Mesa/Boogie M-PULSE Owner'S Manual Download Page 10

FRONT PANEL CONTROLS:  

(Continued)

TREBLE:  

Continued

  

   retaining all the necessary cut and focus associated with a traditional passive 

TREBLE

 control.

As the control is dialed below 12:00, it begins a 6db per octave cut from 3.2Khz to the shelving point at 723Hz, where it continues to 
attenuate all frequencies above 723Hz until - 20db is reached where 

cut gain

 remains constant until the control reaches 7:30 (off). 

The ability to cut these frequencies more radically makes it possible to obtain incredibly rich and warm old-school R&B and Jazz 
sounds that rival any recordings of the day.

This active shelving 

TREBLE 

control completes the rotary tone control string to create a powerful and extremely accurate network 

to use as your fundamental platform. It’s no wonder many first time 

M-PULSE 

players make the comment that just these controls 

combined with the GAIN create the best tone they have ever heard!

NOTE:

  

As with the BASS control, may we remind you that a control of this type with its increased power should be used with finesse. 

In the 

TREBLE’S

 case, almost more so, because higher frequencies seem louder to the ear and are generally more painful when set 

to extremes. Another reason to use care is that high frequencies tend to increase the ambient noise floor when set too high. This is 
then exacerbated if the 5 Band Parametric is combined for added top end boost. Dial with care and music in mind.

PARAMETRIC EQUALIZER: 

   Your 

M-PULSE

 is equipped with a powerful 

5 BAND SEMI-PARAMETRIC EQUALIZER

 that 

allows you to shape your signal to achieve virtually any sound. Anything from subtle enhancement to extreme notching or boosting is 

possible with the only limit  being your imagination. The 

EQ

 can be used in combina-

tion with the rotary tone controls 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 instrument.

As you can see the 

EQ

 section is comprised of three elements; the Program toggle 

switch and LED indicator, the 5 GAIN controls on the top row, and the FREQUENCY 
controls on the bottom row. The Program toggle puts the 

EQ

 “in” where you want it, 

the GAIN control for each band lets you decide how much cut or boost of the cor-
responding frequency you want, and the FREQUENCY control lets you decide the 
specific frequency within that band.

Since the Program switch is pretty much straightforward with ON and OFF being just 

that - and F.S. being controlled by the Footcontroller, we will move right to the GAIN and FREQUENCY controls.

GAIN CONTROLS:  Parametric EQ  

   These 5 

GAIN

 controls adjust the amount of whatever frequency has been zeroed-in on 

for manipulation with the FREQUENCY control. Each of the 5 

GAIN 

controls allows a full 30db of gain adjustment with 15db of cut 

and 15db of boost from the center (12:00) 0db position. When searching for sounds it is sometimes faster to either notch or boost 

the respective

 GAIN

 control radically and the sweep for the desired frequency with 

the FREQUENCY control. This way it will be very apparent what you are doing to the 
sound.

This is a good place to mention again that, because of the strength of the 5 

GAIN

 

controls, it is possible to very quickly go beyond the realm of balanced musical tone and 
blow holes in your mix. Therefore, start by building a great sound using the standard 
rotary TONE controls and then begin with subtle tweaking of the frequencies using 
the PARAMETRIC. Don’t start boosting everything all over the bandwidth and     

PAGE 6

0 db                  0                     0                     0                      0

40 Hz                120                400                 1.4K                   6K

E N G I N E E R I N G

0 db                  0                     0                     0                      0

40 Hz                120                400                 1.4K                   6K

SEMI  - PARAMETRIC EQUALIZER

30                    90                 250                 900                    4K

E N G I N E E R I N G

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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