7
4. Starting up
4.1 Cabling and switching on
Before connecting to mains, please ensure that your
local mains voltage is
suitable for the volta-
ge of the device (e.g.
120V in the USA, 230V
in Europe). The relevant
specs and safety sym-
bols are printed on the rear side of the unit.
Connect all cables according to your application
and switch the amplifier on. The green power con-
trol LED indicates operational readiness.
4.2 Level adjustment
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.
5. Functional characteristics
5.1 Equalization
The triple-/dual-band equalizer of your
Compact
60
3
provides you with an active and high quality
sound interaction tool that supports the natural
tone of instruments and voice whilst simultaneous-
ly offering you the possibility of a controlled accen-
tuation.
With all controls in mid position the filters are set
to produce a very pleasing and natural sound im-
pression that you can „colour up“ by using the
co-
lour
filter with the effect of lowering the mids and
lifting the trebles. The tone becomes more open
and light and is especially suited for fingerpicking
techniques.
The equalization can support or soften the effect of
the
colour
filter and allows a differentiated mids-
accentuation.
A: with colour-filter
(switch pressed)
reduce
treble
to soften possible sharpness
B: without colour-filter
(switch not pressed)
boost
treble
to brighten the sound
Note:
The active equalization of the
Compact
60
3
effects
the signal adjustment. If you spot an intensified fli-
ckering of the clip indicator, level the signal level
with the
gain
control
(s. 4.2 Level adjustment)
.
colour
bass
middle
treble
colour
bass
middle
treble
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
IF_Compact60
3
_20120529
Compact
60
3
channel 2
IF_Compact60
3
_20120529
Compact
60
3
