REAR PANEL FUNCTIONS
2827
26
313029 32 33
26. MAINS INPUT
Connects the amplier 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 amplier rear panel.
You must switch the amplier o and
disconnect it from the mains electricity
supply before aempng to access the
fuse compartment. If in doubt, contact
your Marshall dealer.
27. MIDI IN
Connect your external MIDI device to the
MIDI IN socket.
Note: The amplier only accepts incoming
data and it is not able to send any MIDI
commands.
You can set the channel, the state of
the loop and master volume via MIDI
messages.
MIDI commands allow the remote control
of some front panel funcons (refer to MIDI
implementaon chart in the user manual).
The MIDI receive channel is factory-set
to channel 1. In order to set a dierent
channel, press and hold the Loop On/O
switch (front panel funcon #23) while
powering up the amplier to acvate
MIDI waing mode. The LED will ash
unl a valid MIDI command is received.
The MIDI receive channel will be set to
the channel of that command.
To select MIDI OMNI receive, put the
amplier into MIDI waing mode and
then press and hold the Master Select
switch (front panel funcon #18) unl its
LED lights up.
Note: When the 2-way footswitch is
connected the amplier will not respond
to any MIDI messages.
28. FX LOOP RETURN
Connect the output of an external FX
pedal or processor.
29. FX LOOP SEND
Connect the input of an external FX pedal
or processor.
30. F/S
Connect the supplied 2-way footswitch
or the oponal 6-way footswitch here.
31. AUDIO IN
Connect an external device here to
pracce with or to jam along to music.
32. EMULATED OUT
Emulated line level output for
headphones or connecon to a mixer.
The DSL is equipped with a high quality
emulated output using Soube-designed
studio cabinet emulaon. This ensures
that your headphone and output signal
from this socket provide the best possible
tone for pracce or recording.
Note: Using the emulated out does not
omit the need for a speaker load to be
connected to the amplier (rear panel
funcon #33).
Note: For silent recording via emulated
out set the output switch to STB (front
panel funcon #24).
33. LOUDSPEAKERS
There are ve speaker outputs available.
They are labelled according to the
intended impedances:
• 1 x 16 Ohm: connect a single 16
Ohm speaker cabinet to this jack.
• 1x 8 Ohm or 2 x 16 Ohm: connect
a single 8 Ohm speaker cabinet or
two 16 Ohm speaker cabinets.
• 1 x 4 Ohm or 2 x 8 Ohm: connect
a single 4 Ohm speaker cabinet or
two 8 Ohm speaker cabinets.
WARNING: Although the amplier has
ve speaker outputs, never aempt to
connect more speaker cabinets than
rated. The safe combinaons are: 1 x 16
Ohm, 1 x 8 Ohm, 2 x 16 Ohm, 1 x 4 Ohm
or 2 x 8 Ohm only. Any other speaker
cabinet conguraon may stress the
power amplier secon and in extreme
cases may lead to valve and/or output
transformer failure. Never use DSL100HR
or DSL40CR without a speaker load.
14DSL40CR service manual
BOOK-80015-01 | M3390.069