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Marshall JTM45 - 2245 Manual

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FRONT PANEL FUNCTIONS
PRESENCE BASS MIDDLE
TREBLE HIGH TREBLE NORMAL
MAINS
ON ON
STANDBY
LOUDNESS 1 LOUDNESS 2
INPUTS
JTM
45
1
1
2
2
0
28
6
4
10 0
28
6
4
10 0
28
6
4
10
0
28
6
4
10 0
28
6
4
10 0
28
6
4
10
MK
II
1
2245 JTM45 FRONT PANEL
2 3 4 5 6
1. MAINS
Mains power ON/OFF switch.
2. STANDBY
STANDBY is used in conjuncon
with the MAINS power switch (Front
Panel Funcon #1) to ‘warm up’ the
amplier before use and to prolong
the life of the output valves. When
powering up, always switch MAINS
power on rst, leaving the STANDBY
switch in the ‘standby’ posion. This
allows the applicaon of the voltage
required to heat the valves to their
correct operang temperature. Aer
approximately two minutes the valves
will have reached the correct operang
temperature and the amplier can be
engaged by switching MAINS power
ON.
Note: In order to prolong valve life, always
set the STANDBY switch to the ‘standby’
posion when turning the amplier sound
on and o during breaks in performance.
Also, upon full power down, always put the
amplier in ‘standby’ prior to switching o
the MAINS power.
3. INDICATOR
The power indicator will light when the
amplier’s mains power is switched on
and will be unlit when the mains power is
switched o.
4. PRESENCE
Controls the overall amount of higher
frequency content in your sound. Turn
clockwise to add crispness and bite for a
more cung tone. Presence is a power-
stage funcon and acts independently
of the preamp EQ controls.
5. BASS
Controls the amount of lower frequency
content, or boom-end, in your sound.
Turning clockwise will increase the
boom-end giving a fuller tone.
6. MIDDLE
Controls the middle frequency content
of your sound. Turning clockwise adds
girth. Turning anclockwise reduces
middle frequencies giving a smoother,
more ‘scooped’ tone.
7. TREBLE
Controls the high frequency content
of your sound. Turning clockwise will
increase the highs giving a brighter tone.
Tonal Note: The preamp EQ network
is dynamic and highly interacve, and
because of this altering the seng of one
ENGLISH
II
… 14 …


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