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5
heavy’ tone, turn the mid control down and
boost the treble and bass. For a more classic
‘rock’ tone bring back the mids and bring the
treble and bass down a bit.
✪ User Hint - When using the less gain / more
volume approach, the tone controls can be used
to help ‘push’ the power amp for a more refined
tone.
8. Master FX Mix
This controls the balance of the return from the
parallel FX loop (see rear panel details for
connection) with the amps direct signal.
✪ User Hint - As the FX loop is of the parallel
kind, this is where you should use time delay
effects (i.e. echo, reverb, pitch shifting, chorus,
etc.). For optimum use the direct signal in your
processor should be turned to zero so that only
the effect signal is returned to the amp, this way
the tone integrity of the direct amp signal is
unimpaired.
9. Master Reverb
This controls the level of the internal spring
reverb circuitry from a slight shimmer to a
cavernous depth. DSL401 only - the reverb has
the facility of being footswitchable via the rear
panel socket and optional PEDL-10013
footswitch.
10. Master Volume
Apart from the obvious function of being the
master level control for the whole amp
(regulating the output volume of both the clean
and the overdrive channels), this control actually
affects the apparent power level of the power
amp section itself. This means that, at lower
settings, the amp acts and feels like an even
lower powered amp, along with the kind of
smooth saturation that you get from pushing a
power amp into distortion.
✪ User Hint - As the (rear panel mounted)
speaker emulated D.I. output is derived from this
circuit you can balance the sound coming out of
the loudspeaker from zero to full, whilst
maintaining a constant level out of the D.I.
output and enjoy the tonal qualities of a push-
pull valve output stage - ideal for silent
recording, direct to the desk.
11. Standby Switch
This turns the high voltage feed to operate the
valves on and off.
✪ User Hint - This switch should be used for
(a) allowing the amp to warm up before turning
the Standby on (at least a minute - preferably 2/3
minutes if possible) and (b) turn the Standby
switch off when taking a break (rather than
turning off the whole amp), thereby keeping
your amp at the ‘ready’, without waiting for it to
warm up again. Remember to do these two
simple rules and your valves will love you for it
and should last an awful lot longer before
replacement is needed.
12. Power Switch
This turns the mains electricity that feeds your
amp on and off. As stated before, turn this
switch on for at least a minute or two before
turning the Standby on, to allow your amp to
warm up.
✪ User Hint - For environmental reasons at
least, if leaving your amp for more than a normal
gig type break or so, turn your amp off at this
switch, it will save electricity. Also, if leaving
your amp unused for a long time, always
remember to disconnect your amp’s power cord
from the mains supply, at the very least it will
prevent someone else accidentily turning it on
without realising.
1. Channel Footswitch Jack
This socket takes the jack connected to the lead
of the channel change footswitch
(CLEAN/OVERDRIVE - DSL201, CLN/OD &
OD1/OD2 - DSL401).
2. Reverb Footswitch -(DSL401 only)
Takes the optional footswitch (PEDL-10013) to
remotely control the reverb function.
3. FX Loop Send Jack
Connects the DSL amp to the input of the
external FX processor.
4. FX Loop Return Jack
Connects the output of the external FX processor
back into the DSL amp circuit.
5. Speaker Emulated D.I. Out Jack
Line level, emulated output signal for
connection into PA or recording Mixing Desks
etc.
DSL201 & DSL401 Rear Panel Features (pages 32 & 34)
