Effects; Footswitch; Phantom Power - AER Alpha Plus Mode D'emploi

5.2 Effects

The Alpha Plus has a built-in (internal)
reverb-effect. The efx-level-control determines the
intensity of the internal effects (left stop = no effect).
Furthermore an additional effects unit (external ef-
fect) may be connected to the Alpha. For this purpo-
se use the send and return sockets on the rear side
of the amplifier (send goes to input, return to the
output of the external effects device). The intensity
of the effect is adjusted at the external effects unit.
The external effect loop works „parallel", the effect is
blended with the original signal.

5.3 Footswitch

A standard double-footswitch (on-/off-switch) can be
plugged into the footswitch-socket on the rear side
of the amplifier via stereo cable. By this footswitch
the internal and external effects can be switched on
and off.

5.4 Phantom power

Microphones requiring 48 V phantom power can
be directly connected to the XLR-socket of input 1.
Factory-provided phantom power is activated but,
if required, may be deactivated by an internal
jumper.
In contrary 9 V phantom power, if required, can
additionally be activated in input 2 by an internal
jumper.
Please note: For both alterations the device must
be opened, therefore only qualified service person-
nel may carry out the modifications concerning the
de-/activating of phantom power.
General Note:
Use of 48 V or 24 V phantom power
(Phantom power = remote supply, here:
powering an audio device via the connected
audio line)
Turn on the phantom power only if the unit
connected to an XLR socket that is designed to
handle it!
In general, suitable units are e.g. condenser
microphones, active DI-boxes and other special
audio devices, whose power supply is drawn
from the phantom power. Such devices are also
labelled accordingly; please heed the permissible
power consumption (max.10mA).
High-quality dynamic microphones with a ba-
lanced signal need no phantom power, but can
handle it anyway.
Other devices, which have not been designed
explicitly for phantom power operation, can
suffer from considerable malfunctions and dama-
ge may result as well.
Examples of devices that may be damaged
by incorrect application of phantom power
include:
Low-cost dynamic microphones with a mono
jackplug (unbalanced signal) that were fitted
afterwards with an XLR connector.
Audio devices with a balanced XLR output (e.g.
DI-boxes, effects devices, instrument preamps
with a DI output etc.) which are not protected
against phantom power applied to their XLR
output. (The DI connectors on AER products are
protected against applied phantom power.)
Other audio devices (such as preamps, effects
pedals etc.) whose unbalanced line output was
replaced by an XLR socket.
If in doubt please consult the manufacturer of the
device you are using.
We wish you lots of fun playing your Alpha Plus!
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