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STANDBY SWITCH: The standby switch shuts off the signal at the effect send stage. With the
Quad in Standby, noise produced by the effects will still be audible but no signal will be passed to
the outputs. If this noise is considerable or undesirable, use the standby switches on the power
amp. Recommended Standby application:
1) During set breaks.
2) During patching and effects set-up.
3) During Power up. Approximately 30 seconds.
MODE/EQ INDICATION LED’s: There are six red LED's located in the center of the Quad between
the two channel borders. These indicated the mode/modes chosen as well as the EQ chosen.
During Power-up it is normal for all six LED's to glow. When the mode/EQ desired is selected, only
those LED's will be activated.
FU-2 FOOTSWITCH: This is the manual access to the four modes and two equalizers in the Quad.
Using digital logic, a "one of four" switching system is achieved enabling the user to access any
mode instantly with only one foot motion. In addition, the equalizers can be added to their
respective channels at will, regardless of the front panel toggle settings.
The FU-2 connects to the Quad via the 30-foot cable provided with the unit. It is a four conductor
shielded cable that is wired to a standard 4-pin XLR connector. This is inserted into the jack
labeled “FU-2 Only" located on the Quad's Rear Panel. Should a longer cable length become
necessary, another 30 foot extension may be inserted to obtain a total of 60 feet.
During "power-up" the Quad is essentially in "no mode-mode". This means that a mode must be
selected before any sound will be audible. At this time, all the LED indication lights will appear on
the front panel of the Quad and no LED indication lights will appear on the FU-2. This is normal
and should be no cause for alarm. When a mode has been selected one of the four “mode” LED's
will then be activated.
Should you accidentally hit two switches at once and two “mode” LED's remain on, you have found
one of the Quad's "Hidden Treasures". By hitting two switches simultaneously, it is possible to
access two modes at once. This feature is best suited to use one mode in each channel, (i.e.,
Rhythm 1 and Lead 2). Used in this manner a player can blend a clean sound, (for articulation)
and an overdriven sound, (for sustain) together. The result is a very unique sound with complete
control and limitless possibilities.
Should you find sounds using the “two at once” or “mode mix” feature that you want to incorporate
into a live situation, we suggest the following. Since it is very difficult to activate two footswitch
buttons at exactly the same time, an external source of switching would be preferred. The eight ¼”
jacks labeled “E./Midi Switching", located on the Quads rear panel each represent a mode/function
on the Quad. By inserting a standard "grounding" or "shorting" switch into the appropriate jack, a
particular mode or modes can be accessed: individually or simultaneously. The easiest way to
achieve this would be to incorporate the Mesa "Midi Matrix" switching system. In this set-up a
mode or, two modes at once, can be accessed under a given program number. In this manner the
"Mode Mix" function can become a valuable part of your live performance.
REAR PANEL FEATURES
INPUT: This 1/4 inch-jack is the main input for the Quad. It is an insulated Mono input designed for
use with one instrument. Always use a shielded guitar cable of good quality when connecting the
instrument to the Quad pre-amp.
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