AXYS H90 Installation Manual - Page 12

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WIRING DETAILS

When the Intellivox ADC has been mounted in the correct
position, it may be connected up. Connection is
straightforward; having passed the cable through the gland,
connect the speaker feed to the 'L' and 'N' terminals of the
ceramic connection block.
The third terminal, marked with an Earth (Ground) symbol,
allows a separate earthing connection to be made to the
loudspeaker. This provides a low impedance circuit to earth
from the metalwork of the enclosure, as often required by
safety regulations. It should also be connected to a good
electrical earth if the system includes load monitoring
equipment which is is able to detect a short-circuit
condition between one of the 70/100 V lines and ground.
Note that this does not apply to the integral load
®
monitoring of the AXYS
PB400/800 Industry Amplifiers; if
these amplifiers are being used, the Earth terminal does not
need to be connected for surveillance purposes.
L
Brown
N
Blue
Green/yellow
L
Brown
N
Blue
Green/yellow
fig.8 - Wiring details
12
100 V-/70 V-line feed
(2-core cable)
To safety earth
100 V-/70 V-line feed
(3-core cable)
fig.9.1 - Fuse location

TAP SETTING

The internal 100 V/70 V transformer's primary tapping
should be set according to the power requirements of the
installation. This figure will have been determined at the
time of site analysis; see also the Maximum SPL figures in
the specifications table on the data sheet.
Always ensure that the amplifier is powered
down before making any changes to the tap
settings as if the audio suddenly becomes live there is a
strong risk of electric shock.
The tapping is set by moving the internal glass fuse to the
appropriate fuseholder. Three fuseholders are located
behind the inspection plate, labelled 100 W, 50 W and 25
W. These figures relate to the speaker use on a 100 V line
system, lower powers are available from a 70 V line system.
The table below summarises the output powers:
Max. output power (W)
Fuse
setting
100 V line system
100 W
100
50 W
50
25 W
25
fig.9 - Tap settings
25 W
50 W
100 W
fuses are located here
behind panel on inner top wall
H90
AXYS
®
Intellivox ADC Installation Manual
70 V line system
50
25
12.5
FUSEHOLDER
V90
fuses are
located here
behind panel
on left side wall
200905/ADCIM_v1.0