Mesa/Boogie M-PULSE Owner'S Manual Download Page 12

FRONT PANEL CONTROLS:  

(Continued)

COMPRESSION:

   This section of your 

M-PULSE

 controls the processing of dynamics and this in turn, feeds the 

SIMUL-

STATE 

power section. It is another powerful tool that should be used with taste as it also has the power to be easily misused resulting 

in an unnatural sound with slaughtered dynamics. Most experienced 
players use compression minimally, but there are times when a radical 
compression effect is in order and the 

M-PULSE

 is capable of the 

entire range of signature compression characteristics.

It is comprised of three elements and these are the Program toggle 
switch,  the THRESHOLD  control  and  the  RATIO  control.  Like  the 
PARAMETRIC it can also be programmed ON (in all the time), OFF 
(out all the time) or F.S. (triggered remotely from the Footcontroller).

 

THRESHOLD:

   This control is like an input sensitivity meter to the compressor. Think of it this way; the lower the setting (toward 

0db), the less sensitive the input and therefore the bigger the signal it takes to activate the compressor. As the 

THRESHOLD

 is swept 

toward -40 the input becomes increasingly more sensitive and a smaller signal will be required to bring the compressor into action. 

At a maximum setting of -40 the COMPRESSOR will be basically 
“on” all the time as it’s input will begin to trigger compression at -40db 
of whatever your input signal is, making this extremely sensitive. To 
achieve a subtle and musical compression effect, try using a relatively 
low RATIO setting and then set the 

THRESHOLD

 so that compression 

begins with only your most dynamic (hardest) hits of the strings, which 
will probably occur somewhere in the vicinity of 9:00 - 10:30 with most 
basses. Experiment with the way your instrument signal responds to the 

THRESHOLD

 control to learn the trigger points for various effects.

RATIO:

  As its name infers, the 

RATIO

 control determines the ratio of compression as it relates to the input signal. Compression 

may be from a subtle soft-limiting effect - to an extreme, pumping squash and anywhere in between.

At 7:30 the 

RATIO

 control begins with a minimal 1:1 ratio setting. This means that for every 1db of signal (over the THRESHOLD 

setting) there will be an equal 1db of compression. This setting works well for keeping your dynamic range consistent when recording 

or for thumbing styles where the pluck of the higher strings is popping 
out a little too much. Many of the best sounds can be found down 
around this range.

As the 

RATIO

 is dialed up toward 12:00, a whole range of useful set-

tings appear as you sweep through the larger ratios of 2:1, 3:1, 5:1, 7:1 
and so on. In this range the compression effect multiplies and a much 
more definitive effect is produced. The lower settings of this range (up 
to 10:30) works well for thickening and “occupying mix space” while 
not increasing volume level.

PAGE 8

THRESHOLD

       

RATIO             MAIN            SOLO

COMPRESSION                     

MASTER  VOLUMES

ON

POWER

THRESHOLD       

RATIO             MAIN            SOLO

COMPRESSION

                     

MASTER  VOLUMES

ON

POWER

THRESHOLD

       RATIO 

            MAIN            SOLO

COMPRESSION 

                    

MASTER  VOLUMES

ON

POWER

Summary of Contents for M-PULSE

Page 1: ...OOGIE B MESA Owner s Manual...

Page 2: ...ave purchased the most comprehensive instrument for amplifying Bass that is available What you might not realize is that this entitles you to all the experience resources and commitment our twenty fiv...

Page 3: ...TROLS Parametric EQ 7 COMPRESSOR 8 THRESHOLD 8 RATIO 8 9 MAIN Output 9 SOLO Output 9 POWER SWITCH 9 FUSE 10 A C RECEPTACLE 10 SLAVE OUT 11 SPEAKER OUT 11 DIRECT OUT LEVEL POST PRE GROUND LIFT and XLR...

Page 4: ...openings with items such as newspapers tablecloths curtains etc Do not impede ventilation by placing objects on top of the apparatus which extend past the rear edge of its cabinet No naked flame sour...

Page 5: ...way this 5 Band EQ is a great addition you will come to find invaluable Next in the signal path is a new improved Compressor that features both THRESHOLD and RATIO controls First included on our M 200...

Page 6: ...al amplifier s in a 1 dry 1 wet scenario And finally 2 SPEAKER OUTPUTS are provided to harness the robust output of the M PULSE power amp With this pair of jacks almost any speaker cabinet or combinat...

Page 7: ...tting notching undesirable frequencies is often preferable to boosting desirable ones By using this technique you will keep noise to a minimum and ensure ample headroom at all times The Parametric is...

Page 8: ...nd greater headroom and provide a scooped brighter personality The upper harmonics come through more prominently in this area of the control making the top end sound more transparent and sweet This re...

Page 9: ...tring of rotary tone controls This scheme was chosen for its inherently musical blend and for the way the passive style midrange control with its wide spread and smooth taper fills in the holes Unlike...

Page 10: ...and left active in the signal path to achieve your main sound or it may be remotely triggered from the Footcontroller to achieve unique footswitchable solo sounds or a different sound for an alternate...

Page 11: ...tolerant of sub low low and super high frequencies You have probably heard the soundman at many a gig say take some 1K out of that snare or guitar mic This high mid frequency is often called the pain...

Page 12: ...and musical compression effect try using a relatively low RATIO setting and then set the THRESHOLD so that compression begins with only your most dynamic hardest hits of the strings which will probabl...

Page 13: ...is capable of very loud output volumes that could potentially cause damage to your hear ing or the hearing of others May we suggest always beginning your set up by zeroing out the MAIN output level c...

Page 14: ...CAUTION Unplug power before removing fuse or bolts holding chassis WARNING To reduce risk of fire or electric shock replace fuse with same type and rating only Do not expose this unit to rain or mois...

Page 15: ...et an appropriate level for the Direct Signal to match the input sensitivity of the console It is always best to start with the LEVEL control zeroed out before connecting a cable to the DIRECT output...

Page 16: ...se the M PULSE as a slave power amp by connecting a signal to the RETURN jack you must have the EFFECTS LOOP turned ON see next section and the MIX control set to 100 or the input sensitivity will be...

Page 17: ...0 90 250 900 4K SIMUL STATE POWER THRESHOLD RATIO MAIN SOLO COMPRESSION MASTER VOLUMES ON FS OFF Articulate Solo PASSIVE ACTIVE GAIN BASS MID TREBLE FOUR STAGEVACUMMTUBE PREAMPLIFIER ON POWER ON FS OF...

Page 18: ...ATIO MAIN SOLO COMPRESSION MASTER VOLUMES ON FS OFF Punch PASSIVE GAIN BASS MID TREBLE FOUR STAGEVACUMMTUBE PREAMPLIFIER ON POWER ON FS OFF 0 db 0 0 0 0 40 Hz 120 400 1 4K 6K SEMI PARAMETRIC EQUALIZER...

Page 19: ...minor pre amp tube problems can take many forms but can generally be described in two categories Noise and Microphonics Noise can be in the form of crackling sputtering white noise hiss and or hum Mic...

Page 20: ...0 900 4K SIMUL STATE POWER THRESHOLD RATIO MAIN SOLO COMPRESSION MASTER VOLUMES ON FS OFF PASSIVE GAIN BASS MID TREBLE FOUR STAGEVACUMMTUBE PREAMPLIFIER ON POWER ON FS OFF 0 db 0 0 0 0 40 Hz 120 400 1...

Page 21: ...0 900 4K SIMUL STATE POWER THRESHOLD RATIO MAIN SOLO COMPRESSION MASTER VOLUMES ON FS OFF PASSIVE GAIN BASS MID TREBLE FOUR STAGEVACUMMTUBE PREAMPLIFIER ON POWER ON FS OFF 0 db 0 0 0 0 40 Hz 120 400 1...

Page 22: ...0 0 40 Hz 120 400 1 4K 6K SEMI PARAMETRIC EQUALIZER 30 90 250 900 4K SIMUL STATE POWER THRESHOLD RATIO MAIN SOLO COMPRESSION MASTER VOLUMES ON FS OFF FRONT PANEL CONTROLS E N G I N E E R I N G KNOB p...

Page 23: ...The Spirit of Art in Technology OOGIE B MESA 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...

Page 24: ...The Spirit of Art in Technology 1317 Ross Street Petaluma CA 94954 USA 707 778 6565 FAX NO 707 765 1503 10 13 10...

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