Mesa/Boogie JP-2C Owner's Manual page 12

The PULL PRES feature located on the PRESENCE control allows two very different Presence frequencies to be selected. When
PULLED, the time-honored frequency we have used for 45 years appears, which allows control over a much higher range of top end
than that of the TREBLE control. When left PUSHED-IN, the PRESENCE control operates on a lower frequency that is still above
the TREBLE, but adds "increased cut and focus" lower than the traditional PRESENCE that in some applications can sound more
cohesive for high gain Crunch rhythm sounds.
Because of the different frequencies involved and where they appear in a well blended ratio on the taper of the PRESENCE pots
in Channels 2 and 3, there is usually a need for readjustment of settings between the two (Pushed and Pulled) Presence Modes.
The deactivated PUSHED-IN Mode will require you to set the PRESENCE control higher to achieve a balanced (open) sound, while
the PULLED-OUT Mode will require you to decrease the PRESENCE control to blend in these higher frequencies and achieve a
warmer sound. This is because in most cases, the higher a frequency is, the more it can begin to sound detached (buzzy) from the
fundamental notes and their related harmonics in the spectrum. The original (higher) PRESENCE frequency aboard "Boogies" has
historically found the control set below 11:30 by most players to produce a balanced, warm sound. The new lower frequency option
can be introduced in larger amounts since it's closer to the rest of the frequencies in the spectrum and seems less detached.
5-BAND GRAPHIC EQ x 2
for the two 5-Band Graphic Equalizers. This 3-position toggle allows assignment of either of the EQs to any of the three Channels,
with the upper position engaging EQ 1 and the lower position employing EQ 2. The center position of the EQ switch bypasses the
EQ section and the Channel's rotary Tone controls are the only equalization active when the switch is set there.
The 10 EQ Faders (pots) that make up the two separate 5-Band Graphic Equalizers are housed in the EQ Window section of the
Front Panel. Along with them, this section contains control switches for four other Functions/Features. These are the Effects Loop,
Reverb, Channel Select and the SHRED Voicing Mode. This convenient placement alongside the EQ Faders in this Window allows
you to dial in your individual sounds and selections quickly and in one place, so that when storing the settings you have arrived at
for a given sound under a Midi Program number, there isn't the need for a lot of jumping around on the Panel. That is of course after
you have chosen a Channel and set the rotary GAIN and Tone controls to your liking.
FX (Effects Loop)
REV (Reverb)
The global REVERB switch in this section of the the JP-2C offers three choices; OFF (Bypassed in All Channels),
FS (Footswitchable from the JP-2C Footswitch) and ON all the time (and Midi assignable).
CHANNEL SELECT
nected or not present. Channel 2 is the "default" Channel for the switching matrix and therefore, when the switch is in the "Center Off"
position, Channel 2 is triggered. Move the toggle to the upper position to access Channel 1 and the lower position to access Channel 3.
SHRED
The JP-2C incorporates this new voicing feature in the high gain Channels not present in the original MARK II-C+
LEAD Mode that further enhances the harmonic layering of the top end. This 3-position switch located to the lower right of the EQ 2
window affects only Channel's 2 and 3 and adds an additional layer of upper harmonic content in these high gain Modes (Channels).
It is especially beneficial for high gain Crunch Rhythm sounds, as it lends aggression and three-dimensionality to the sound and adds
a harmonic haze that rides atop the fat, grinding wall of gain nicely.
For single note solo work the SHRED feature adds a smoldering, sizzle and brings the sound forward for some truly fiery lead sounds
with supreme urgency. SHRED can be tamed for this application by working with (reducing/balancing) both TREBLE and PRESENCE
controls to soften the attack region and take some of the "pointiness" out that SHRED can add to arrive at some really amazing solo
textures that have a soaring, boundless quality.
NOTE: Avoid setting the TREBLE high (above 2:00) when the GAIN is to be set high as this brings about the tendency for a slightly
microphonic tube to ring or squeal.
SHRED is also extremely well suited for instruments built from darker sounding woods such as Mahogany, Basswood, and/or shorter
As mentioned above, the ONLY switch in each of the three Channels is the assignment switch
This 2-position switch brings on line the Effects Loop the choice of IN all the time or Bypassed.
This 3-position toggle allows manual access of the 3 Channels when the JP-2C Footswitch is not con-
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