Starting Up; Cabling And Switching-On; Level Adjustment - AER MM 200 User Manual

4. Starting up

4.1 Cabling and switching on
Before connecting to mains, please ensure that your
local mains voltage is suitable for the voltage of the

4.2 Level adjustment

Note: Level adjustment
By setting the level correctly we mean the signal le-
vel in one or several devices in a signal chain is nei-
ther too high nor too low. This applies equally to all
circuits in a complete circuit design (EQs, preamps
etc.)
Consequently, care must be taken that no part of the
circuit is overloaded or that distortion is unintentio-
nally added to the signal.
We have carefully designed the circuit to achieve this
objective whilst also providing controls for „manual"
intervention.
channel 1
device (e.g. 120V in
the USA, 230V in Euro-
pe). The relevant specs
and safety symbols are
printed on the rear side
of the unit.
channel 2
Master-, gain- and level-control should be zero-
ed (over to far left), all other control should be in
center position, the switches should be off = not
pressed.
Connect all cables according to your application
and switch the amplifier on. The green power con-
trol LED indicates operational readiness.
First ensure, that the master level control is zeroed
(over to far left), so that when you are setting the
sound level, the signal passes through the elect-
ronics only and does not reach the loudspeaker.
By pressing the high-/low- (attn.) resp. line-/mic-
switches you can adapt the amplifier to your signal
sources (guitar pickups, microphone etc).
Turn the gain control clockwise until the red clip
indicator flashes momentarily when playing with a
strong attack. Thus you make sure that your signal
source (e.g. instrument) provides the input-stage of
the amplifier with the necessary input.
The clip-LED indicates an overload. A short flicker
is of no danger to AER devices. During operation a
short flicker can be accepted, to be on the safe side
you should reduce the gain slightly to achieve an
optimal and distortion-free performance.
Finally set the desired overall volume level with the
master level control.
7