Mesa/Boogie Big-Block 750 Owner's Manual
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Also See for Big-Block 750:
- Owner's manual (54 pages) ,
- Operating instructions manual (24 pages) ,
- Owner operating instructions (11 pages)
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Summary of Contents for Mesa/Boogie Big-Block 750
- Page 2 Greetings from the Home of Tone ...You, smart player and intuitive human, have put your trust in us to be your amplifier company. This is something we do not take lightly. By choosing this instrument to be a part of your musical voice, you have become part of the Mesa family...WELCOME! Our goal is to never let you down.
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Page 3: Table Of Contents
Table_of_Contents Precautions Overview_ _ ________________________________________________________________________________________ 1-2 FRONT_PANEL: INSTRUMENT_INPUT__________________________________________________________________________________ 3 PASSIVE/ACTIVE_SWITCH_ ____________________________________________________________________________ 3 TUNER_ ____________________________________________________________________________________________ 3 CONTROLS: OVERDRIVE_______________________________________________________________________________________ 3-4 GAIN_______________________________________________________________________________________________ 4 BASS_ _ ___________________________________________________________________________________________ 4-5 PASSIVE_MID________________________________________________________________________________________ 5 ACTIVE_MID_________________________________________________________________________________________ 5 FREQUENCY_ _______________________________________________________________________________________ 6 TREBLE_ ___________________________________________________________________________________________ 6 MASTER____________________________________________________________________________________________ 6 O.D._MASTER________________________________________________________________________________________ 7 POWER_SWITCH_ ____________________________________________________________________________________ 7 REAR_PANEL: FUSE_ _ _____________________________________________________________________________________________ 8 A.C._RECEPTACLE_ _ __________________________________________________________________________________ 8... - Page 4 PRECAUTIONS & WARNINGS 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: WARNING: EU: permission from the Supply Authority is needed before connection. WARNING: Vacuum tube amplifiers generate heat. To insure proper ventilation always make certain there is at least four inches (100mm) of space behind the rear of the amplifier cabinet.
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Page 5: Overview
Congratulations on your choice of the M-PULSE BIG BLOCK 750 as your amplifier and welcome to the MESA/Boogie Family! First we would like to thank you for choosing us as your amplifier company. This is something we never take for granted and you will come to find that we are here to help you sound your best should you ever need help. -
Page 6: Overview
verview (Continued) Looking at the Front Panel, it is apparent how logically the controls are laid out before you, creating a simple and intuitive platform for expression. However, don’t let this simplicity deceive you as to the incredible shaping power of this preamp. The tone controls are voiced such that minimal shaping is needed to achieve a warm musical blend, yet should you want to create your own signature sound, they can take you anywhere you wish to go quickly and effortlessly. -
Page 7: Front_Panel
FrONT PANeL CONTrOLS: INPUT: This jack is the instrument INPUT which feeds the first tube in the all-tube preamp of the BIG BLOCK. It is set up with enough headroom to handle both passive and active style instruments. For active instruments you may find yourself running the GAIN control somewhere between 10:00 and 2:00 for optimum headroom. -
Page 8: Gain
FrONT PANeL CONTrOLS: (Continued) OVERDRIVE: (Continued) In the lower region of the OVERDRIVE control, you will find that a subtle boost can create footswitchable soloing options where the added gain is merely thickening, rather than saturating the signal. Because this circuit has its own MASTER control, stepping out can be easy and controllable. -
Page 9: Passive_Mid
FrONT PANeL CONTrOLS: (Continued) BASS:_ (Continued) nature. As the control is increased past 12:00 there is a 6db per octave rise in gain with the frequency topping out at 321Hz. With 12:00 straight-up representing “flat” (a no boost/no cut setting). As the BASS control is dialed below 12:00, 55Hz and all associated harmonics are reduced and eventually notched completely out of the signal. -
Page 10: Frequency
FrONT PANeL CONTrOLS: (Continued) FREQUENCY: This control determines the frequency range that the ACTIVE MID control will cut or boost. As mentioned earlier, it covers a broad range that sweeps from the low midrange region to the lower treble frequencies. The control sweeps from 200Hz on the low side to 2Khz on the high side - with 340 Hz riding the center, straight up at 12:00 on the control. -
Page 11: O.d._Master
FrONT PANeL CONTrOLS: (Continued) O.D._MASTER: This control, like the OVERDRIVE, is designed to help you think outside the box. It provides an independent vol- ume control for the OVERDRIVE mode, allowing you to preset the level of the overdriven sound and footswitch to it for specific parts. The O.D._MASTER is only active when the OVERDRIVE CIRCUIT is engaged by either pulling the O.D._MASTER or by connecting the Footswitch and selecting OVERDRIVE. -
Page 12: Rear_Panel
reAr PANeL CONTrOLS: REAR VIEW: Big Block 750 CAUTION SLAVE Unplug power M-PULSE BIG BLOCK 750 before removing fuse or LEVEL POST bolts holding chassis SIMUL STATE BASS AMPLIFIER TUBE DRIVEN-MOSFET POWER GROUND LIFT EFFECTS SPEAKER OUTPUT POWER FUSE 120 V~ RETURN SEND 60 Hz... -
Page 13: Ground_Lift,_Post/Pre,_Direct_Out
reAr PANeL CONTrOLS: (Continued) GROUND_LIFT,_POST/PRE,_DIRECT_OUT:_ (Continued) PRE gives you just the sound of your instrument and no BIG BLOCK 750 enhancement so that an engineer can create their own sound with your unprocessed signal at the console. This is very handy for sound reinforcement applications as the sound you use on stage may be too big with enhanced low end for a large venue house application. -
Page 14: Tuner
reAr PANeL CONTrOLS: (Continued) TUNER: This Rear Panel auxiliary TUNER output is wired in parallel with the Front Panel TUNER output. This provides for Rear Panel interfacing of rack mount tuners, where it is preferable to have all wiring stay in the rear of a rack sys- FOOT TUNER SWITCH... -
Page 15: Factory_Sample_Settings
ACTIVE PASSIVE ACTIVE PASSIVE ACTIVE PASSIVE ACTIVE PASSIVE PAGE_11... -
Page 16: Personal_Settings
ACTIVE PASSIVE ACTIVE PASSIVE ACTIVE PASSIVE ACTIVE PASSIVE PAGE_12... -
Page 17: Diagnosing_Pre-Amp_Tube_Problems
DIAGNOSING_PRE-AMP_TUBE_PROBLEMS: At some point it is quite possible that you will experience some kind of minor pre- amp tube noise. Rest 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. -
Page 18: Parts_Sheet
ACTIVE PASSIVE PULL MUTE PULL OD ON (2) JACKS POT pt# POT pt# POT pt# POT pt# LENS pt# 590148 593737 592655 596151 703783 BULB pt# POT pt# POT pt# POT pt# POT pt# SWITCH POT pt# 590151 590079 590151 596151 703047 590794... - Page 20 02/05/07...