Marshall Amplification DSL20CR User manual

DSL20CR &
DSL20HR
OWNER’S MANUAL

Congratulations on your purchase of this Dual Super Lead (DSL) amplier from
Marshall Amplication.
The DSL provides the legendary Marshall tone, allowing you to express your distinct
playing style and attitude.
From clean to distorted overdrives, the DSL 20 is a versatile all valve amp that allows
you to easily dial in the sound you desire.
This DSL amplier not only delivers the tone you expect from a Super Lead amplier
it is also packed with an array of features such as an effects loop, power reduction
and studio quality digital reverb. Right out of the box your DSL provides you with
the functionality you need to take your sound from rehearsal to the studio with
condence.
Your DSL amplier has been designed specically for those who need the full rich
tone of a valve amp in a compact and portable format. This makes the amp ideal for
a live environment, studio or at home thanks to the power reduction system.
We hope you enjoy performing, practicing and recording with your DSL amplier.
- The Marshall Team
The DSL 20 Head and DSL 20 Combo feature the same functions. The combo is
equipped with a 12” Celestion Seventy-80 speaker chosen for its ability to deliver
exceptional tone and exibility.
The DSL features two foot switchable channels: CLASSIC GAIN and ULTRA GAIN.
The CLASSIC GAIN channel can deliver sparkling clean sounds through to the more
aggressive break-up of a Marshall JCM800 amplier. The ULTRA GAIN channel
provides even more distortion and break-up for players looking for high gain tone
from their amplier.
Both channels share a passive three-band EQ, with BASS, MIDDLE and TREBLE
controls. The EQ section also features Tone Shift, which when activated recongures
the pre-amp mid frequencies making DSL ideal for contemporary metal tones,
especially when combined with higher gain settings.
The DSL 20 features professional quality digital REVERB and a series FX LOOP. The
LOW POWER function adds a further dimension to the DSL sound, giving you rich
valve tone at an ear-friendly volume.
INTRODUCTION
OVERVIEW
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ENGLISH
PLEASE READ THIS MANUAL CAREFULLY
BEFORE PLUGGING IN.
FOLLOW ALL INSTRUCTIONS AND HEED ALL WARNINGS.
KEEP THESE INSTRUCTIONS.
This device complies with part 15 of the FCC Rules. Operation is subject to the
following two conditions:
1. This device may not cause harmful interference, and
2. This device must accept any interference received, including interference
that may cause undesired operation.
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 against harmful interference in a residential
installation.
This equipment generates, uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause harmful
interference to radio communications.
However, there is no guarantee that interference will not occur in a particular
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 the interference by one or more of the
following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and the receiver.
• Connect the equipment into an outlet on a circuit different from that to
which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
CAUTION: Any changes or modications not expressly approved by the party
responsible for compliance could void the users authority to operate the equipment.
This device complies with CAN ICES-3(B)/NMB-3(B)
COMPLIANCE STATEMENT
WARNING:
Before going any further, make sure that
your amplier is compatible 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
rating 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
#16). The correct value and type of
mains fuse is specied on the rear panel
of the amplier.
NEVER attempt to bypass the fuse or t
one of the incorrect value or type.
TRANSPORTING YOUR EQUIPMENT:
Please ensure that your amplier is
switched off, unplugged from the mains
electricity supply and all removable
cables have been disconnected from
your equipment before attempting to
move it.
IMPORTANT SET UP INFORMATION:
1. When using the DSL20HR, or the
DSL20CR 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
information regarding impedance
matching (Rear Panel Function #22).
WARNING:
Failure to do the above may damage
your amplier. When connecting 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 is
set to the OFF position (Front Panel
Function #15).
3. Ensure the OUTPUT switch is in the
STANDBY position
(Front Panel Function #14).
4. Connect the supplied mains (power)
lead into the MAINS INPUT (Rear
Panel Function #16) rst and then
into an electricity outlet.
5. Ensure that the volume controls on
the front panel are set to zero (Front
Panel Functions #3 & #6).
6. Plug your guitar into the INPUT jack
socket (Front Panel Function #1).
7. Switch the amplier ON using the
POWER switch, wait for a few
minutes and then switch the
OUTPUT switch to either the LOW
or HIGH position.
8. Turn the front panel POWER switch
on and wait for a few minutes
before going to point 9.
9. Turn the selected channel volume
up to your preferred level and your
amplier is ready to play.
WARNING! IMPORTANT SAFETY INSTRUCTIONS
ENGLISH

ENGLISH
PLEASE READ THIS MANUAL CAREFULLY
BEFORE PLUGGING IN.
FOLLOW ALL INSTRUCTIONS AND HEED ALL WARNINGS.
KEEP THESE INSTRUCTIONS.
This device complies with part 15 of the FCC Rules. Operation is subject to the
following two conditions:
1. This device may not cause harmful interference, and
2. This device must accept any interference received, including interference
that may cause undesired operation.
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 against harmful interference in a residential
installation.
This equipment generates, uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause harmful
interference to radio communications.
However, there is no guarantee that interference will not occur in a particular
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 the interference by one or more of the
following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and the receiver.
• Connect the equipment into an outlet on a circuit different from that to
which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
CAUTION: Any changes or modications not expressly approved by the party
responsible for compliance could void the users authority to operate the equipment.
This device complies with CAN ICES-3(B)/NMB-3(B)
COMPLIANCE STATEMENT
WARNING:
Before going any further, make sure that
your amplier is compatible 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
rating 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
#16). The correct value and type of
mains fuse is specied on the rear panel
of the amplier.
NEVER attempt to bypass the fuse or t
one of the incorrect value or type.
TRANSPORTING YOUR EQUIPMENT:
Please ensure that your amplier is
switched off, unplugged from the mains
electricity supply and all removable
cables have been disconnected from
your equipment before attempting to
move it.
IMPORTANT SET UP INFORMATION:
1. When using the DSL20HR, or the
DSL20CR 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
information regarding impedance
matching (Rear Panel Function #22).
WARNING:
Failure to do the above may damage
your amplier. When connecting 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 is
set to the OFF position (Front Panel
Function #15).
3. Ensure the OUTPUT switch is in the
STANDBY position
(Front Panel Function #14).
4. Connect the supplied mains (power)
lead into the MAINS INPUT (Rear
Panel Function #16) rst and then
into an electricity outlet.
5. Ensure that the volume controls on
the front panel are set to zero (Front
Panel Functions #3 & #6).
6. Plug your guitar into the INPUT jack
socket (Front Panel Function #1).
7. Switch the amplier ON using the
POWER switch, wait for a few
minutes and then switch the
OUTPUT switch to either the LOW
or HIGH position.
8. Turn the front panel POWER switch
on and wait for a few minutes
before going to point 9.
9. Turn the selected channel volume
up to your preferred level and your
amplier is ready to play.
WARNING! IMPORTANT SAFETY INSTRUCTIONS
ENGLISH

FRONT PANEL FUNCTIONS
6. VOLUME
Controls the volume level of the ULTRA
GAIN channel.
EQUALISATION SECTION
7. TONE SHIFT
Recongures the preamp EQ network’s
mid frequencies adding a new dimension
to tonal shaping.
8. TREBLE
Controls higher frequencies of your
sound. Turning clockwise will increase
the highs making your sound brighter
and more crisp.
9. MIDDLE
Controls the middle register of your
sound. Turning clockwise adds girth.
Turning anticlockwise reduces the
middle frequencies ‘scooping’ the
sound – this is accentuated when used in
conjunction with Tone Shift (Front Panel
Function #7).
10. BASS
Controls the amount of lower frequency,
or bottom-end, in your sound. Turning
clockwise will increase the bottom-end
making the sound fuller.
Tonal Note: The preamp EQ network is
dynamic and highly interactive. Please note
that because of this, altering the setting of
one control can change the way that the
other controls behave – experiment to nd
your sound.
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1. INPUT
Input jack socket for your guitar cable.
Use a good quality screened/shielded
guitar cable to help prevent noise
interference.
CLASSIC GAIN CHANNEL
2. GAIN
Controls the gain level for the CLASSIC
GAIN channel. As the amount of gain
increases, so will the distortion level in
your sound.
3. VOLUME
Controls the volume level for the
CLASSIC GAIN channel.
4. CHANNEL SELECT
Press to switch between CLASSIC GAIN
and ULTRA GAIN channels.
The CLASSIC GAIN channel status LED
will light green to indicate that CLASSIC
GAIN channel is selected.
The ULTRA GAIN channel status LED
will light red to indicate the ULTRA GAIN
channel is selected.
Note: Channels can be selected using the
supplied 2-way footswitch.
ULTRA GAIN CHANNEL
5. GAIN
Controls the gain level for the ULTRA
GAIN channel. As the amount of gain
increases, so will the distortion level in
your sound.
DSL20C FRONT PANEL
DSL20H FRONT PANEL
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FRONT PANEL FUNCTIONS NOTES
11. PRESENCE
Controls the amount of higher frequency
content in your sound. Turn clockwise
to add bite for a more cutting tone.
PRESENCE is an power-stage function
and acts independently of the preamp
EQ network.
12. RESONANCE
Controls the amount of lower frequency
content in your sound. Turning this
control clockwise adds a resonant
bass boost, increasing bottom end.
RESONANCE is a power-stage function
and acts independently of the preamp
EQ network.
13. REVERB
Controls the overall REVERB level.
14. OUTPUT
This three position rocker switch
combines STB (standby) and HIGH/
LOW output power functions. The
output stage and power control for this
amplier has been designed to deliver
the optimum tonal performance at
all power levels. The HIGH and LOW
output functions allow the user to
choose between two congurations of
the internal power supply. These two
congurations give the choice between
two output power levels, but ensure that
the output valves behave in the same
way for both. This means the amplier
can be put into LOW power mode
without compromising on tone.
HIGH: This is the 20 Watt high power
setting.
STB (standby): This is used in conjunction
with the mains POWER switch (Front Panel
Function #15). When powering up, always
switch mains POWER on rst, leaving
the OUTPUT switch in the STB (standby)
position. Standby mode should also be
used to mute the amp during breaks in
performances to avoid stress to the valves
of the amplier.
LOW: This is the 10 Watt low power setting.
15. POWER
Mains power switch.
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emulation. This ensures that your
headphone and output signal from this
socket provide the best possible tone for
practice or recording.
Note: For silent recording via EMULATED
OUT set the OUTPUT switch to STB (Front
Panel Function #14).
Important: Using EMULATED OUT does
not omit the need for a speaker load to be
connected (See Rear Panel Function #22).
22. LOUDSPEAKERS
There are three speaker cabinet output
jack sockets available. They are labelled
according to the intended impedances:
• 1 x 16 OHM: Connect a single 16
Ohm speaker cabinet to this jack.
• 1 x 8 OHM or 2 x 16 OHM: Connect
a single 8 Ohm speaker cabinet or
two 16 Ohm speaker cabinets.
WARNING - Although the amplier has
three speaker outputs, never attempt
to connect more speaker cabinets than
rated. The safe combinations are: 1 x 8
Ohm speaker cabinet, 2 x16 Ohm speaker
cabinets or 1 x 16 Ohm speaker cabinet.
Any other speaker cabinet conguration
may stress the power amplier section and
in extreme cases may lead to valve and/
or output transformer failure. NEVER use
DSL20HR or DSL20CR without a speaker
load.
16. 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.
17. FX LOOP RETURN
Connect the output of an external FX
pedal or processor.
18. FX LOOP SEND
Connect the input of an external FX
pedal or processor.
19. F/S
Connect the supplied 2-way CHANNEL
and FX LOOP footswitch here (PEDL-
90012).
20. AUDIO IN
Connect an external device here for
practice or to jam along with music.
21. EMULATED OUT
Frequency compensated line level
output for headphones or for connection
to a mixer. The DSL is equipped with
a high quality emulated output using
Softube-designed studio cabinet
REAR PANEL FUNCTIONS
DSL20CR REAR PANEL
DSL20HR REAR PANEL
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