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From Jim Marshall
I would like to thank you personally for selectingone of our new
‘JVM’ amplifiers.
Since I started Marshall Amplification in 1962 Ihave witnessed
some incredible breakthroughsand advances in amplifier design
technology,such as master volume amps, channelswitching, reverb,
effects loops, MIDItechnology, speaker emulation and digitaleffects
processing, to name just a few. Thesemay all seem commonplace
features nowadaysbut that certainly wasn't always the case.However,
the same values that were present inthe first Marshalls are still
very much here today:meticulous workmanship, reliability, stylish
looksand, above all, great Marshall tone.
As a musician myself I fully understand the necessity
ofachieving the right tone and feel to help inspire guitariststo
reach their full creative potential - be they aspiringbeginners or
more seasoned players. With this in mind I set myexperienced
R&D team the task of designing a new range ofamplifiers that
truly captured the essence of the Marshall sound while boasting
thevery latest technological advances.
The result is the JVM Series - our latest range of all valve
amplifiers that combine allof the aforementioned values plus a few
extra attributes and, of course, all of themagical Marshall tone
you could ever want. I am proud to say that the new JVMSeries is
truly a testament to the Marshall legacy of great guitar
products.
I wish you every success with your new Marshall. Welcome to the
family…
Yours Sincerely,
Photo: Dr Jim Marshall OBE and daughter Victoria (Managing
Director)
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Overview
I. Channels, Modes & MemoryPresenting the 4-channel, 100
Watt, all-valveJVM amplifier (JVM410H head or JVM410C2x12" combo).
Its 4 channels boast 3 modes,giving you a total of 12 different
modes tochoose from - each with its own unique gainstructure. Even
though its front panel contains atotal of 28 control knobs and 8
LED switches,the JVM is simple to understand and operatethanks to
its extremely logical front and rearpanel layouts.
The front panel contains dedicated sets ofcontrols for each of
its 4 channels - CLEAN,CRUNCH, OD1 & OD2 - plus MASTER
andREVERB sections. Each channel contains thefamiliar controls,
Volume, Bass, Middle, Trebleand Gain. The REVERB section consists
of 4Reverb level controls, one for each channelwhile the MASTER
section is comprised of 2footswitchable Master Volumes, plus
masterRESONANCE and PRESENCE controls thatwork universally on all 4
channels.
Each of the 4 channels has 3 switchable modes.These are selected
by the MODE switchdedicated to each channel. To select a
channelpress its respective MODE switch (or step onthe relevant
button on the supplied 6-wayfootswitch - see section II.
Footswitch). Toscroll through the selected channel's 3 modeskeep
pressing the said button and the colour ofthe LED in the switch
will change from green toorange to red and then back to green.
Doing thissteps-up the gain level each time (red being thehighest
and green the lowest for each channel)and changes the channel's
tonal voicing to suit.
When you leave and then reselect a channel, itwill automatically
recall the last active mode asall 4 channels remember the last mode
theywere in until a change is made. For instance, ifyou select the
Crunch channel’s orange modeand then go to the Clean channel, when
youreselect the Crunch channel it will still beorange.
In addition to channel and Mode selection, otherfeatures
switchable via the front panel and thesupplied 6-way footswitch are
Reverb (on/off)Master Volume selection (1 or 2), andSeries/Parallel
effects loop (on/off). All 3 ofthese options are also remembered by
eachMode.
To sum up, each of the JVM’s 12 Modes willremember it’s most
recent Reverb, FX loop andMaster Volume selection. Additionally
mode
setups can also be saved and recalled to one of128 locations via
MIDI.
II. Footswitch (UK patent pending)The JVM410H or JVM410C come
supplied witha 6-way programmable footswitch which can beconnected
to the amp via any standard guitarcable.
*Please note that the supplied Footswitch lead isunscreened and
not suitable for guitar.
The 6-button footswitch features 7 LEDSmarked CLEAN, CRUNCH,
OD1, OD2,MASTER, REVERB & FX. The LEDs for each ofthe 4
channels are 3-coloured Green, Orangeand Red, visually telling you
which channel andmode is selected alongside the status of
Master,Reverb and FX loop.
The footswitch enables you to assign any of its6 switches to
instantly recall any front panelfunction (Switch Store Mode) or
completechannel setup (Preset Store Mode) in any orderand
combination.
For example, you could program it so that:
Switch Store ModeAny footswitch is assigned to act as any one
ofyour amp’s front panel switches:Channel/Mode; Reverb on/off;
Master Volume1/2 and FX Loop on/off.
If a switch is assigned to select a particularchannel once is
has been activated, it can beused to scroll through the three
modes, just likeits respective front panel switch.
Or…
Preset Store ModeEach switch can be programmed to instantly
callup a combination of JVM button options to forma Preset. For
example, you could program it sothat:
Footswitch #1 = Crunch channel, green modewith Master Volume
‘1’, Reverb ‘on’ and FX loop‘off’.
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Footswitch #2 = Clean channel, red mode withMaster Volume ‘2’,
Reverb ‘off’ and FX loop on.
All the settings are stored within your footswitch;this means it
can be plugged into any JVM4-Channel amplifier and all your
footswitchsettings can be instantly recalled.
Details on how to program your footswitch canbe found later in
this manual.
III. Power AmpThe power amp stage of the 100 Watt JVM isbased on
the same as the one found in theJCM800 2203 and 1959 Superlead
amplifiers,responsible for the legendary Marshall roar ithas been
adjusted to suit the variety of tonesfound in the JVM. This section
featuresPresence and Resonance control to help shapethe overall
tone of your JVM amplifier.
Your JVM is also equipped with a SilentRecording mode. When the
STANDBY switch isOFF the power amplifier section is disabled butthe
rest of the amplifier remains fullyoperational.
IV. Studio Quality ReverbThe Marshall JVM410H and JVM410C
areequipped with a studio quality digital reverbrouted in parallel
to the main signal and mixedby means of a valve. When the reverb
isengaged no degradation of the direct signaloccurs and when off it
is effectively removedfrom the circuit. Each of the JVM’s 4
channelsalso has its own dedicated Reverb level control.
The Reverb switching has been designed toavoid abrupt cut offs
in the reverb tail so whenchanging from channel to channel or
switchingthe reverb off, its tail naturally decays.
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Channel Overview
The JVM’s front panel is divided into 2 mainsections: Channels
and Master. Each of its 4channels has 3 modes which are
distinguishedby a different coloured light (green, orange orred)
appearing in the respective MODE switch;the preamplifier’s gain
structure is uniquelyreconfigured for each and every mode.
1. CLEAN CHANNELCLEAN GREEN MODE: This is the cleanest ofthe
three modes and, in keeping with traditionalclean amps it uses a
simple and straightforwardcircuit, keeping the signal as pure as
possible.In this Mode the channel’s Volume control istaken out of
circuit as is the case in vintageamplifiers of this nature. This is
the only JVMmode where this happens.
CLEAN ORANGE MODE: By adding anothergain stage after the tone
stack we get apunchier sound that’s easy to overdrive. As inthe
rest of the modes the channel's Volumecontrol is now active.
CLEAN RED MODE: This mode pushes theoriginal clean sound even
more and transformsitself into a pseudo high gain channel with
theaddition of yet another gain stage after the tonestack.
In keeping with the classic clean amps ofyesteryear, all three
modes of this channelfeature what is known as a pre-gain tone
stack(i.e. the tone network lies before the channel'smain gain
stage). The reverse (i.e. the tonenetwork being after the main gain
stage) istypical of most Marshalls and, as a result, theClean
channel's tone controls work in a slightlydifferent way than you
might expect. In additionto controlling the tone of the channel
they alsoaffect how it reacts in terms of gain, allowingyou to
shape how the signal distorts.
For example, turning up the Middle control onhigher Gain
settings will focus the distortionthere, making your sound ‘sing’
in a traditionalblues/rock way. Also, because of the channels’‘tone
then gain’ topology, when a lot of gain isdialled in (especially in
the case of the REDmode), it may appear that its tone controls
aren'tdoing as much as you’d expect or sound overdistorted. This is
because the signal is beingdistorted after the tone stage,
minimising theeffectiveness of the Bass, Middle and
Treblecontrols.
2. CRUNCH CHANNELAt this point the JVM reverts to the more
typicalMarshall preamp circuit characteristic of ‘gainthen tone’.
This is also true of the OD1 and OD2channels.
CRUNCH GREEN MODE: This mode sharesthe preamp topology of the
classic MarshallJTM45/1959 ‘Plexi’ models (i.e.: gain + gain +tone)
but with a bit more of gain than is found inthe originals.
CRUNCH ORANGE MODE: This mode isreminiscent of the Marshall
JCM800 2203amplifier, a staple of hard rock. The gainstructure is
gain + gain + gain + tone.
CRUNCH RED MODE: this shares the topologyof the Orange mode but
with more gain, givingyou sounds similar to a hot-rodded
JCM800.
3. OD1 CHANNELOD1 GREEN MODE: This is very similar to
thehot-rodded JCM800 sound found in ‘CrunchRed’, allowing you to
dial-in two distinctlydifferent yet similar crunch sounds if you so
wish- one in each channel.
OD1 ORANGE MODE: This adds another gainstage to the ‘OD1 Green’
circuit, resulting in asound that’s perfect for singing leads and
hardrock/heavy metal tones.
OD1 RED MODE: Adds more gain to the ‘OD1Orange’ for a high gain
Marshall sound.
4. OD2 CHANNELThis channel is similar to the OD1 channel butwith
even more gain and a slightly different tonenetwork with the Middle
control shifted down tobeing centred around 500 Hz instead of
themore typical Marshall value of 650 Hz. Theresult is 3 high gain
modes that are ideal forboth lead and modern rhythm metal
tones.
The Basics
We recommend that you fold out the inside backcover of this
manual so that diagrams of theamp’s front and rear panels are
visible while youread.
MAINS INPUT & FUSE (16)Your amp is provided with a
detachable mains(power) lead, which is connected here. Thespecific
mains input voltage rating that youramplifier has been built for is
indicated on theback panel.
WARNING: Before going any further, makesure your amplifier is
compatible with yourelectrical supply. If you have any doubt,please
get help from a qualified technician -your Marshall dealer can help
you in thisrespect.
The correct value of mains fuse is specified onthe rear panel of
the amplifier. NEVER attemptto bypass the fuse or fit one of the
incorrectvalue.
Mains (POWER) Switch (17)This is the On/Off switch for the mains
electricpower to the amplifier.
Note: Please ensure the amplifier is switched offand unplugged
from the mains electricity supplywhenever it is moved!
INPUT Jack Socket (18)You must always use a screened
(shielded)guitar cable and never use an unscreened(unshielded)
speaker cable. Also, this cableshould be one of good quality. If
you are in anydoubt regarding this, your Marshall dealer will
bemore than happy to help and advise you.
Getting Started & Powering Up1. Make sure that the
speakers/cabinet(s) areconnected to the correct
impedanceLOUDSPEAKER jack(s) on the rear panel (1).See page 8 for
specifics regarding impedancematching. If you’re using an extension
cabinetmake sure it’s powerful enough to handle a 100Watt amp and
also that you’re using a properspeaker cable. Never use a screened
(shielded)guitar cable for this purpose
WARNING!1. Failure to do any of the above will damageyour amp.2.
NEVER use your amp without a (speaker)load attached when the
Standby Switch isON.
Marshall recommends you always leave a(speaker) load attached to
the unit.
2. Ensure that both MASTER VOLUMES on thefront panel (6) are set
to zero.
3. Connect the Footswitch Cable to theFootswitch and then
connect to the FOOTSWITCHSocket on the rear panel of amplifier.
4. Connect the supplied mains (power) lead intothe MAINS INPUT
on the rear panel first andthen into an electrical outlet.
5. Plug your guitar into the INPUT jack socketon the front
panel.
6. Turn the front panel POWER switch on. Thiswill glow red then
wait for a couple of minutes.
7. After waiting a couple of minutes, engage theSTANDBY switch.
Leaving the amp on ‘Standby’for a period allows the valves to come
up totheir correct operating temperature. In order toprolong valve
life, the STANDBY switch shouldalso be used to turn the amplifier
on and offduring breaks in a performance.
STANDBY Switch & Silent recording (19)As stated above the
STANDBY Switch is used inconjunction with the POWER Switch to
‘warmup’ the amplifier before use and to prolong thelife of the
output valves.
When the amplifier is in standby mode thewhole preamplifier
section continues running atits nominal voltages whilst the power
amplifierremains in a standby status. This allows theamplifier to
be used for silent recording orpreamplification purposes.
Only when the STANDBY is off can the amplifierbe used without a
load. Always ensure a load isconnected when leaving the silent
recordingmode, i.e. when switching the STANDBY switchON.
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Channel SectionPressing a channel button has two functions:
When coming from a different channel it recallsthe last setting
in the new selected channel.
When pressing in the same channel it cycles themodes: GREEN >
ORANGE > RED > GREEN...
Each mode remembers the FX, Reverb andMaster settings.
Example: You are in OD1 ORANGE with FX +REVERB and you press
CLEAN. The ampswitches to the last Clean mode you had (let'sassume
it was CLEAN GREEN with REVERB).If you press the OD1 switch you go
back to OD1ORANGE with FX + REVERB. This allowsbouncing between
channels without losing thesettings. If you now press OD1 again,
you go toOD1 RED with whatever FX, MASTER andREVERB settings you
had last time you were inthis mode.
Pressing REVERB switches the reverb ON andOFF in the current
channel.
Pressing FX LOOP switches the parallel FX loopON and OFF in the
current channel.
Master Section5. REVERB ControlAlongside the REVERB switch each
channelhas its own reverb control allowing individuallevel settings
of the effect.
6. MASTER 1 / MASTER 2These are the master volume controls of
theamplifier. They can be assigned individually toeach of the modes
as you wish and their settingwill be remembered in each of the
modes.
7. PRESENCE, RESONANCEThese controls are power amplifier
controls andonly have effect when playing through a speaker(not in
silent recording). They affect how thepower amplifier reacts to the
connectedspeakers and how much control the amplifierhas over
them.
Increasing the RESONANCE controlemphasises the natural speakers
resonance foran improved bass response. In the same way,increasing
the PRESENCE control emphasisesthe speaker’s high frequencies which
will beheard as an improved high frequency responsewhich adds
presence to the sound.
Presence and Resonance constitute a powerfulpower amplifier
equaliser, allowing responsesfrom a ‘^’ shape when they are fully
off, which isfelt as a mid boost, to a ‘v’ shape when they
areturned clockwise, which is felt as a scoopedsound. Again, the
effectiveness of these controlsis highly dependant on the kind of
connectedspeakers. Care has to be taken to avoid overexcursion of
the speaker cones in highresonance settings.
8. FX LOOPThis is a programmable FX loop which featuresa MIX
control on the rear panel and it is locatedafter the pre-amp, right
before the reverb andserial loop circuits. Pressing the FX
Switchengages this effects loop. Please refer to theSerial /
Parallel Loop description later on in thehandbook for its
operation.
9. FOOTSWITCH / MIDI PROGRAMThis switch has a dual function:
Pressing it once we enter the FOOTSWITCHPROGRAM mode. It is
indicated by acontinuous red light.
Pressing it twice we enter the MIDI PROGRAMmode. It is indicated
by a blinking red light.
Footswitch program and useThe JVM range features a new type of
fullyconfigurable footswitch. Connection to theamplifier requires a
standard mono 1/4" jack tojack cable. Any guitar lead will work
andpractically there should be no limit in its length.
When the front panel FOOTSWITCH / MIDIPROGRAM switch is off, the
footswitch operatesin safe mode and executes the commands themoment
the switch is pressed down.
If you enter the FOOTSWTICH PROGRAMmode (LED red) you will be
able to program thefootswitch but nevertheless the footswitch
andthe amplifier will remain fully operational with theonly
difference that the commands will beexecuted when releasing the
footswitches, asopposed to the normal mode.
Each of the individual footswitches has 2 modesof operation:
preset store and switch store.
In preset store mode, any of the footswitchescan be configured
to store the current amplifierstatus. The current channel, master,
FX andreverb status will be stored and recalled whenthe respective
footswitch is pressed.
To store the current status simply:
Set the amplifier to FOOTSWITCH PROGRAMmode (red light ON).
Press and hold the desired switch for about 3seconds.
The FX footswitch LED will flicker a couple oftimes indicating
that the preset has been stored.
In switch store mode, any of the footswitchescan be configured
to replicate the front panelswitches and the amplifier will react
exactly inthe same way as when you operate them on thefront
panel.
All the front panel switches can be mapped toany of the
footswitches without any limitation.The only exception is the
FOOTSWITCH / MIDIPROGRAM key which cannot be assigned tothe
footswitch.
To assign any of the front panel keys (exceptFOOTSWITCH / MIDI
PROGRAM) to any of thefootswitches simply:
Set the amplifier to FOOTSWITCH PROGRAMmode (red light ON).
Press and hold the desired footswitch.
While holding the footswitch down, in less than3 seconds, press
the front panel switch youwant to map.
The FX footswitch LED will flicker a couple oftimes indicating
that the switch has beenmapped.
From now on the selected footswitch will actexactly in the same
way as if you press therelated front panel switch.
Keys and presets can be assigned as wishedwithout limitation and
in any order (again, exceptthe FOOTSWITCH / MIDI PROGRAM key).
Thefootswitch configuration is stored in thefootswitch itself, not
in the amplifier. Resettingthe amplifier will not affect the
footswitchconfiguration as well.
The footswitch can be hot-swapped andsynchronises itself with
the amplifier afterconnection. However it is recommended toconnect
the footswitch lead to the footswitchside first and then connect it
to the amplifier.
MIDI operationPressing the FOOTSWITCH / MIDI PROGRAMswitch twice
puts the amplifier in MIDI waitingmode, the LED will flash until a
valid MIDIprogram change command is received.
On reception of a MIDI program changecommand the amplifier
stores the current status(Channel + FX + Reverb + Master Settings)
inthe MIDI program number received. It ispossible to store up to
128 different MIDIpresets.
To exit this status without waiting for incomingMIDI data press
the FOOTSWITCH / MIDIPROGRAM switch again.
Note about MIDI channels: By default theamplifier is configured
to listen to MIDI channel#1 but it can be changed to listen to any
of the16 MIDI channels as follows:
Switch the amplifier off (Power switch, notStandby).
Press and hold the FOOTSWITCH / MIDIPROGRAM switch.
Switch the amplifier on (Power switch).
Release the FOOTSWITCH / MIDI PROGRAMswitch, the LED will start
to flash.
Send ANY MIDI command using your MIDIpedalboard or any other
MIDI equipment.
The amplifier will detect which channel came inand configure
itself to listen to that MIDI channelonly. From now on any MIDI
preset you hadpreviously stored will be activated only on thenew
channel regardless of what channel youused before, this allows a
fast reconfigurationshould there be a MIDI conflict with any
otheroutboard equipment.
If you want to exit the MIDI channel selectionwithout any action
press theFOOTSWITCH / MIDI PROGRAM switch whilewaiting for MIDI
data.
Front Panel Operation
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Rear Panel Operation
10. SERIAL / PARALLEL FX LOOPThe JVM is equipped with a series /
parallel FXloop. Connect your external FX gear input to theJVM SEND
jack, and the FX output to the JVMRETURN jack. As described
previously, thiseffects loop can be bypassed from the frontpanel
and the amount of effect can be dialed inwith the MIX control.
The +4dBu/-10dBV switch allows you toconfigure the loop for its
use with eitherprofessional equipment (+4dBu setting) or withguitar
level effects like effects pedals (-10dBVsetting).
When MIX is set to WET all the signal goesthrough the external
loop, adding more direct(unprocessed) signal as you turn it
towardsDRY. This allows you to mix any amount of theexternal effect
without loosing or degrading thedirect signal quality.
When mixing the WET and DRY signals theexternal effects
processor’s output should beconfigured to remove the direct
(unprocessed)signal or unpleasant phasing effects may occurwhen
mixing it again in the amplifier. If theamplifier sounds thin after
connecting anexternal effect check that no direct signal isbeing
returned from the processors output.
Note that if the FX loop is ON and the MIXcontrol is set to WET
without an externalprocessor connected, the amplifier will
bemuted.
11. POWER AMP INSERT / SERIAL LOOPThis is a passive loop
connected right before themaster controls. It is a line level loop
so it isrecommended to only use high headroomdevices to avoid
signal degradation. Pluggingonly into the return jack allows the
use of theJVM’s power section overriding the preamp.
Master controls and the emulated line out arelocated after the
serial loop so it is still possibleto take advantage of those
features when usingan external preamplifier. The loop can be
takenoff the circuit by pressing the BYPASS switch,but as opposed
to the Series / Parallel loop thisswitch cannot be programmed.
12. EMULATED LINE OUTThe pre master volume signal,
processedthrough a 4x12 speaker cabinet emulator andelectronically
balanced is made available at thisconnector.
13. FOOTSWITCHConnect the supplied footswitch using anystandard
1/4" jack mono lead. Using any othertype of footswitch rather than
the supplied willhave no effect and will be ignored by
theamplifier.
14. MIDI In / ThroughConnect any external MIDI gear to the MIDI
InDIN socket. A copy of the signal in thisconnector will be
available on the MIDI thrusocket to allow daisy chaining of
MIDIequipment. Note that the JVM only acceptsincoming data and it
is not able to send anyMIDI commands.
15. SPEAKER OutputsThere are 5 speaker outputs available on
therear panel. They are labelled according to theintended
impedances:
16Ω: connect any 16 ohms guitar cabinet to thisjack.
8Ω: connect a single 8 ohms guitar cabinet ortwo 16 ohms guitar
cabinets.
4Ω: connect a single 4 ohms guitar cabinet ortwo 8 ohms guitar
cabinets.
WARNING, although the JVM amplifier has 5speaker outputs never
attempt to connect morespeakers than rated. The safe combinations
are1x16 Ohm, 1x8 Ohm, 1x4 Ohm, 2x16 Ohm or2x8 Ohm. Any other
speaker configuration maystress the power amplifier section and
inextreme cases may lead to valve and/or outputtransformer
failure.
HINTS & TIPSFactory ResetThis will erase all the MIDI
presets and set MIDIreception channel to #1. Please note that
oncethe memory is erased it cannot be recovered.
Switch the amplifier off (power switch off, notstandby
switch).
Press and hold CLEAN CHANNEL / GAINswitch.
Switch the amplifier on (power switch on, notstandby
switch).
The 4 channel LEDs will glow red.
Release the switch.
To confirm the factory reset press CRUNCHMODE switch.
If you want to abort, press any other key.
Footswitch Reset:It is possible to reset the footswitch to
thefactory default status. This is achieved asfollows:
Unplug the footswitch at any of the cable sides.
Press and hold the switch #6 (right switch).
Plug in the footswitch cord.
Release the switch and the FX led will startblinking.
If you want to erase the footswitch memorypress the switch #5.
To keep the memory pressany of the #1 to #4 switches. Please note
thatonce the memory is erased it cannot berecovered.
Release the switch and the footswitch willsynchronise with the
amplifier.
The factory default is as follows:FSW #1: Clean ModeFSW #2:
Crunch ModeFSW #3: OD1 ModeFSW #4: OD2 ModeFSW #5: MasterFSW #6:
Reverb
HintsHint 1: It is possible to use different modes inthe same
channel with different volumes toavoid imbalance which can be
especiallyinteresting in the Clean channel. To do thissimply create
2 presets in the footswitchassigning MASTER 1 or MASTER 2 to any
ofthe modes.
If you do not connect any effect to theSERIAL / PARALLEL FX LOOP
the MIX controlcan be used to act like an extra volume controlin
any of the channels.
Hint 2: To have a tuner output muting theamplifier, connect the
tuner to the FX send andselect the Clean channel. Turn the MIX
controlto WET and switch the FX loop on. Store thispreset as
described before and label it forexample as ‘tuner’. Obviously in
thisconfiguration it is not possible to connect anyother effect to
the loop.
Hint 3: To use a different preamplifier andcombine it with the
JVM channels, connect theexternal preamplifier output to the
parallel loopreturn and turn the MIX to WET. Connect theexternal
preamp input with a splitter to theamplifiers input (it might be
necessary to use anactive splitter to keep a high impedance
and/oran isolated one to avoid ground loops).Switching the effects
loop ON and OFF willalternate between the external preamp and
theJVM preamp.
As the JVM reverb circuitry is connected afterthe parallel loop
it is also possible to create apreset to add reverb to the external
preamp. Todo this, simply switch the reverb ON and createa preset
in any channel with the reverb ON andFX ON and assign it to the
footswitch. Thatwould be external preamp + reverb.
You can also go further and assign a differentMaster level to
both external and internalpreamplifiers in the same way as you
assignedreverb.
Hint 4: Notes about using 2 headssimultaneously. The suggested
procedure isconnect the ‘master’ head PREAMP OUT to the‘slave’ head
POWER AMP IN and switch thePOWER AMP INSERT to ACTIVE in the
‘slave’amplifier.
In order to track the master volume settings inboth heads (as
the master volume circuitry iswired after the loop) it is suggested
to use MIDIcontrol with both amplifiers programmed in thesame way.
Connect the MIDI IN of one of theamplifiers to the MIDI THROUGH of
the otherand the pedalboard or MIDI equipment to theremaining MIDI
IN.
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Unas palabras de Jim Marshall
Me gustaría agradecerte personalmente el que hayascomprado uno
de nuestros nuevos amplificadores “JVM”.
Desde que fundara la empresa Marshall en 1962 hesido testigo de
los avances más increíbles y rompedoresen la tecnología del diseño
de los amplificadores, talescomo los amplificadores volumen master,
laconmutación de canales, la reverb, los lazos de efectos,la
tecnología MIDI, la simulación de altavoz y losprocesadores de
efectos digitales, por nombrar unoscuantos. Estas características
tan comunes hoy en día,no lo fueron tanto hace unos años. Sin
embargo, losmismos valores que estuvieran presentes en los
primerosamplificadores Marshall están todavía hoy en
nuestrosamplis: un riguroso proceso de construcción, un
acabadovistoso y estilista y, sobre todo, el gran Sonido
Marshall.
Como músico que soy, entiendo perfectamente la necesidad
deconseguir ese sonido que te inspire y te ayude en el
procesocreativo - ya seas principiante, iniciado o profesional -
Con esto enmente, encargué a mi equipo de I+D la tarea de diseñar
una nueva familiade amplificadores que captara totalmente la
esencia del Sonido Marshall, a la vez quedispusieran de los últimos
avances tecnológicos.
El resultado es la Serie JVM - nuestra última serie de
amplificadores de válvulas quecombina todos los valores que hemos
mencionado antes más unos cuantos atributos másy, por supuesto,
toda la magia del Sonido Marshall. Estoy orgulloso de poder decir
que lanueva Serie JVM es verdaderamente un testamento al legado de
los buenos productos deguitarra de Marshall.
Te deseo grandes éxitos con tu nuevo Marshall. Bienvenido a la
familia…
Sinceramente,
1110
Fotografía: Dr. Jim Marshall OBE y su hija Victoria (Directora
General)
ESPA
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JVM410H Head JVM410C ComboPower (RMS) 100W 100WValves 5x ECC83 +
4x EL34 5x ECC83 + 4x EL34Main Guitar - Input Impedance 470kΩ
470kΩEmulated Output - Level +4dBu +4dBuFX Send Level - selectable
-10dBV, +4dBu -10dBV, +4dBuWeight 22kg 34.5kgSize (mm) W, H, D 750
x 310 x 215 690 x 510 x 265
Technical Specification
* EUROPE ONLY - Note: This equipment has been tested and found
to comply with therequirements of the EMC Directive (Environments
E1, E2 and E3 EN 55103-1/2) and the Low VoltageDirective in the
E.U.
* EUROPE ONLY - Note: The Peak Inrush current for the JVM410H
and JVM410C is 52 amps.
Note: 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
protection againstharmful interference in a residential
installation. This equipment generates, uses and can radiate
radiofrequency energy and, if not installed and used in accordance
with the instructions, may cause harmfulinterference to radio
communications. However, there is no guarantee that interference
will not occur in aparticular installation. If this equipment does
cause harmful interference to radio or television reception,which
can be determined by turning the equipment off and on, the user is
encouraged to try to correct theinterference by one or more of the
following measures: u Reorient or relocate the receiving antenna. u
Increase the separation between the equipment and the receiver. u
Connect the equipment into an outlet on a circuit different from
that to which the receiver is connected. u Consult the dealer or an
experienced radio/TV technician for help.
EN
GLIS
H
Follow all instructions and heed all warnings KEEP THESE
INSTRUCTIONS !
-
GAIN0 10
GAIN
INPUT
POWER STANDBY/ SILENT RECORDING
0 10
REVERBMASTER
OD1MODE
CLEANMODE
CRUNCHMODE
OD2MODE
FOOTSWITCH/MIDI PROGRAM
FX LOOP
TREBLE0 10
TREBLE0 10
MIDDLE0 10
MIDDLE0 10
BASS0 10
BASS0 10
VOLUME(Orange & Red)
0 10
VOLUME0 10
GAIN0 10
GAIN0 10
TREBLE0 10
TREBLE0 10
MIDDLE0 10
MIDDLE0 10
BASS0 10
BASS0 10
VOLUME0 10
VOLUME0 10
RVBCLEAN
0 10
RVB CRUNCH0 10
RVBOD1
0 10
RVB OD20 10
MASTER1
0 10
PRESENCE0 10
MASTER2
0 10
RESONANCE0 10
MASTER REVERB OD1
OD2
CLEAN
CRUNCH
O
I
OFF
ON
410H
100W Valve Amplifier
JVM410H Front panel
JVM410H Rear panel
69
81917 7 4 2 18
5 3 1
15 10 11 12 13 14 16
GAIN0 10
VOLUME
INPUT
POWERSTANDBY/ SILENT RECORDING
0 10
REVERB MASTER
OD2MODE
CLEANMODE
CRUNCHMODE
OD1MODE
FX LOOP
FOOTSWITCH/MIDI PROGRAM
BASS0 10
BASS0 10
MIDDLE0 10
MIDDLE0 10
TREBLE0 10
TREBLE0 10
VOLUME(Orange & Red)
0 10
GAIN0 10
VOLUME0 10
VOLUME0 10
BASS0 10
BASS0 10
MIDDLE0 10
MIDDLE0 10
TREBLE0 10
TREBLE0 10
GAIN0 10
GAIN0 10
RVBOD2
0 10
RVB OD10 10
RVBCRUNCH
0 10
RVB CLEAN0 10
RESONANCE0 10
MASTER 20 10
PRESENCE0 10
MASTER 10 10
MASTERREVERBOD2
OD1CLEAN
CRUNCH
O
I
OFF
ON
410C
100W Valve Amplifier
JVM410C Front panel
JVM410C Rear panel
5 8
9 19 176118 3
72 4
131416 15101112
