6
4. Installation
4.1
Location and general precautions
Locate the unit where it will not be exposed to rain or moisture. If fluid or a foreign
object enters the unit, disconnect the power plug. Do not pull by the cord; grasp the
plug firmly. Contact an authorised dealer or service centre.
Locate
the unit where it will be protected from heat and allow adequate ventil
ation.
Place it away from direct heat sources, such as heating vents and radiators. Make sure
the ventilation holes are not covered and air can circulate freely behind, beside, and
above the unit.
4.2 Mechanical considerations
When mounting the amplifier in a rack or enclosure ensure the rear of the unit is
adequately supported. The brackets, which are supplied, fit standard 19
-
inch (483mm)
rack mounting systems. THE FRONT PANEL IS NOT CAPABLE OF
SUPPORTING THE UNIT ON ITS OWN.
4.3 Thermal consideration
s
When mounting the amplifier in a rack or enclosure ensure
THERE IS ADEQUATE
VENTILATION.
The cooling fans suck cool air in through the front and blow hot air
out at the rear of the unit through the ventilating grills
.
IF THIS AIR IS NOT
ALLOWED TO ESCAPE, OVERHEATING WILL OCCUR. Take care when
mounting other equipment in the same rack.
4.4 AC power considerations
The
B
1500
and B2000 power amplifiers have been manufactured to comply with
local power supply requirements. Both have been set at a mains voltage of 240Volts.
Be sure to
connect
your power amplifier
to
a supply capable of supplying the correct
voltage and adequate current to allow full-
power
operation of the power amplifier.
The current demand of a power amplifier varies depending on the impedance of the
load,
the output level of the power amplifier and content of the program material.
Before connecting the unit to the supply, ensure that the voltage (printed on the rear
panel
of the amplifier) is correct and that a mains fuse of the correct type and rating
has been fitted in the fuse holder on the rear panel of the amplifier (The B2000 is
fitted with a circuit breaker and hence does not have a mains fuse on the rear panel).
Mains cabling to both the B
1500
and the B2000 should be protected by suitable over
current device.
Note:
To convert the B
1500
and B2000 to 220V operation, one should proceed as follows
(see also
the following picture):
Locate the violet & brown wires from the mains transformer to the PCB spade
connectors marked up as Live Tx and Spare Tx . Connect the violet wire to Live
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