Operating Instructions
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. We feel confident that your new amplifier will bring you many years of rewarding inspiration and create for you a newfound freedom to express through your music.
This mighty powerhouse joins the innovative band of M-PULSEhybrid bass amplifiers as the heavyweight king of headroom with its urgent big venue tone. It represents the ultimate marriage of simplicity and versatility and will surprise you daily with its fundamental musicality and tone.
The BLOCK stands firmly on the same soulful sounding ground as all M-PULSEamplifiers, with architecture based on our 30 years of all-tube preamp experience and Simul State™ Power - which utilizes a tube driver stage feeding a bank of custom designed mosfet output devices. This design seamlessly integrates the best sonic qualities of old-world tube circuitry and modern high power mosfet technology to arrive at a stunning blend that is both musical and powerful. In the BIG 750’s case, that is doubly true. This monolith of tone harnesses not one, but two power blocks, putting at your immediate disposal ridiculous amounts of transient handling current produced by the 20 mosfet devices. This means when you want to say something with your instrument, your voice will be heard with accuracy, both harmonically and in the time domain. Every bassist knows how important that is!
FRONT VIEW: Big Block 750
S I M U L S T A T E TM B A S S A M P L I F I E R
| OVERDRIVE | GAIN | BASS | PASSIVE-MID ACTIVE-MID FREQUENCY TREBLE | MASTER | O.D.MASTER |
INPUT | TUNER | | | | | AC OFF |
| MUTE | | | | | OVERDRIVE |
| | | | 5 - STAGE VACUUM TUBE AMPLIFIER | | |
REAR VIEW: Big Block 750
CAUTION:Unplug power before removing fuse or bolts holding chassis
US |
F | E |
| F |
ESU |
POWER | | FUSE |
|
120 V~ | | 15A |
60 Hz | | SLO |
15 A | | BLO |
| | |
| | |
POST | PRE | M-PULSE | BIG BLOCK 750 | LEVEL SLAVE OUT |
SIMUL STATE BASS AMPLIFIER | |
GROUND | | TUBE DRIVEN-MOSFET POWER | |
| | | | |
LIFT | | EFFECTS | |
| | |
| | | | | SPEAKER |
| | | | | OUTPUT |
DIRECT OUTPUT | RETURN | | SEND | SUGGESTED LOAD |
FOOT | | TUNER |
| LEVEL | | 2 OHMS MINIMUM |
| | SWITCH | | |
HANDBUILT IN PETALUMA , CALIFORNIA
