Proel AUP4150 - Manuale (Pagina 18)

(6) Fuse protection
Protects the unit from eventual main power supply variations and
current fluctuation . Can be replaced if necessary
(7) Power supply selector 230/117Vca 50/60Hz.
(8) Output terminal screws for speakers line
These 5 terminal screws are used to connect diffusers 8/4ohm, 70 V
and 100 V.
(9) Input balanced connectors
For external connections of audio signal to be amplified (pre-amplifier-
mixer or another amplifier etc..) this input is dedicated for signal of
high level
(10) Terminal screws for telephone connections purposes.
Input for audio telephone signal of high level. This input is only for
signal of high level – the signal can be balanced or unbalanced .
(11) (Gain control for telephone input .
(12) PA-HF Filter.
Allows HF frequencies range filter insertion with a break at 400 Hz -
3dB.
Such filter is necessary to pilot horn speakers when present in the
installation and for voice signal diffusion
.
(13) Ground Terminal screws
(14) Main power plug
(15) Brackets for 19” racks mounting purposes .
FRONT PANEL
fig.1