Starting Up; Cabling And Switching On; Level Adjustment; Functional Characteristics - AER Compact 80 pro Manual

4. Starting up

4.1 Cabling and switching on

Before connecting to mains, please ensure that your
the type label on the rear side of the unit.
Connecting to the wrong mains voltage may cause
serious damage to your amplifi er!
Make sure the phantom power is not switched on
unintentionally.
Then connect all cables according to your applica-
tion and switch the device on. The green power LED
indicates operational readiness.

4.2 Level adjustment

By proper level adjustment you adapt your
Compact 80 pro to your signal source.
For this purpose keep the master control initially
fully anticlockwise.
Gradually increase the appropriate gain setting as far
as possible but without triggering the red clip indica-
tor, even when you play loud. Thereby you keep some
headroom for unexpected peak levels.
Very strong sources may cause a clipping warning
despite a low gain setting.
Finally set the desired volume using the master
control.
• If the gain setting is too low, the amplifi er may
not reach the desired volume, or distracting noise
may become noticeable.
• Setting the gain too high causes distorted sound
(clipping). The clip light will warn you before this
happens.
• If you use an instrument with a volume control,
start off with full volume but reduce it if the clip
indicator lights up early and the level adjustment
is diffi cult.
• Please ensure there is always enough battery
power in your (active) pick-up system. Humming
and sizzling may be caused by an empty battery.
local mains voltage
(e.g. 120V in the
USA, 230V in Europe)
matches the voltage
rating of the device,
which is printed on
• If several inputs are used simultaneously, you also
determine the mixing ratio by the individual gain
settings.
• The gain controls of any unused inputs should stay
fully anticlockwise.

5. Functional characteristics

5.1 Mute

The mute switch on the rear side turns the amplifi er to
mute as required.
This function can also be controlled by a footswitch.
When the footswitch is connected, the mute switch is
not in eff ect, but the muted state is still indicated by
the red mute LED.
5. 2 Tone controls
The tone controls of the amplifi er are a high-quality
sound modifi cation tool that preserves the natural
tone of instruments and voice and allows you to apply
targeted accentuations.
If bass, middle, and treble are in center position,
the colour switch is not pushed, the tone controls are
neutral and have no infl uence on the sound.
The amplifi er will already provide a very pleasant,
natural sound when all controls are in neutral position,
which you can then principally alter with the colour
fi lter (in channel 1). This will reduce the midrange
and bring out the trebles. The sound becomes more
open and lighter and is particularly suitable for fi nger
picking techniques. The tone controls can support or
attenuate the eff ect of the colour fi lter (see illustration
below).
colour bass middle
colour bass middle
Please note:
The tone controls have an eff ect on the signal level. If the
clip indicator fl ashes more frequently, reduce the level a bit
using the gain control (see also 4.2).
With colour-fi lter
treble
(switched pressed)
reduce treble
to soften possible
harshness
Without colour-fi lter
treble
(switch not pressed)
boost treble to
brighten the sound
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