Marshall Amplification JVM410H HEAD User manual

OWNER’S MANUAL
JVM410H HEAD &
JVM410C COMBO
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WARNING! IMPORTANT SAFETY INSTRUCTIONS
ENGLISH
WARNING:
Before going any further, make sure that
your amplier is compable with your
mains electricity supply. If you have any
doubt, please seek help from a qualied
technician – your Marshall dealer can help
you in this respect.
MAINS INPUT & FUSE:
The specic mains input voltage rang
that your amplier has been manufactured
for is indicated on the rear panel of the
amplier. Your amplier is provided with
a detachable mains (power) lead, which
should be connected to the MAINS INPUT
socket on the rear panel of the amplier
(Rear Panel Function #13). The correct
value and type of mains fuse is specied
on the rear panel of the amplier. NEVER
aempt to bypass the fuse or t one of the
incorrect value or type.
TRANSPORTING YOUR EQUIPMENT:
Please ensure that your amplier is
switched o, unplugged from the mains
electricity supply and all removable
cables have been disconnected from your
equipment before aempng to move it.
IMPORTANT SET UP INFORMATION:
1. When using JVM410H head, or
JVM410C combo with an extension speaker
cabinet(s), make sure that the speaker
cabinet(s) is connected to the correct
impedance loudspeaker jack socket(s) on
the rear panel of the amplier. See the
LOUDSPEAKERS guide in this manual for
specic informaon regarding impedance
matching (Rear Panel Function #19).
WARNING Failure to do the above may
damage your amplier. When connecng
a speaker cabinet make sure that you
use a proper speaker cable. Never use a
screened (shielded) guitar cable for this
purpose.
2. Ensure that the POWER switch (Front
Panel Function #12) is set to the OFF
posion.
3. Connect the supplied mains (power)
lead into the MAINS INPUT (Rear Panel
Function #13) rst and then into the mains
electricity supply.
4. Ensure that the MASTER 1 and MASTER
2 controls on the front panel are set to
zero (Front Panel Function #7).
5. Plug your guitar into the INPUT jack
socket on the front panel (Front Panel
Function #1).
6. Ensure that the STANDBY switch (Front
Panel Function #11) is in the OFF posion.
7. Turn the front panel POWER switch
to the ON (I) posion and wait for a few
minutes before going to point 8.
8. Engage the amplier by switching
STANDBY to the ON posion.
9. Turn the volumes up to your preferred
level and your amplier is ready to play.
PLEASE READ THIS MANUAL CAREFULLY BEFORE PLUGGING IN.
FOLLOW ALL INSTRUCTIONS AND HEED ALL WARNINGS.
KEEP THESE INSTRUCTIONS.
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ENGLISH
This device complies with part 15 of the FCC Rules. Operaon is subject to the
following two condions:
1. This device may not cause harmful interference, and
2. This device must accept any interference received, including interference
that may cause undesired operaon.
This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to part 15 of the FCC rules. These limits are designed to
provide reasonable protecon against harmful interference in a residenal
installaon.
This equipment generates, uses and can radiate radio frequency energy and, if not in-
stalled and used in accordance with the instrucons, may cause harmful
interference to radio communicaons.
However, there is no guarantee that interference will not occur in a parcular
installaon. If this equipment does cause harmful interference to radio or
television recepon, which can be determined by turning the equipment o and on, the
user is encouraged to try to correct the interference by one or more of the
following measures:
• Reorient or relocate the receiving antenna.
• Increase the separaon between the equipment and the receiver.
• Connect the equipment into an outlet on a circuit dierent from that to
which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
CAUTION: Any changes or modicaons not expressly approved by the party
responsible for compliance may void the users authority to operate the equipment.
This device complies with CAN ICES-3(B)/NMB-3(B)
COMPLIANCE STATEMENT
JVM410H Head JVM410C Combo
Power (RMS) 100W 100W
Valves 5x ECC83 + 4x EL34 5x ECC83 + 4x EL34
Main Guitar - Input Impedance 470kΩ 470kΩ
Emulated Output - Level +4dBu +4dBu
FX Send Level - selectable -10dBV, +4dBu -10dBV, +4dBu
Weight 22kg 34.5kg
Size (mm) W, H, D 750 x 310 x 215 690 x 510 x 265
TECHNICAL SPECIFICATIONS
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INTRODUCTION
From humble beginnings in 1962 Marshall became a global icon. Synonymous with
the sound of rock and blues rock music, the legendary power and disncve tone of
Marshall ampliers can be heard on many inuenal studio and live recordings from
the past half century. Marshall ampliers have stood the test of me, with some of our
classic products from the ‘60s, ‘70s, ‘80s & ‘90s sll made today at the Marshall factory
in Bletchley, England.
Marshall has over the years earned a reputaon for craing great sounding, dependable,
hard-wearing and hardworking ampliers for all guitarists, and our values haven’t
changed, this remains our primary goal. Through expert R&D and bold design we connue
to innovate, building on our heritage and reputaon as the number one Brish amp
maker.
The all-valve JVM410H and JVM410C are made in England by a skilled and dedicated
workforce whose crasmanship and aenon to detail produce some of the best loved
and most iconic guitar ampliers and speaker cabinets ever made.
The highly acclaimed JVM4 Series is at the apex of six decades of tonal and funconal
evoluon; an evoluon that has been driven not only by our desire to make the best
ampliers in the world , but by our customers—professional arst and amateur enthusiast
alike. At Marshall we fully understand the necessity of achieving the right tone, feel and
funconality to help inspire you to reach your creave potenal.
The JVM4 Series features 4 tonally independent channels, each with 3 modes, oering a
broad tonal palee from which to shape your sound. With the inclusion of an FX loop,
two master volumes and four independent channel reverbs, JVM4 is versale too.
To control JVM4’s wide tonal range and funconality requires a unique footswitching
system. The programmable 6-way Stompware® footcontroller enables you to harness
the power of JVM4, giving you serious control of your sound during performance, either
by switching panel funcons directly or programming groups of panel sengs to form
Presets stored to single footswitch buon.
We sincerely hope that your JVM4 Series amplier proves indispensable and that it
provides you with years of legendary Marshall tone, whatever your playing situaon.
Thank you for choosing Marshall.
- The Marshall Team
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OVERVIEW
CHANNELS, MODES & MEMORY
Presenng the 4 channel, 100 Wa, all-
valve JVM4 amplier (JVM410H head or
JVM410C 2x12” combo). Its 4 channels
feature 3 modes, giving you a total of 12
dierent modes to choose from - each
with its own unique gain structure. Even
though its front panel contains a total of 28
control knobs and 8 LED switches, JVM4 is
simple to understand and operate thanks
to its extremely logical front and rear panel
layouts.
The front panel contains dedicated sets of
controls for each of its 4 channels - CLEAN,
CRUNCH, OD1 & OD2 - plus MASTER and
REVERB secons. Each channel contains
the familiar controls, VOLUME, BASS,
MIDDLE, TREBLE and GAIN. The REVERB
secon consists of 4 level controls, one for
each channel, while the MASTER secon
is comprised of 2 footswitchable master
volumes: MASTER 1/MASTER 2, plus
master RESONANCE and PRESENCE
controls that work universally on all 4
channels.
Each of the 4 channels has 3 switchable
modes. These are selected by the
MODE switch dedicated to each
channel. To select a channel press its
respecve MODE switch or step on the
relevant buon on the supplied 6-way
Stompware® footswitch. To scroll through
the selected channel’s 3 modes keep
pressing the said switch and the colour
of the LED in the switch will change from
green to orange to red and then back to
green. Doing this steps-up the gain level
each me (red being the highest and green
the lowest for each channel) and changes
the channel’s tonal voicing.
When you leave and then reselect a
channel, it will automacally recall the last
acve mode as all 4 channels remember
the last mode they were in unl a change
is made. For instance, if you select the
CRUNCH channel’s orange mode and
then go to the CLEAN channel, when you
reselect the CRUNCH channel it will sll
be in orange mode.
In addion to channel and mode selecon,
other features that are switchable via the
front panel and the footswitch are REVERB
(on/o) MASTER 1 & MASTER 2, and
SERIES/PARALLEL FX LOOP (on/o). All 3
of these funcons are also remembered by
each mode.
To sum up, each of the JVM4’s 12 modes
will remember its most recent REVERB,
FX LOOP and MASTER volume seng.
Addionally, mode setups can also be
saved and recalled to one of 128 locaons
via MIDI.
STOMPWARE® 6-WAY FOOTSWITCH
The JVM410H and JVM410C are supplied
with a Stompware® 6-way programmable
footswitch, which can be connected to the
amp via any standard guitar cable.
Note: The supplied footswitch lead is
unscreened and not suitable for guitar.
The footswitch features 7 LEDS: CLEAN,
CRUNCH, OD1, OD2, MASTER, REVERB
and FX. The LEDs for each of the 4
channels are 3-coloured: green, orange
and red, visually telling you which channel
and mode is selected alongside the status
of MASTER, REVERB and FX LOOP.
The supplied Stompware® footswitch
enables you to assign any of its 6 buons
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ENGLISH
to instantly recall any front panel switch
funcon (Switch Store Mode) or complete
channel setup (Preset Store Mode) in any
order and combinaon.
SWITCH STORE MODE
In Switch Store mode any footswitch
buon is assigned to act as any one of the
amp’s front panel switches: CHANNEL/
MODE, REVERB on/o, MASTER 1/2 and
FX LOOP on/o.
If a footswitch buon is assigned to select
a parcular channel, once it has been
acvated that footswitch buon can be
used to scroll through the three modes,
just like its respecve front panel switch.
PRESET STORE MODE
In Preset Store mode each footswitch
buon can be programmed to instantly
call up a combinaon of front panel switch
opons to form a Preset. For example, you
could program the footswitch so that:
Buon #1 = CRUNCH channel, green
mode with MASTER volume ‘1’, REVERB
‘on’ and FX LOOP ‘o’.
Buon #2 = CLEAN channel, red mode
with MASTER volume ‘2’, REVERB ‘o’ and
FX LOOP ‘on’.
All Preset sengs are stored within the
footswitch; this means that it can be
plugged into any JVM4 amplier and your
stored footswitch sengs will be instantly
recalled.
Details on how to program your footswitch
can be found later in this manual (Front
Panel Function #10).
POWER AMP
The power-stage of the 100 Wa JVM4
is based on the one found in the JCM800
2203 and 1959 Superlead ampliers
responsible for the legendary Marshall
roar. It has been adjusted to suit the wide
variety of tones found in JVM4 channels
and modes. This power amp secon
features PRESENCE and RESONANCE
controls to help shape the overall tone of
your JVM4 amplier.
Your JVM4 is also equipped with a silent
recording mode. When the STANDBY
switch is in the OFF posion, the power-
stage is disabled, but the rest of the
amplier remains fully operaonal.
REVERB
The JVM410H and JVM410C are
equipped with studio quality reverb,
routed in parallel to the main signal and
mixed by means of a valve. When reverb
is engaged no degradaon of the direct
signal occurs and when it’s ‘o’ it is
eecvely removed from the circuit. Each
of the JVM4’s channels also has its own
dedicated REVERB level control.
The REVERB switching has been designed
to avoid abrupt cut os in the reverb tail,
so when changing from channel to channel
or switching reverb ‘o’, its tail decays
naturally.
STANDBY & SILENT RECORDING
(Front Panel Function #11)
When the amplier is in STANDBY (OFF)
the whole preamp secon connues
running at its nominal voltages whilst
the power-stage remains in a ‘standby’
status. This allows the amplier to be
used for silent recording or for preamp
purposes using the EMULATED LINE OUT
(Rear Panel Function #16).
OVERVIEW (CONT.)
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NOTES
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FRONT PANEL FUNCTIONS
ENGLISH
1. INPUT
Input jack socket for your guitar cable. Use
a good quality screened/shielded guitar
cable to help prevent noise interference.
2. CLEAN CHANNEL
CLEAN GREEN MODE: This is the cleanest
of the three modes and, in keeping with
tradional clean amps, it uses a simple
and straighorward circuit, keeping the
signal as pure as possible. In this mode the
channel’s VOLUME control is taken out of
circuit as is the case in vintage ampliers
of this nature. This is the only mode where
this happens.
CLEAN ORANGE MODE: By adding another
gain stage aer the tone stack we get a
punchier sound that’s easy to overdrive.
As in the rest of the modes the channel’s
VOLUME control is now acve.
CLEAN RED MODE: This mode pushes the
original clean sound even more and trans-
forms into a pseudo high gain channel with
the addion of yet another gain stage aer
the tone stack.
In keeping with the classic clean amps of
yesteryear, all three modes on this channel
feature what is known as a pre-gain tone
GAIN
0 10
GAIN
INPUT
POWER STANDBY
/ SILENT RECORDING
0 10
REVERBMASTER
OD1
MODE
CLEAN
MODE
CRUNCH
MODE
OD2
MODE
FOOTSWITCH/
MIDI PROGRAM
FX LOOP
TREBLE
0 10
TREBLE
0 10
MIDDLE
0 10
MIDDLE
0 10
BASS
0 10
BASS
0 10
VOLUME
(Orange & Red)
0 10
VOLUME
0 10
GAIN
0 10
GAIN
0 10
TREBLE
0 10
TREBLE
0 10
MIDDLE
0 10
MIDDLE
0 10
BASS
0
10
BASS
0
10
VOLUME
0 10
VOLUME
0 10
RVB
CLEAN
0 10
RVB CRUNCH
0 10
RVB
OD1
0 10
RVB OD2
0 10
MASTER
1
0 10
PRESENCE
0 10
MASTER
2
0 10
RESONANCE
0 10
MASTER REVERB
OD1
OD2
CLEAN
CRUNCH
O
I
OFF
ON
JVM410H FRONT PANEL
89
10 7 6
1112
GAIN
0 10
VOLUME
INPUT
POWERSTANDBY
/ SILENT RECORDING
0 10
REVERB MASTER
OD2
MODE
CLEAN
MODE
CRUNCH
MODE
OD1
MODE
FX LOOP
FOOTSWITCH/
MIDI PROGRAM
BASS
0 10
BASS
0 10
MIDDLE
0 10
MIDDLE
0 10
TREBLE
0 10
TREBLE
0 10
VOLUME
(Orange & Red)
0 10
GAIN
0 10
VOLUME
0 10
VOLUME
0 10
BASS
0
10
BASS
0
10
MIDDLE
0 10
MIDDLE
0 10
TREBLE
0 10
TREBLE
0 10
GAIN
0 10
GAIN
0 10
RVB
OD2
0 10
RVB OD1
0 10
RVB
CRUNCH
0 10
RVB CLEAN
0 10
RESONANCE
0 10
MASTER 2
0 10
PRESENCE
0 10
MASTER 1
0 10
MASTER
REVERB
OD2
OD1CLEAN
CRUNCH
O
I
OFF
ON
JVM410C FRONT PANEL
1 42
3 5
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ENGLISH
stack (i.e. the tone network lies before the
channel’s main gain stage). The reverse (i.e.
the tone network being aer the main gain
stage) is typical of most Marshall ampliers
and, as a result, the CLEAN channel’s tone
controls work in a slightly dierent way than
you might expect; in addion to controlling
the tone of the channel they also aect how
it reacts in terms of gain, allowing you to
shape how the signal distorts.
For example, turning up the MIDDLE
control on higher GAIN sengs will focus
the distoron there, making your sound
‘sing’ in a tradional blues/rock way. Also,
because of the channels’ ‘tone then gain’
topology, when a lot of GAIN is dialled in
(especially in the case of the red mode), it
may appear that its tone controls aren’t
doing as much as you’d expect or sound
over distorted. This is because the signal
is being distorted aer the tone stage,
minimising the eecveness of the BASS,
MIDDLE and TREBLE controls.
3. CRUNCH CHANNEL
At this point JVM4 reverts to the
more typical Marshall preamp circuit
characterisc of ‘gain then tone’. This is
also true of the OD1 and OD2 channels.
GAIN
0 10
GAIN
INPUT
POWER STANDBY
/ SILENT RECORDING
0 10
REVERBMASTER
OD1
MODE
CLEAN
MODE
CRUNCH
MODE
OD2
MODE
FOOTSWITCH/
MIDI PROGRAM
FX LOOP
TREBLE
0 10
TREBLE
0 10
MIDDLE
0 10
MIDDLE
0 10
BASS
0 10
BASS
0 10
VOLUME
(Orange & Red)
0 10
VOLUME
0 10
GAIN
0 10
GAIN
0 10
TREBLE
0 10
TREBLE
0 10
MIDDLE
0 10
MIDDLE
0 10
BASS
0
10
BASS
0
10
VOLUME
0 10
VOLUME
0 10
RVB
CLEAN
0 10
RVB CRUNCH
0 10
RVB
OD1
0 10
RVB OD2
0 10
MASTER
1
0 10
PRESENCE
0 10
MASTER
2
0 10
RESONANCE
0 10
MASTER REVERB
OD1
OD2
CLEAN
CRUNCH
O
I
OFF
ON
135
4 2
GAIN
0 10
VOLUME
INPUT
POWERSTANDBY
/ SILENT RECORDING
0 10
REVERB MASTER
OD2
MODE
CLEAN
MODE
CRUNCH
MODE
OD1
MODE
FX LOOP
FOOTSWITCH/
MIDI PROGRAM
BASS
0 10
BASS
0 10
MIDDLE
0 10
MIDDLE
0 10
TREBLE
0 10
TREBLE
0 10
VOLUME
(Orange & Red)
0 10
GAIN
0 10
VOLUME
0 10
VOLUME
0 10
BASS
0
10
BASS
0
10
MIDDLE
0 10
MIDDLE
0 10
TREBLE
0 10
TREBLE
0 10
GAIN
0 10
GAIN
0 10
RVB
OD2
0 10
RVB OD1
0 10
RVB
CRUNCH
0 10
RVB CLEAN
0 10
RESONANCE
0 10
MASTER 2
0 10
PRESENCE
0 10
MASTER 1
0 10
MASTER
REVERB
OD2
OD1
CLEAN
CRUNCH
O
I
OFF
ON
10 11 127
6 8 9
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CRUNCH GREEN MODE: This mode shares
the preamp topology of the classic Mar-
shall JTM45/1959 Plexi™ models
(i.e.: gain + gain + tone) but with a bit more
gain than is found in the originals.
CRUNCH ORANGE MODE: This mode is
reminiscent of the JCM800 2203 amplier,
a staple of hard rock. The gain structure is
gain + gain + gain + tone.
CRUNCH RED MODE: This shares the topology
of the orange mode, but with more gain,
giving you sounds similar to a hot-rodded
JCM800.
4. OD1 CHANNEL
OD1 GREEN MODE: This is very similar to
the hot-rodded JCM800 sound found in
crunch red mode, allowing you to dial-in
two disnctly dierent yet similar crunch
sounds if you so wish - one in each channel.
OD1 ORANGE MODE: This adds another gain
stage to the OD1 green mode, resulng in
a sound that’s perfect for singing leads and
hard rock/heavy metal tones.
OD1 RED MODE: Adds more gain to the OD1
orange for a high gain Marshall sound.
5. OD2 CHANNEL
This channel is similar to the OD1 channel
but with even more gain and a slightly
dierent tone network with the middle
control shied down to being centred
around 500hz instead of the more typical
Marshall value of 650hz. The result is 3
high gain modes that are ideal for both lead
and modern rhythm metal tones.
MASTER SECTION
6. REVERB
Pressing the REVERB buon switches the
reverb ON and OFF in the current channel.
Each channel has its own reverb control
allowing individual channel reverb level
sengs: RVB CLEAN, RVB CRUNCH, RVB
OD1 and RVB OD2.
7. MASTER 1 / MASTER 2
These are the master volume controls
of the amplier. They can be assigned
individually to each of the modes as you
wish and their seng will be remembered.
8. PRESENCE AND RESONANCE
These controls are power-stage funcons
and only have eect when playing through
a speaker (not in SILENT RECORDING).
They aect how the power amplier reacts
to the connected speakers and how much
control the amplier has over them.
Increasing the RESONANCE control
emphasises speaker resonance for an
improved bass response and lower-end
thud. In the same way, increasing the
PRESENCE control emphasises the
speaker’s higher frequencies, making the
sound brighter and more ‘present’.
PRESENCE and RESONANCE constute
a powerful power-stage EQ, allowing
responses from a ‘ ’ shape when they are
fully o, which is felt as a mid-boost, to a
‘v’ shape when they are turned clockwise,
giving a more scooped sound. Again, the
eecveness of these controls is highly
dependent on the kind of connected
speakers. Care has to be taken to avoid
over excursion of the speaker cones in high
resonance sengs.
9. FX LOOP
Pressing the FX LOOP buon switches
the FX loop ON and OFF in the current
channel.
The FX loop is programmable and features
a MIX control on the rear panel. The FX
FRONT PANEL FUNCTIONS (CONT.)
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ENGLISH
loop is located aer the preamp in the
signal chain, right before the reverb and
serial loop circuits. Pressing the FX LOOP
switch engages this FX loop.
10. FOOTSWITCH / MIDI PROGRAM
This switch has a dual funcon:
Pressing it once we enter the
FOOTSWITCH PROGRAM mode. It is
indicated by a connuous red light.
Pressing it twice we enter the MIDI
PROGRAM mode. It is indicated by a
blinking red light.
FOOTSWITCH PROGRAM AND USE
The JVM4 Series features Stompware®
footswitching. The footswitch connecon
to the amplier requires a standard mono
1/4” jack to jack cable. Any guitar lead will
work and praccally there should be no
limit in its length.
When the front panel FOOTSWITCH
/ MIDI PROGRAM switch is ‘o’, the
footswitch operates in normal mode and
executes the commands the moment a
buon is pressed down.
If you enter the FOOTSWITCH PROGRAM
mode (LED red) you will be able to program
the footcontroller, but nevertheless the
footcontroller and the amplier will remain
fully operaonal with the only dierence
being that the commands will be executed
when releasing a buon, as opposed to the
normal mode.
The 6-way Stompware® footswitch has
2 modes of operaon: Preset Store and
Switch Store.
PRESET STORE MODE
Any of the footswitch buons can be
congured to store the current amplier
status. The current channel, master, FX and
reverb status will be stored and recalled
when the respecve footswitch buon is
pressed.
To store the current status:
a) Set the amplier to FOOTSWITCH
PROGRAM mode (red light ON).
b) Press and hold the desired switch for
about 3 seconds.
c) The footswitch FX LED will icker a
couple of mes indicang that the preset
has been stored.
SWITCH STORE MODE
Any of the footswitch buons can be
congured to control the front panel
switches, with the amplier reacng in
exactly the same way as when you operate
the switches on the front panel.
All the front panel switches can be mapped
to any of the buons without limitaon.
The only excepon is the FOOTSWITCH
/ MIDI PROGRAM key, which cannot be
assigned to the footswitch.
To assign any of the front panel buons
(except FOOTSWITCH / MIDI PROGRAM)
to any of the footswitch buons:
a) Set the amplier to FOOTSWITCH
PROGRAM mode (red light ON).
b) Press and hold the desired buon.
c) While holding the buon down, in less
than 3 seconds, press the front panel
buon that you want to map.
d) The footswitch FX LED will icker a
couple of mes indicang that the switch
has been mapped.
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ENGLISH
FRONT PANEL FUNCTIONS (CONT.)
e) From now on the selected buon will act
exactly in the same way as if you press the
related front panel buon.
Front panel buons and presets can be
assigned as wished without limitaon
and in any order (again, except the
FOOTSWITCH / MIDI PROGRAM switch).
The footswitch’s conguraon is stored
within the footswitch itself, not in the
amplier. Reseng the amplier will not
aect the footswitch conguraon as well.
The footswitch can be hot-swapped
and synchronises itself with any JVM4
amplier aer connecon. However it is
recommended to connect the footswitch
lead to the footcontroller rst and then
connect it to the amplier.
MIDI OPERATION
Pressing the FOOTSWITCH / MIDI
PROGRAM buon twice puts the amplier
in MIDI waing mode; the LED will
ash unl a valid MIDI program change
command is received.
On recepon of a MIDI program change
command the amplier stores the current
status (channel + FX + reverb + master
sengs) in the MIDI program number
received. It is possible to store up to 128
dierent MIDI presets.
To exit this status without waing
for incoming MIDI data press the
FOOTSWITCH / MIDI PROGRAM buon
again.
By default the amplier is congured to
listen to MIDI channel #1, but it can be
changed to listen to any of the 16 MIDI
channels as follows:
a) Switch the amplier power o (POWER
switch, not STANDBY).
b) Press and hold the FOOTSWITCH /
MIDI PROGRAM buon.
c) Switch the amplier power on.
d) Release the FOOTSWITCH / MIDI
PROGRAM buon, the LED will start to
ash.
e) Send any MIDI command using your
MIDI pedalboard or any other MIDI
equipment.
f) The amplier will detect which channel
came in and congure itself to listen to that
MIDI channel only.
g) From now on any MIDI preset you had
previously stored will be acvated only
on the new channel regardless of what
channel you used before, this allows a fast
reconguraon should there be a MIDI
conict with any other outboard equipment.
Note: If you want to exit the MIDI channel
selection without any action press the
FOOTSWITCH / MIDI PROGRAM button
while waiting for MIDI data.
11. STANDBY & SILENT RECORDING
The STANDBY switch is used in
conjuncon with the POWER switch to
‘warm up’ the amplier before use and to
prolong the life of the output valves.
When the amplier is in STANDBY (OFF)
the whole preamp secon connues
running at its nominal voltages whilst the
power-stage remains in a ‘standby’ status.
This allows the amplier to be used for
silent recording or for preamp purposes
using the EMULATED LINE OUT (Rear
Panel Function #16).
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ENGLISH
Only when the amplier is in ‘standby’
(STANDBY switch OFF) can the amplier
be used without a speaker load. Always
ensure a speaker load is connected when
leaving SILENT RECORDING: i.e. when
switching the STANDBY switch ON to
engage the amplier.
12. POWER
Mains power on/o switch.
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REAR PANEL FUNCTIONS
13. MAINS INPUT
Connects the amplier to the mains
electricity supply.
Note: The MAINS INPUT socket has an
integrated fuse compartment. Ensure that
the value of a replacement fuse matches the
labelling on the amplier rear panel. You
MUST ALWAYS switch the amplier OFF
and disconnect it from the mains electricity
supply before attempting to access the fuse
compartment. If in doubt, contact your
Marshall dealer.
14. MIDI
Connect any external MIDI gear to the
MIDI IN socket. A copy of the signal in this
connector will be available on the MIDI
THRU socket to allow the daisy chaining of
MIDI equipment.
Note: JVM4 only accepts incoming data and it
is not able to send any MIDI commands.
15. FOOTSWITCH
Connect the supplied Stompware®
footswitch using any standard 1/4”
jack mono lead. Using any other type of
footcontroller or footswitch rather than
the one supplied will have no eect and
will be ignored by the amplier.
ENGLISH
JVM410 - COMBO
16151413
JVM410 - HEAD
19 18 17
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ENGLISH
16. LINE OUT
The pre master volume signal, processed
through a 4x12” speaker cabinet emulator
and electronically balanced, is made
available at this connector.
17. POWER AMP INSERT / SERIAL LOOP
This is a passive loop which connects
right before the master volume in the
signal path. It is a line level loop so it is
recommended to only use high headroom
devices to avoid signal degradaon.
Plugging only into the return jack allows
the use of the JVM4’s power-stage,
overriding the preamp.
MASTER controls and the LINE OUT are
located aer the POWER AMP INSERT/
SERIAL LOOP so it is sll possible to take
advantage of those features when using an
external preamp. The loop can be taken o
the circuit by pressing the BYPASS switch
(the BYPASS/ACTIVE switch cannot be
programmed).
18. SERIAL / PARALLEL FX LOOP
JVM4 is equipped with a SERIAL/
PARALLEL FX LOOP. Connect your
external FX gear input to the SEND jack,
and the FX output to the RETURN jack. As
described previously, the FX loop can be
switched on/o from the front panel and
17 18 19
14 131516
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ENGLISH
REAR PANEL FUNCTIONS (CONT.)
the amount of eect can be dialled in with
the MIX control.
The +4dBu/-10dBV switch allows you
to congure the loop for use with either
rack equipment (+4dBu seng) or with
stompbox level FX (-10dBV seng).
When MIX is set to WET all of the signal
from external FX goes through the FX
LOOP. Add more direct (unprocessed)
signal by turning MIX towards DRY. This
allows you to mix any amount of the
external FX without losing or degrading
the direct signal quality.
When mixing the WET and DRY signals
the external FX processor’s output should
be congured to remove the direct
(unprocessed) signal or an unpleasant
phasing eect may occur when mixing
it again in the amplier. If the amplier
sounds thin aer connecng external
FX check that no direct signal is being
returned from the processors output.
Note: If the FX loop is switched ON and
the MIX control is set to WET without an
external processor connected, the amplier
will be muted.
19. LOUDSPEAKERS
There are 5 speaker outputs available on
the rear panel. They are labelled according
to the intended impedances:
1 x16 OHM
Connect a 16 Ohm speaker cabinet to this
jack.
1 x 8 OHM/2 x 16 OHM
Connect a single 8 Ohm speaker cabinet or
two 16 Ohm guitar cabinets.
1 x 4 OHM/2 x 8 OHM
Connect a single 4 Ohm speaker cabinet
or two 8 Ohm speaker cabinets.
WARNING: Although JVM4 has 5 speaker
outputs never attempt to connect more
speakers than rated. The safe combinations
are 1x16 Ohm, 1x8 Ohm, 2x16 Ohm,
1x4 Ohm or 2x8 Ohm. Any other speaker
conguration may stress the power amplier
section and in extreme cases may lead to valve
and/or output transformer failure. NEVER
use the JVM410H or JVM410C without a
speaker load.
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ENGLISH
REAR PANEL FUNCTIONS (CONT.)
the amount of eect can be dialled in with
the MIX control.
The +4dBu/-10dBV switch allows you
to congure the loop for use with either
rack equipment (+4dBu seng) or with
stompbox level FX (-10dBV seng).
When MIX is set to WET all of the signal
from external FX goes through the FX
LOOP. Add more direct (unprocessed)
signal by turning MIX towards DRY. This
allows you to mix any amount of the
external FX without losing or degrading
the direct signal quality.
When mixing the WET and DRY signals
the external FX processor’s output should
be congured to remove the direct
(unprocessed) signal or an unpleasant
phasing eect may occur when mixing
it again in the amplier. If the amplier
sounds thin aer connecng external
FX check that no direct signal is being
returned from the processors output.
Note: If the FX loop is switched ON and
the MIX control is set to WET without an
external processor connected, the amplier
will be muted.
19. LOUDSPEAKERS
There are 5 speaker outputs available on
the rear panel. They are labelled according
to the intended impedances:
1 x16 OHM
Connect a 16 Ohm speaker cabinet to this
jack.
1 x 8 OHM/2 x 16 OHM
Connect a single 8 Ohm speaker cabinet or
two 16 Ohm guitar cabinets.
1 x 4 OHM/2 x 8 OHM
Connect a single 4 Ohm speaker cabinet
or two 8 Ohm speaker cabinets.
WARNING: Although JVM4 has 5 speaker
outputs never attempt to connect more
speakers than rated. The safe combinations
are 1x16 Ohm, 1x8 Ohm, 2x16 Ohm,
1x4 Ohm or 2x8 Ohm. Any other speaker
conguration may stress the power amplier
section and in extreme cases may lead to valve
and/or output transformer failure. NEVER
use the JVM410H or JVM410C without a
speaker load.
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ENGLISH
HINTS AND TIPS
FACTORY RESET
This will erase all the MIDI presets and set
MIDI recepon channel to #1. Please note
that once the memory is erased it cannot
be recovered:
a) Switch the amplier o (POWER switch
OFF).
b) Whilst pressing and holding the CLEAN
CHANNEL/ GAIN switch, switch the
amplier on (POWER switch ON). The 4
channel LEDs will glow red.
c) Release the switch.
d) To conrm the factory reset press the
CRUNCH MODE switch.
e) If you want to abort the reset, press any
other key.
FOOTSWITCH RESET
To restore factory sengs:
a) Unplug the footswitch at any of the
cable sides.
b) Press and hold switch #6 (right switch).
c) Plug in the footswitch cord.
d) Release the switch and the FX led will
start blinking.
e) If you want to erase the footswitch
memory press the switch #5. To keep
the memory press any of the #1 to #4
switches. Please note that once the
memory is erased it cannot be recovered.
f) Release the switch and the footswitch
will synchronise with the amplier.
The factory default is as follows:
FSW #1: CLEAN FSW #2: CRUNCH
FSW #3: OD1 FSW #4: OD2
FSW #5: MASTER FSW #6: REVERB
HINTS
Hint 1:
It is possible to use dierent modes in the
same channel with dierent volumes to
avoid imbalance which can be especially
interesng in the CLEAN channel. To
do this simply create 2 presets in the
footswitch assigning MASTER 1 or
MASTER 2 to any of the modes. If you do
not connect any eect to the SERIAL /
PARALLEL FX LOOP the MIX control can
be used to act like an extra volume control
in any of the channels.
Hint 2:
To have a tuner output mung the
amplier, connect the tuner to the FX
LOOP SEND and select the CLEAN
channel. Turn the MIX control to WET
and switch the FX LOOP on. Store this
preset as described before and label it
for example as ‘tuner’. Obviously in this
conguraon it is not possible to connect
any other eect to the FX LOOP.
Hint 3:
A note about using 2 heads simultaneously
– The suggested procedure is connect the
‘master’ head PREAMP OUT to the ‘slave’
head POWER AMP IN and switch the
POWER AMP INSERT to ACTIVE in the
‘slave’ amplier.
In order to track the MASTER volume
sengs in both heads it is suggested to
use MIDI control with both ampliers
programmed in the same way. Connect
the MIDI IN of one of the ampliers to
the MIDI THROUGH of the other and
the pedalboard or MIDI equipment to the
remaining MIDI IN.
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AVERTISSEMENT ! CONSIGNES DE SÉCURITÉ IMPORTANTES
FRANÇAIS
AVERTISSEMENT !
Avant d'aller plus loin, vérier que votre
amplicateur est compable avec votre alimentaon
électrique. En cas de doute, s'adresser à un
technicien qualié ; votre vendeur Marshall est en
mesure de vous conseiller à ce sujet.
ENTRÉE SECTEUR ET FUSIBLE :
La tension nominale d'entrée spécique
correspondant à votre amplicateur est indiquée
sur le panneau arrière de l'amplicateur.
Votre amplicateur est fourni avec un cordon
d'alimentaon détachable à brancher dans la PRISE
SECTEUR sur le panneau arrière de l'amplicateur
(Fonctions panneau arrière #13). Le type et la valeur
correcte des fusibles secteur sont indiqués sur le
panneau arrière de l'amplicateur. NE JAMAIS
tenter de dériver le fusible ou d'installer un fusible
dont le type ou la valeur ne correspondent pas.
TRANSPORT DE VOTRE ÉQUIPEMENT :
Vérier que votre amplicateur est éteint et
débranché de l'alimentaon secteur et que tous
les câbles pouvant être débranchés ont été
déconnectés de l'équipement avant de déplacer
l'amplicateur.
INFORMATIONS IMPORTANTES RELATIVES À
L'INSTALLATION :
1. En cas d'ulisaon de la tête JVM410H ou du
combo JVM410C avec un caisson haut-parleur
supplémentaire, s'assurer que les haut-parleurs sont
connectés aux jacks haut-parleurs d'impédance
correcte sur le panneau arrière de l'amplicateur.
Consulter le guide d'ulisaon des HAUT-
PARLEURS contenu dans le présent guide pour plus
d'informaons concernant les correspondances
d'impédance (Fonctions panneau arrière #19).
AVERTISSEMENT Le non-respect des consignes
ci-dessus risque d'endommager votre amplicateur.
Lors du raccordement d'un caisson haut-parleur,
veiller à uliser un câble pour haut-parleur correct.
Ne jamais uliser à cet eet un câble de guitare
blindé.
2. Vérier que le commutateur d'ALIMENTATION
(Fonctions panneau avant #12) est en posion OFF
(Arrêt).
3. Brancher le câble d'alimentaon fourni à
l'ENTRÉE ALIMENTATION (Fonctions panneau arrière
#13) d'abord, puis sur la source d'alimentaon
électrique.
4. Vérier que les commandes MASTER 1 et
MASTER 2 sur le panneau avant sont réglées sur
zéro (Fonctions panneau avant #7).
5. Brancher votre guitare dans une prise jack
d'ENTRÉE sur le panneau avant (Fonctions panneau
avant #1).
6. Vérier que l'interrupteur STANDBY (Veille)
(Fonctions panneau avant #11) est en posion OFF
(Arrêt).
7. Régler l'interrupteur d'ALIMENTATION sur
MARCHE (I) sur le panneau avant et aendre deux
minutes avant de passer au point 8.
8. Acver l'amplicateur en réglant l'interrupteur
STANDBY sur ON (Marche).
9. Augmenter le volume sur le niveau souhaité :
l'amplicateur est prêt.
LIRE ATTENTIVEMENT CE MANUEL AVANT DE BRANCHER
L'ÉQUIPEMENT.
SUIVRE TOUTES LES INSTRUCTIONS ET TENIR COMPTE DES
AVERTISSEMENTS.
CONSERVER CES INSTRUCTIONS
Book-00086-01 - 04/17 (JVM4_Manual86_FINAL_19.04.17).indd 18 28/04/2017 11:14

AVERTISSEMENT ! CONSIGNES DE SÉCURITÉ IMPORTANTES
FRANÇAIS
AVERTISSEMENT !
Avant d'aller plus loin, vérier que votre
amplicateur est compable avec votre alimentaon
électrique. En cas de doute, s'adresser à un
technicien qualié ; votre vendeur Marshall est en
mesure de vous conseiller à ce sujet.
ENTRÉE SECTEUR ET FUSIBLE :
La tension nominale d'entrée spécique
correspondant à votre amplicateur est indiquée
sur le panneau arrière de l'amplicateur.
Votre amplicateur est fourni avec un cordon
d'alimentaon détachable à brancher dans la PRISE
SECTEUR sur le panneau arrière de l'amplicateur
(Fonctions panneau arrière #13). Le type et la valeur
correcte des fusibles secteur sont indiqués sur le
panneau arrière de l'amplicateur. NE JAMAIS
tenter de dériver le fusible ou d'installer un fusible
dont le type ou la valeur ne correspondent pas.
TRANSPORT DE VOTRE ÉQUIPEMENT :
Vérier que votre amplicateur est éteint et
débranché de l'alimentaon secteur et que tous
les câbles pouvant être débranchés ont été
déconnectés de l'équipement avant de déplacer
l'amplicateur.
INFORMATIONS IMPORTANTES RELATIVES À
L'INSTALLATION :
1. En cas d'ulisaon de la tête JVM410H ou du
combo JVM410C avec un caisson haut-parleur
supplémentaire, s'assurer que les haut-parleurs sont
connectés aux jacks haut-parleurs d'impédance
correcte sur le panneau arrière de l'amplicateur.
Consulter le guide d'ulisaon des HAUT-
PARLEURS contenu dans le présent guide pour plus
d'informaons concernant les correspondances
d'impédance (Fonctions panneau arrière #19).
AVERTISSEMENT Le non-respect des consignes
ci-dessus risque d'endommager votre amplicateur.
Lors du raccordement d'un caisson haut-parleur,
veiller à uliser un câble pour haut-parleur correct.
Ne jamais uliser à cet eet un câble de guitare
blindé.
2. Vérier que le commutateur d'ALIMENTATION
(Fonctions panneau avant #12) est en posion OFF
(Arrêt).
3. Brancher le câble d'alimentaon fourni à
l'ENTRÉE ALIMENTATION (Fonctions panneau arrière
#13) d'abord, puis sur la source d'alimentaon
électrique.
4. Vérier que les commandes MASTER 1 et
MASTER 2 sur le panneau avant sont réglées sur
zéro (Fonctions panneau avant #7).
5. Brancher votre guitare dans une prise jack
d'ENTRÉE sur le panneau avant (Fonctions panneau
avant #1).
6. Vérier que l'interrupteur STANDBY (Veille)
(Fonctions panneau avant #11) est en posion OFF
(Arrêt).
7. Régler l'interrupteur d'ALIMENTATION sur
MARCHE (I) sur le panneau avant et aendre deux
minutes avant de passer au point 8.
8. Acver l'amplicateur en réglant l'interrupteur
STANDBY sur ON (Marche).
9. Augmenter le volume sur le niveau souhaité :
l'amplicateur est prêt.
LIRE ATTENTIVEMENT CE MANUEL AVANT DE BRANCHER
L'ÉQUIPEMENT.
SUIVRE TOUTES LES INSTRUCTIONS ET TENIR COMPTE DES
AVERTISSEMENTS.
CONSERVER CES INSTRUCTIONS
Book-00086-01 - 04/17 (JVM4_Manual86_FINAL_19.04.17).indd 18 28/04/2017 11:14
FRANÇAIS
Cet appareil est conforme à la pare 15 des Régulaons FCC. L’exploitaon est autorisée aux deux
condions suivantes :
1. Cet appareil ne doit pas produire de brouillage, et
2. l’appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est suscepble
d’en compromere le fonconnement.
Cet équipement a été testé et trouvé conforme aux limites applicables à un appareil numérique de Classe B,
suivant la Pare 15 des Règles FCC. Ces limites sont conçues pour apporter une protecon raisonnable
contre les interférences nuisibles dans un environnement résidenel.
Cet équipement génère, ulise, et peut émere de l’énergie de fréquence radio et, s’il n’est pas installé et
ulisé conformément aux consignes, risque de causer des interférences nuisibles aux communicaons radio.
Il n'existe toutefois aucune garane que ces interférences n'auront pas lieu dans une installaon parculière.
Si cet équipement cause des interférences nuisibles à la récepon radiophonique ou télévisée, ce qui peut
être établi en éteignant et rallumant l'équipement, l'ulisateur est encouragé à prendre une plusieurs des
mesures suivantes pour résoudre ces interférences :
• Réorienter ou déplacer l'antenne de récepon.
• Augmenter la distance entre l'équipement et le récepteur.
• Brancher l'équipement dans une sore circuit diérente de celle dans laquelle le récepteur est
branché.
• Demander l'aide de son revendeur ou d'un technicien radio/TV expérimenté.
MISE EN GARDE : Tout changement ou modicaon eectué sans avoir été expressément approuvé par la
pare responsable de sa conformité risque d'annuler le droit d'exploitaon de l'équipement par son
ulisateur.
Cet équipement est conforme aux normes CAN ICES-3(B)/NMB-3(B)
DÉCLARATION DE CONFORMITÉ
Tête JVM410H Combo JVM410C
Puissance (RMS) 100W 100W
Lampes 5x ECC83 + 4x EL34 5x ECC83 + 4x EL34
Guitare principale - Impédance d'entrée 470kΩ 470kΩ
Sortie émulée - Niveau +4dBu +4dBu
Niveau d'envoi FX (Effet) - Sélectionnable -10dBV, +4dBu -10dBV, +4dBu
Poids 22kg 34,5kg
Taille (mm) W, H, D 750 x 310 x 215 690 x 510 x 265
SPÉCIFICATIONS TECHNIQUES
Book-00086-01 - 04/17 (JVM4_Manual86_FINAL_19.04.17).indd 19 28/04/2017 11:14

FRANÇAIS
INTRODUCTION
Après des débuts modestes en 1962, Marshall s'est hissé au rang d'icône mondiale. Indissociables des
sons de la musique rock et blues rock, la puissance légendaire et le ton inimitable des amplicateurs
Marshall s'illustrent sur de nombreux enregistrements studio et live des cinquante dernières années. Les
amplicateurs Marshall ont résisté au temps, et certains de nos classiques des années '60, '70, '80 & '90 sont
encore fabriqués à l'usine Marshall de Bletchley, en Angleterre.
Au l des ans, Marshall s'est forgé la réputaon de fabriquer des amplicateurs robustes, solides, ables
à la qualité sonore exceponnelle pour tous les guitaristes, et nos valeurs n'ont pas changé, cela demeure
notre objecf premier. Grâce à l'experse de nos travaux de R&D et à une concepon audacieuse, nous
connuons d'innover, forts de notre héritage et de notre réputaon de numéro un des fabricants d'amplis
britanniques.
Les amplis à lampes JVM410H et JVM410C sont fabriqués en Angleterre par une équipe qualiée et
spécialisée dont le talent et le sens du détail produisent des amplicateurs et caissons haut-parleurs parmi
les plus emblémaques et les plus appréciés au monde.
La très appréciée Série JVM4 est à la pointe de six décennies d'évoluon tonale et fonconnelle ; cee
évoluon répond non seulement à notre désir de fabriquer les meilleurs amplicateurs du monde, mais
aussi à l'enthousiasme de nos clients, arstes professionnels et amateurs. Chez Marshall, nous comprenons
la nécessité de produire le son, la sensaon et la fonconnalité justes pour vous inspirer et contribuer à
l'exploitaon de tout votre potenel créaf.
La Série JVM4 comprend 4 canaux tonalement indépendants, chacun équipé de 3 modes, pour une palee
tonale très riche au service de votre son. Embarquant en outre une boucle FX (Eet), deux volumes Master
et quatre Reverbs de canaux indépendants, la série JVM4 est aussi très polyvalente.
Le contrôle de la gamme tonale et de la fonconnalité de JVM4 nécessite un système de pédalier unique.
La pédale programmable à 6 boutons Stompware® vous permet de canaliser la puissance de JVM4, pour
un réel contrôle de votre son pendant le jeu, soit en acvant directement les foncons panneaux, soit en
programmant des groupes de paramètres des panneaux pour former des Préréglages enregistrés sur un
bouton unique du pédalier.
Nous espérons sincèrement que votre amplicateur de Série JVM4 vous deviendra indispensable, et vous
apportera le son légendaire de Marshall pour des années à venir, quel que soit votre type de jeu.
Merci d'avoir choisi Marshall.
L'équipe Marshall
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