d&b D80 - Manual (Page 12)

4.2. Rack mounting and cooling
Rack mounting
The D80 amplifier enclosure is designed to fit standard 19"
equipment racks or cabinets.
When specifying a rack, be sure to allow extra depth (150 mm /
6" is usually sufficient) to accommodate the cables and connectors
at the rear of the amplifier.
When mounting D80 amplifiers into a 19" rack, do not just rely on
fixing and supporting the amplifiers by their front panels using
appropriate rack mounting screws and U washers as shown in the
graphic opposite. Provide additional support ...
–
by fixing the rear-mounted rack ears using appropriate rack
mounting screws and U washers as shown in the graphic
opposite. This is particularly important when amplifiers are
racked up for touring purposes.
– or using shelves fixed to the inner sides of the cabinet or rack.
Cooling
Thermal conditions are a vital factor to ensure operational safety of
the power amplifiers. The D80 amplifier is equipped with three
internal fans that draw cool air from the front into the housing and
channel the warm air towards the back of the device.
–
Please ensure that adequate cool airflow is provided.
– Do not block or cover the front panel air intake or the vents on
the rear panel.
– If amplifiers are installed in sealed cabinets (e.g. in fixed
installations), use additional fan modules with filters that can
be easily replaced without opening the sealed cabinets.
– Do not combine D80 amplifiers with D6 or D12 amplifiers in
one rack.
– Do not rack up D80 amplifiers together with other devices
producing additional heat with opposing airflows.
Base heat
Unlike other amplifiers, the D80 produces a base heat of approx:
40 °C (104 °F) in the rear part of the device when idling (On,
idling). During operation, this temperature will only increase
insignificantly. Please also refer to Þ Chapter 12.4. "Current/
power draw and thermal dissipation" on page 71.
d&b D80 Manual 1.9 en 12