Mesa/Boogie MARK 1 manual

OO GI E B M ESA M ARK 1 R E - I SSUE Owner's Manual[...]

H ello from the T one F ar m ...Y ou, smart player and all around intuitive human, have put your trust in us to be your amplifier company . This is something we do not take lightly. B y purchasing and choosing this unit to be a part of your musical voice, you have become part of the Mesa family ...WEL C OME! Our goal is to never let you do wn. Y ou[...]

FRONT P ANEL: REAR P ANEL: Precautions Overview 1 Inputs 1 & 2 / V olumes 1 & 2 2 T reble 2 / 3 Bass 3 Middle 3 T oggle Switches 60 / 100 3 Standby Switch 4 Power / T weed Switch 4 / 5 A.C. Receptacle 5 Fuse 5 Ground 5 FX Loop & Level Control 6 Slave 6 Presence 7 Reverb 7 Speaker Jacks 7 T ube T ask Chart 8 Personal Settings Page 9 T ub[...]

PRECA UTIONS & W ARNINGS 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: YOUR AMPLIFIER IS LOUD! EXPOSURE TO HIGH SOUND VOLUMES MAY CAUSE PERMANENT HEARING DAMAGE ! No user serviceable parts inside. Refer service to qualified pe[...]

P AGE 1 VOLUME 2 MASTER VOLUME 1 BASS MIDDLE 2 5 6 7 8 1 0 10 9 3 4 2 5 6 7 8 1 0 10 9 3 4 2 5 6 7 8 1 0 10 9 3 4 2 5 6 7 8 1 0 10 9 3 4 2 5 6 7 8 1 0 10 9 3 4 POWER 60 RMS STANDBY TWEED M ARK I ON 100 RMS 1 2 TREBLE FRONT VIEW: Mk 1 2 5 6 7 8 1 0 10 9 3 4 FUSE 84 4 3A GRND SLAVE LOOP PRES REV SPKRS IN 2 5 6 7 8 1 0 10 9 3 4 2 5 6 7 8 1 0 10 9 3 4 [...]

P AGE 2 FRONT PANEL: VOLUME 2 VOLUME 1 1 2 2 5 6 7 8 1 0 10 9 3 4 2 5 6 7 8 1 0 10 9 3 4 1 2 2 5 6 7 8 1 0 10 9 3 4 2 5 6 7 8 1 0 10 9 3 4 2 5 6 7 8 1 0 10 9 3 4 2 5 6 7 8 1 0 10 9 3 4 2 5 6 7 8 1 0 10 9 3 4 2 5 6 7 8 1 0 10 9 3 4 VOLUME 2 TREBLE MASTER VOLUME 1 BASS MIDDLE 1 2 2 5 6 7 8 1 0 10 9 3 4 VOLUME 2 TREBLE MASTER VOLUME 1 2 5 6 7 8 1 0 10[...]

P AGE 3 FRONT PANEL: (Continued) 1 2 VOLUME 2 TREBLE MASTER VOLUME 1 2 5 6 7 8 1 0 10 9 3 4 BASS 2 5 6 7 8 1 0 10 9 3 4 2 5 6 7 8 1 0 10 9 3 4 2 5 6 7 8 1 0 10 9 3 4 2 5 6 7 8 1 0 10 9 3 4 2 5 6 7 8 1 0 10 9 3 4 MIDDLE 1 2 VOLUME 2 TREBLE MASTER VOLUME 1 BASS 2 5 6 7 8 1 0 10 9 3 4 2 5 6 7 8 1 0 10 9 3 4 2 5 6 7 8 1 0 10 9 3 4 2 5 6 7 8 1 0 10 9 3 [...]

P AGE 4 POWER STANDBY TWEED M ARK I ON POWER STANDBY TWEED M ARK I ON ST ANDBY SWITCH: The ST ANDBY switch turns off the high voltages in y our Boogie , while allo wing it to idle, k eeping the tube filaments warm. It should be used during power-up to keep from “shocking” cold power tubes. Simply flip the POWER switch to the ON position while l[...]

P AGE 5 REAR PANEL: FUSE 3A FUSE 3A GROUND FX LEVEL POWER / TWEED SWITCH: Continued From hard rock to insane metal, the MARK I can be your essential ingredient to achie ving an y tone imaginable! Those play ers who want that British “cr unch” tone can tr y replacing the output tubes with f our European - style EL34 power tubes. Greatly enhanced[...]

P AGE 6 REAR PANEL: (Continued) FUSE 3A GRND SLAVE LOOP FX LEVEL FX LEVEL OUT IN 2 5 6 7 8 1 0 10 9 3 4 FUSE 3A GRND SLAVE FX LEVEL FX LEVEL OUT IN 2 5 6 7 8 1 0 10 9 3 4 EFFECTS LOOP & LEVEL CONTR OL: This control and the two adjacent 1/4” jac ks compr ise the Eff ects Loop of the MARK I. When Eff ects de vices are connected to the Loop , th[...]

P AGE 7 REAR PANEL: (Continued) FUSE 3A GRND SLAVE LOOP PRES FX LEVEL FX LEVEL OUT IN 2 5 6 7 8 1 0 10 9 3 4 2 5 6 7 8 1 0 10 9 3 4 FUSE 3A GRND SLAVE LOOP PRES REV FX LEVEL FX LEVEL OUT IN 2 5 6 7 8 1 0 10 9 3 4 2 5 6 7 8 1 0 10 9 3 4 2 5 6 7 8 1 0 10 9 3 4 SPKRS 2 5 6 7 8 1 0 10 9 3 4 84 4 PRESENCE: The primar y function of the PRESENCE Control i[...]

GRAY REVERB WHITE TUBE TASK CHART M ARK I V 5 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 (Each 12AX7 contains two separate Triodes) V 2 V 3 V 4 V 1 B A B A B A B A REAR OF CHASSIS ( View from above - looking down on chassis ) 6L6 6L[...]

VOLUME 2 MASTER VOLUME 1 BASS MIDDLE POWER 60 RMS STANDBY TWEED M ARK I ON 100 RMS 1 2 TREBLE VOLUME 2 MASTER VOLUME 1 BASS MIDDLE POWER 60 RMS STANDBY TWEED M ARK I ON 100 RMS 1 2 TREBLE VOLUME 2 MASTER VOLUME 1 BASS MIDDLE POWER 60 RMS STANDBY TWEED M ARK I ON 100 RMS 1 2 TREBLE VOLUME 2 MASTER VOLUME 1 BASS MIDDLE POWER 60 RMS STANDBY TWEED M AR[...]

PA G E 1 0 TUBE MAINTENANCE & MICROPHONICS: Y ou ma y occasionally e xperience some f orm of tube noise or microphonics. Cer tainly no cause for alarm, this quir ky behavior co mes with the terr itor y and the T one. Much like changing a light b ulb , y ou don’t need a technician to cure these types of minor use r serviceable annoyances and i[...]

P AGE 11 DIA GNOSING PRE AMP TUBE PR OBLEMS: Because your amplifier is an all tube design, it is quite possible that you will at some point experience minor pre-amp tube no ise. Res t assured - this is no cause for alarm and you can take care of the problem yourself in a matter of minutes by simply swapping tubes Let us begin by saying; It is a “[...]

PA G E 1 2 SPEAKER IMPED ANCE MA TCHING & HOOK-UP GUIDE: IMPEDANCE: Wir ing up speak ers to provide the most eff ectiv e load and making sure that all of them are in phase will help in creating the b est sound possib le. This is not too difficult, as long as you understand a f e w things about loading and how to connect y our speakers to p rovi[...]

PA G E 1 3 SPEAKER IMPED ANCE MA TCHING & HOOK-UP GUIDE: (Continued) P ARALLEL: When wir ing in parallel, the resistance of the speakers decreases . T wo 8 ohm speak ers wired in ( hooked-up ) P arallel results i n a 4 ohm load. It’ s easy to calculate the effect of a resistiv e load when all the speakers are all the same resistance . It is r[...]

1 2 5 4 4 Ohm Cabinet 3 8 OHM 4 OHM 4 OHM Partial back view of some Mesa amp 8 Ohm Cabinet SAFE MISMATCH WIRING SCHEMES...Amplifier to Speaker Cabinets 4 OHM 8 OHM 16 OHM Partial back view of amplifier 16 Ohm Cabinet 4 OHM 8 OHM 16 OHM Partial back view of amplifier 16 Ohm Cabinet SAFE MISMATCH 8 OHM 4 OHM 4 OHM Partial back view of amplifier 8 OHM[...]

8 OHM 4 OHM 4 OHM Partial back view of amplifier 8 Ohm Cabinet 8 Ohm Cabinet 6 8 Ohm Cabinet 16 Ohm Cabinet 8 4 OHM 4 OHM 8 OHM Partial back view of amplifier SAFE MISMATCH 8 OHM Partial back view of amplifier SERIES BOX 8 Ohm 4 Ohm 4 Ohm 4 Ohm Cabinet 4 Ohm Cabinet 4 OHM 4 OHM 8 OHM Partial back view of amplifier PARALLEL BOX 8 Ohm 16 Ohm 16 Ohm 1[...]

4 OHM 4 OHM 8 OHM Partial back view of amplifier 8 Ohm Cabinet 8 Ohm Cabinet SERIES BOX 16 Ohm 8 Ohm 8 Ohm 8 Ohm Cabinet 10 SAFE MISMATCH 12 4 OHM 4 OHM Partial back view of amplifier 16 Ohm Cabinet 16 Ohm Cabinet 11 8 OHM 8 Ohm Cabinet 16 Ohm Cabinet 16 Ohm Cabinet 4 OHM 4 OHM 8 OHM Partial back view of amp PARALLEL BOX 8 Ohm 16 Ohm 16 Ohm WIRING [...]

4 OHM 4 OHM 8 OHM Partial back view of amplifier 8 Ohm Cabinet 8 Ohm Cabinet SERIES BOX 16 Ohm 8 Ohm 8 Ohm 16 Ohm Cabinet 13 SAFE MISMATCH WIRING SCHEMES...Amplifier to Speaker Cabinets 4 OHM 4 OHM 8 OHM Partial back view of amplifier 16 Ohm Cabinet 16 Ohm Cabinet PARALLEL BOX 8 Ohm 16 Ohm 16 Ohm 16 Ohm Cabinet SAFE MISMATCH 14 PA G E 1 7[...]

PA G E 1 8 BIAS ADJUSTMENT: ( A continuing ser ies ...) NO TE: An ar ticle written b y Randall Smith that we thought you might find interesting. Here’ s a question we often hear : “Wh y doesn’t Mesa put bias adjustments in their amplifiers?” W ell, there’ s a shor t ans wer and a long ans wer to this question. The short answer is that dur[...]

PA G E 1 9 BIAS ADJUSTMENT : (Continued) When you set the bias (whether it’ s by selecting the r ight resistors , as we do , or adjusting a trimmer — which is quicker) what y ou are doing is establishing the correct amount of idle CURRENT that flows through the power tubes. But you can’t adjust the current directly , you can only change it by[...]

PA G E 2 0 BIAS ADJUSTMENT: (Continued) Again, this has some mer it .. but it’ s still not as good as using tubes that are matched in the first place because compensatin g f or the mis-match causes the push-pull circuit itself to become unbalanced. T wo wrongs don’t really make a right. Some of the other recommended biasing, “methods” — s[...]

PA G E 2 1 ON TRIODES, PENT ODES & IRISHMENN With apologies to Friends and Relatives from the Emerald Isle - who will make their appearance soon enough - the humor which f ollo ws is dedicated to the memor ies of Spec McAuliff and F ae (Raf ael) McNally , tw o of the T r ue Greats. As their numerical ref erences suggest, the ter ms Diode , T ri[...]

PA G E 2 2 ON TRIODES, PENT ODES & IRISHMENT: (Continued) Thus a diode tube - one with a cathode and an anode - is mostly used to rectify alter nating current into direct current by passing it without restriction, but in one direction only . This also explain s wh y closing time is str icly enf orced at Irish pubs: Dur ing normal operation, the[...]

PA G E 2 3 PENT ODES: (Contin ued) stopping them. The influence of the plate tak es ov er and - being solid metal and of the highest positiv e attraction - it is at this final destination that the electrons congregate. Thus the proper cocktail w aitress - visib le through the louvers - is scantily clad so as to be all the more eff ectiv e at reinf [...]

PA G E 2 4 VOLUME 2 TREBLE MASTER VOLUME 1 POWER BASS MIDDLE 1 2 60 RMS STANDBY TWEED M ARK I ON 100 RMS M ARK I Front View JACK pt# KNOB pt# (all knobs) JACK pt# SWITCH pt# PILOT LIGHT pt# POT pt# POT pt# POT pt# POT pt# 591048 POT pt# 591278 POT pt# 591048 610130 610110 408109 591047 591047 591047 601073 SWITCH pt# 605373 703120 BLUE ONLY FUSE 84[...]

The Spirit of Art in Technology OO GI E B M ESA 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.[...]

The Spirit of Art in Technology 1317 Ross Street Petaluma, CA 94954 USA (707) 778-6565 FAX NO. (707) 765-1503[...]