Phantom Power - AER MM 200 User Manual

5.5 Phantom power

5.5.1 9V Phantom power
Channel 1 of the MM 200 is equipped with 9V
phantom power as current supply for external de-
vices, e.g. active guitar electronics. A stereo-jack-
cable is required for this purpose, phantom power
is switched on by the 9V-switch on the rear side of
the MM 200 and is connected to the ring-contact
of the jack plug. Signal sources which don't requi-
re phantom power may as usual be connected via
mono jack cable, please ensure that phantom pow-
er is switched off in that case.
Note: Wrong use of phantom power may damage
your pickup or additional equipment. To avoid harm,
please regard the following hints:
e Only units which are explicitly designed for this
operation purpose should be provided with 9V
phantom power. In all other cases (as well if you are
in doubt) keep the switch off = not pressed.
e To be on the safe side always use mono jack cable,
when no phantom power is needed.
e Make sure that cables are plugged-in completely,
avoid leaving the plug halfway pulled out.
5.5.2 48V Phantom power
The XLR-socket of channel 2 is equipped with 48V-
phantom power for microphones that require this
(e.g. condenser microphones).
P.S. For further questions or suggestions contact us:
tachauch@aer-amps.com
General Note: Use of 48V or 24V 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 connec-
ted to an XLR socket is designed to handle it!
In general, suitable units are e.g. condenser micro-
phones, active DI-boxes and other special audio
devices, whose power supply is drawn from the
phantom power. Such devices are also labelled ac-
cordingly; please heed the permissible power con-
sumption (max.10mA).
High-quality dynamic microphones with a balanced
signal need no phantom power, but can handle it
anyway.
Other devices, which have not been designed expli-
citly for phantom power operation, can suffer from
considerable malfunctions and damage may result
as well.
Examples of devices that may be damaged by in-
correct application of phantom power include:
Low-cost dynamic microphones with a mono jack-
plug (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 pe-
dals etc.) whose unbalanced line output was repla-
ced by an XLR socket.
If in doubt please consult the manufacturer of the
device you are using.
9