OOGIEBMESA1317 Ross Street Petaluma, CA 94954 USAThe Spirit of Art in Technology MARK IVOwner’s Manual
There are also some great singing, slightly distorted sounds that come from low settings of Gain and Drive with FAT pushed in. “Onsetof Clip” and “thr
PAGE 7The importance of this switch is a must to understand. At low to medium playing volumes, the LEAD BRIGHT adds desirable sizzle,and gain in the h
EQ back out of the circuit, the straight tone sounds to flat. Don’t worry! It’s just “hearing hangover”. All the MARK IV’s modes weredeveloped without
PAGE 9The MARK IV uses a removable I.E.C. type power cord to supply the A.C. power. The power cord supplied with your unit shouldbe used whenever p
PAGE 10REVERB is a simple depth control which activates the rich all-tube, three-spring analog circuitry. Even though many players havemore modern dig
PAGE 11be able to footswitch in the effects mid-way through a LEAD mode solo, for example. Remember that the MASTERS double as effectssend controls an
This switch selects between two-tube and four-tube operation in the power section. In the CLASS A position, only the two end powertubes are active, pr
PAGE 13ohm speaker should be plugged into the 4 ohm jack. However, please note that Mesa/Boogie cannot accept responsibility forany blown 6V6’s incur
PAGE 14REAR VIEW MKIV (Continued)EXTERNAL SWITCHING JACKS:POWER AMPTRIODE SIMUL-CLASS HARMONICSPENTODECLASS ASPEAKERS8 OHM4 OHM4 OHMMID GAINLEAD VOIC
PAGE 15PULL SHIFTPULL SHIFTPULL BRIGHTMASTERSLEAD GAIN RHY2 GAINR1+R2 MIDLEAD MIDR1+R2 BASSLEAD BASSR1 TREBLELEAD TREBLERHY1 GAININPUTPULL BRIGHTINSTR
Hello from the Tone Farm...YOU, the smart player and all around intuitive human, have put your trust in us tobe your amplifier company. This is somet
PAGE 16PULL SHIFTPULL SHIFTPULL BRIGHTMASTERSLEAD GAIN RHY2 GAINR1+R2 MIDLEAD MIDR1+R2 BASSLEAD BASSR1 TREBLELEAD TREBLERHY1 GAININPUTPULL BRIGHTINSTR
PAGE 17Description of Tube FunctionsV1A= Input StageV1B= Tone Recovery Stage (post tone controls)V2A= Third Gain Stage (Rhythm Modes) and Fi
PAGE 18You may occasionally experience some form of tube noise or microphonics. Certainly no cause for alarm, this quirky behavior comeswith the terri
PAGE 19Because your amplifier is an all tube design, it is quite possible that you will at some point experience minor pre-amp tube noise. Restassure
PAGE 20NOTE: An article written by Randall Smith that we thought you might find interesting.Here’s a question we often hear:“Wh
PAGE 21And that’s right. Tubes don’t effect the bias setting, but the bias setting does effect how the tubes work. But how it effects the tubes isdiff
Some newer amps have LED indicators connected to the circuit which will turn on when the right threshold of current flow has beenreached. This is an
REAR VIEW: MARK IVPULL SHIFTPULL SHIFTPULL BRIGHTMASTERSLEAD GAIN RHY2 GAINR1+R2 MIDLEAD MIDR1+R2 BASSLEAD BASSR1 TREBLELEAD TREBLERHY1 GAININPUTPUL
The Spirit of Art in Technology OOGIEBMESAThank you for trusting MESA/Boogie to be your amplifiercompany and we wish you many years of toneful enjoyme
The Spirit of Art in Technology 1317 Ross Street Petaluma, CA 94954USA (707) 778-6565 FAX NO. (707) 765-1503
Table of ContentsMARK IVPRECAUTIONSOVERVIEW_____________________________ 1FRONT PANEL:POWER-UP ____________________________ 2CONTROLS:RHYTHM 1 GAIN __
Your MESA/Boogie Amplifier is a professional instrument. Please treat it with respect and operate it properly.USE COMMON SENSE AND ALWAYS OBSERVE THE
Operating InstructionsMARK IVMARK IVCongratulations for choosing the MARK IV as your new musical voice. You have purchased a handbuilt instrument of
First familiarize yourself with the layout of the Front Panel and plug in the FU-3 footswitch which is located on the underside of thechassis towards
PAGE 3Setting the RHYTHM 1 mode adjusts the input sensitivity for the clean RHYTHM mode. With most guitars, this mode stays clean untilaround 8 where
This control adjusts frequencies higher than those found on the TREBLE control. There are so many different sounds that RHYTHM1 can produce, you must
This control along with RHYTHM 2’s PRESENCE control should be worked with together to produce the desired gain and brightnessof the mode. Setting the
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