Mesa/Boogie JP-2C Owner'S Manual Download Page 26

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If you see nothing abnormal as you move the STANDBY switch to ON, it is possible that a power tube shorted ‘temporarily’ and caused
the blown Fuse. Occasionally, whether from just luck or from cooling down, a short in a power tube ‘reconnects’ itself temporarily
and can operate normally again for a time… but this tube should be considered faulty and replaced as soon as possible to ensure
uninterrupted performance. If you can identify a tube that is arcing or shorting by the method mentioned above and the tubes have
minimal use, consider replacing the obviously faulty or failed tube and leaving the others installed.

If you haven’t changed tubes for a while after heavier use, a failure may be telling you it’s time to change all your power tubes. Save
any working but used tubes as spares.

Spare fuses (of the proper type and rating) are a must for the fabled cord bag along with at least one set of spare tubes. Always have
both on hand—at the gig or at home—since tubes decide, not you, when it’s time to stop working. Spare tubes and fuses can be
worth their weight in gold should you ever experience a tube failure, especially on a gig. We STRONGLY recommend making them
a permanent fixture in your gig bag.

REVERB

These three controls determine the REVERB Mix for each of the three JP-2C Channels. They are laid out such that

you can reach over the top of the Cabinet and adjust the controls at the far right of the Rear Panel (when facing the front of the ampli-

fier) with the Mix for each of the Channels following the layout they appear to you in (when
viewing the Front Panel). The rich all tube REVERB is fed from different places in the circuit
depending on whether you are in Channel 1 or the two high gain Channels (2 and 3) with
the send strength adjusted accordingly. It is normal for Clean sounds in Channel 1 to have
a deeper, more drenched character similar in response to a “vintage” amplifier as compared
with the two high gain Channels (2 and 3) in which the saturation dictates less depth.

Remember that to have REVERB work well across Channels with such differing extremes in gain is a VERY difficult challenge,
especially when it involves staying true to circuit architecture as critical for the MARK II-C+ high gain performance, as this model
does. Therefore, it is not sensible to compare REVERB performance with amplifiers that don’t provide such a vast spectrum of gain
available across multiple Channels. There are limits to both saturation and the available mix in terms of stability in a package this
comprehensive and this small physically. Rest assured we have exhausted all possible scenarios to arrive at what is excellent REVERB
performance across all the available sounds in an amplifier capable of these extremes in gain.

To employ the REVERB, simply turn it on (switch up) on the Front Panel in the lower left corner of the EQ Window and set the desired REVERB
Mix with the control associated with the Channel you wish to play in. Once you have activated the REVERB, you may mute the REVERB
(turn it on and off) via the MESA JP-2C Footswitch. The REVERB Indicator LED on the Front Panel will track the status of the REVERB.

To store the REVERB status (on or off only, not Mix setting) of a Channel under a Midi Program, (as with all Feature mini toggles on
the JP-2C) you must “reset” the switching buss first by turning it off.

1. Go to the desired Midi Program Number on your controller of choice.

2.  Call up the desired JP-2C Channel with the Front Panel Channel Select mini toggle located in the upper right corner of the EQ Window.
3.  Set the REVERB mini toggle located in the lower left corner of the EQ window to “MD/FS” (switch down).
4.  Move the REVERB mini toggle to “REV” (switch up).
5.  Toggle the STORE switch on the far left (when viewing from front) of the Rear Panel of the JP-2C one time. The current Chan-

nel and REVERB status has been written to the currently displayed Midi program location in the JP-2C’s processor.

The Channel and REVERB status is now saved under the current Midi Program Number displayed on you Midi controller and should
be called up again when next you return to that Program Number. If it is not, repeat steps 1 – 5 and check again.

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120 V

60 Hz

4 A

SLO

BLO

AMPLIFIER

44YV

FUSE

CH 3

CH 2

CH 1