Mesa/Boogie Mark IV Amplifier manual Mesa Boogie

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MESA BOOGIE

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.

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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 Gain Pull BrightRhythm 1 Treble R1 + R2 Bass & R1 + R2 MIDR1 Master R1 PresenceRhythm 2 Gain & FAT Setting the Lead Mode Lead Gain Rhythm 2 TrebleR2 Presence R2 MasterLead Gain Lead TrebleLead Bass & Lead MID Lead DriveLead Presence & Lead Master Lead BrightGraphic EQ Silent Recording Pull Switch Graphic EQOutput Level StandbyInternal circuitry ReceptacleFuse Reverb & Reverb Footswitch EQ Rocker SwitchSatellite Control EQ & Send Jack Due to cable length or impedance mismatchingRecording OUT when feeding a p.a. board Triode / Pentode SwitchEffects Loop Section Recording OUTHarmonics / MID Gain Switch SIMUL-CLASS / Class a SwitchPower Tube Substitution Speaker Jacks Power Tube SubstitutionSide while pulling gently downward External Switching Jacks Going StereoMark Mark IV Personal Settings Power Tube Substitution Tube Noise & Microphonics Diagnosing Power Tube FailuresTube Noise 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