Marshall JVM410H Manual De Instrucciones página 7

FRONT PANEL FUNCTIONS
The front panel is divided into 3 main sections:
channels, reverb and master. Each of the
channels has 3 modes which are differentiated
by the colour of the light in the button used
to change channel. These are green, orange or
red respectively.
1. POWER SWITCH
This turns the amp on and off.
2. STANDBY SWITCH
The standby switch is used in conjunction with
the power switch to warm up the amp before
use. Turn power switch on for 2 minutes before
switching standby on.
Set the standby switch to the off position during
breaks in performances.
Note: when the standby switch is off the amp can
be used without a load for silent recording. See
the 'Using your amp for silent recording' start-up
procedure for more information.
3. FOOTSWITCH/MIDI PROGRAM SWITCH
This switch has a dual function:
1. Pressing it once will enter 'footswitch
program' mode. This is indicated by a solid
red light.
2. Pressing it twice will enter 'MIDI program'
mode. This is indicated by a blinking red light.
See more information on these modes later in
this manual.
4. FX LOOP SWITCH
Engages/disengages the serial/parallel FX loop
for the current channel.
Note: This switch does not affect the power amp
insert / serial loop.
19. INPUT JACK SOCKET
Connect your guitar here using a ¼" jack
instrument cable.
CHANNEL SECTION
Pressing a channel button has two functions:
• When pressing in the same channel it cycles
the gain modes: GREEN (lowest gain level)
> ORANGE > RED (highest gain level)>
GREEN etc. Each mode remembers its own
previous FX, reverb and master settings.
• Coming from a different channel recalls the
last setting in the new selected channel.
Note: when you leave and then reselect a channel,
it will automatically recall the last active mode.
15. CLEAN CHANNEL
Green mode: This is the cleanest of the three
modes. It uses a simple and straightforward
circuit keeping the signal as pure as possible. In
this mode the channel's volume control is taken
out of circuit. This is the only mode where this
happens.
Orange mode: This mode offers a punchy sound
that's easy to overdrive.
Red mode: This is mode adds another gain stage
after the tone stack.
16. CRUNCH CHANNEL
This channel has a more typical Marshall preamp
circuit characteristic of 'gain then tone'.
Green mode: This mode shares the preamp
topology of the classic Marshall JTM45/1959
Plexi™ models (i.e.: gain + gain + tone). This
means the sound and response will be similar to
these vintage amplifiers, but with a bit more gain
than is found in the originals.
Orange mode: This mode is reminiscent of the
JCM800 2203 amplifier and offers gritty, . The
gain structure is gain + gain + gain + tone.
Red mode: This shares the topology of the
orange mode, but with more gain, giving you
sounds similar to a hot-rodded JCM800.
17. OD1 CHANNEL
Green mode: This is very similar to the sound
found in crunch red mode, allowing you to dial-in
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