2 A = FX Return Stage

V5 A =

Phase Inverter

V2 B = Final Pre-Amp Stage

V5 B =

 

V3 A = Tone Control Recovery Amp

V3 B = Reverb Return Stage

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Contents Mark 1 RE -ISSUE Hello from the Tone Farm MK-1 Precautions & Warnings Mark 1 Operating Instructions OverviewFront Panel Front Panel Warm tone and spongy, elastic feel Rear Panel Rear Panel Amp Mark Personal Sample Settings Sheet Tube Maintenance & Microphonics Diagnosing Power Tube ProblemsTube Noise Diagnosing PRE AMP Tube Problems What is MY Cabinets Impedance Speaker Impedance Matching & HOOK-UP GuideMIS-MATCHING SeriesParallel Combination of Series & ParallelWiring SCHEMES...Amplifier to Speaker Cabinets Wiring SCHEMES...Amplifier to Speaker Cabinets Wiring SCHEMES...Amplifier to Speaker Cabinets Safe Mismatch Screen Bias Adjustment Cheers Randall Smith Designer and President On TRIODES, Pentodes & Irishmenn Triodes PentodesPage Mark Mesa Boogie Spirit of Art in Technology

MARK 1 specifications

The Mesa/Boogie MARK 1 is an iconic guitar amplifier that has significantly influenced the world of music since its introduction in the late 1960s. Designed by Randall Smith, the MARK 1 was one of the earliest examples of a high-gain, boutique-style amplifier, aimed at offering guitarists a versatile tool for achieving rich tones across various genres.

One of the standout features of the MARK 1 is its innovative preamp design, which utilizes multiple gain stages to produce a wide range of tonal options. This allows players to achieve everything from sparkling clean sounds to aggressive, saturated overdrive. The two-channel configuration—clean and lead—enables users to switch effortlessly between different sounds, making it a favorite among performers looking for adaptability in their rig.

The MARK 1 is also equipped with a powerful EQ section, featuring a 5-band graphic equalizer that grants further control over tonal shaping. This level of customization is rare in amplifiers of its time, allowing musicians to tailor their sound to perfection, whether in the studio or on stage. The “Fat” switch adds additional low-end response and gain, enhancing the amp's overall character and making it suitable for heavier genres.

Another hallmark of the MARK 1 is its compact design, which was revolutionary at the time. Weighing significantly less than traditional tube amplifiers, the MARK 1 was constructed with portability in mind, making it easy for gigging musicians to transport. This combination of power and portability made the MARK 1 a popular choice for artists across various genres, from rock to blues and jazz.

The MARK 1, like many of Mesa/Boogie’s offerings, is built with high-quality components, ensuring durability and reliability. The use of premium tubes in the power section contributes to its dynamic response and harmonic richness, vital for expressive playing.

Overall, the Mesa/Boogie MARK 1 is more than just an amplifier; it's a landmark in guitar amplification technology. With its versatility, compactness, and powerful tone-shaping capabilities, the MARK 1 paved the way for future amplifiers and continues to be revered by musicians around the world for its outstanding performance and timeless sound. Whether performing live or recording in the studio, the MARK 1 remains a trusted companion for guitarists seeking to explore the full spectrum of their musical expression.