Mesa/Boogie 100 Manuel D’Utilisation

   This control is the master feed from the end of the pre-amp to the driver stage and the Effects Loop. As you can see each

Channel is fitted with its own MASTER  Control, enabling the three channels relative volumes to be matched regardless of their extremely

different sound styles and gain signatures. The MASTER  Control makes possible
a wide range of sounds through its ability to use very low Gain sounds at high
volumes and conversly, high Gain sounds at low volumes and everywhere between.

Again, we suggest using the MASTER  Control in its sensible ranges ( 9:00 - 2:00 ).
Here, the channels will be easier to match with each other and the Effects Loop will
see more reasonable signal levels.

NOTE:  Because the MASTER  Control creates the send to the Effects Loop, ex-
treme settings will cause a large signal to be sent to the Loop for that Channel. Not
only may this cause possible overloading of the processors Input stage, but will
make balancing the three channels’ Effect Send level difficult.

   This control regulates the amount of negative feedback in the power amp stage and affects mostly higher frequencies.

It acts independantly of the other rotary tone controls and is crucial
in voicing the Channel. It is a powerful global tone control.

Lower PRESENCE Control settings darken and, in fact compress
the signal which works well to fatten single note solo sounds, giving
them girth and focus. Some of the best lead sounds in your Nomad
will find the PRESENCE Control in its lower regions, where a bal-
anced, vocal response is achieved.

   As in most tube guitar amplifiers, the TREBLE Control ( in all three channels of your Nomad ) is the most powerful of the

rotary controls and is next in line only to the GAIN Control as a shaping tool. Because it is first in the signal path of the tone controls - and
from here the Middle and Bass receive their signal - it is by far the dominant tone control. For this reason the setting of the TREBLE Control

is very important for equal representation of the three frequency regions to appear at their re-
spective controls. Like most of the controls on your Nomad, there is an optimum region of the
TREBLE Control where ample top end is mixed in and yet enough signal is still passed on to the
MIDDLE and BASS Controls.

As you might surmise, here is the sweet spot. There are definitely great sounds above and below
this middle region ( 11:00 - 1:30 ), but the balance between the TREBLE Control and the other
two tone controls is compromised.

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