13
The dip-switch
(input 1)
and the piezo/line-switch allows
you to adapt diff erent signal sources (Piezo, magnetic PU’s,
Microphone…) on your
Compact
classic pro.
5. Starting up
5.1 Cabling and switching on
Before connecting to mains, please ensure that your local
mains voltage is suitable for the voltage of the device (e.g.
120V in the USA, 230V in Eu-
rope). The relevant specs and
safety symbols are printed
on the rear side of the unit.
Connect all cables according
to your application and
switch the amplifi er on. The green
power
control LED indica-
tes operational readiness.
5.2 Level adjustment
Note: Level adjustment
By setting the level correctly we mean the signal level in
one or several devices in a signal chain is neither 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 unintentionally added to
the signal.
We have carefully designed the circuit to achieve this
objective whilst also providing controls for „manual“
intervention.
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 electronics only and does not
reach the loudspeaker.
By pressing the
high-/low-
(attn.)
resp.
line-/mic-
switches you can adapt the amplifi er to your
signal sources (guitar pickups, microphone etc).
Turn the
gain
control clockwise until the red
clip
indicator
fl ashes momentarily when playing with a strong attack. Thus
you make sure that your signal source (e.g. instrument) provi-
des the input-stage of the amplifi er with the necessary input.
The
clip
-LED indicates an overload. A short fl icker is of no
danger to AER devices. During operation a short fl icker
can be accepted, to be on the safe side you should reduce
the
gain
slightly to achieve an optimal and distortion-free
performance.
input 1
input 2
gain1
gain 2
clip
piezo
line
clip
mute
48
9
L
M
P
P/M
mute
bass
freq.
middle
treble
pan
return
program
master
power
band
width
V/U
Compact
Classic
professional
effect
6. Function description
6.1 Mute
The
mute
-switch mutes the device.
The mute-switch can be activated by a footswitch. The
mute-switch on the top board is than without function
6.2 Tone control
The
Compact
Classic pro is equipped with a bass-paramet-
ric 3-band-tone control with aff ects both input channels.
This is an active high-quality sound modifi cation on the one
hand, that allows you to change the sound of your instru-
ment specifi cally, on the other hand, you can counteract
resonance / feedback problems in the lower registers.
The bandwidth switch changes the function of the bass EQ
of wide-on narrowband.
In order to
eliminate feedback
and unwanted resonan-
ces select the
narrowband setting
(switch pressed) in
combination with a
low bass knob position
(possibly to the
left), then you can dampen selectively with the frequency-
control the interfering frequencies.
To match the amount of play you can combine the treble
control and presence knob (on the back of the amplifi er) to
fi nd your very personal sound.
Note: there is no panacea for the use of an EQ, try to intui-
tively fi nd your favorite sound, each diff erent combination
of instrument pickup and Enhancement requires a custom
EQ setting.
