Cloud 46 Series User Manual

46 Series Installation and User Guide V1.0
13
INSTALLATION
Hardware considerations
The 46 Series mixer-amplier is built in a 2U-high 19” rack
mount enclosure. It is recommended that it is installed in a
19” rack wherever possible. Both models are 430 mm deep:
it is recommended that at least 100 mm of additional rack
depth should be available to allow for rear connectors and
cabling.
The choice of installation location will be dictated by the
specics of the system and building layout. It is recommended
that wherever possible, the mixer-amplier should be
mounted adjacent to as many of the music sources (CD
players, music servers, TV receiver boxes, etc.) as practical.
When deciding the mixer-amplier’s location, bear in mind
that access to it (particularly the rear panel) will probably
be required even if a full complement of remote controls is
being tted as part of the system, as certain adjustments can
only be made on the unit itself.
Ventilation
46 Series mixer-ampliers use both convection and forced-
air cooling: at 45°C the internal fan is activated at low speed,
it switches to high speed if the temperature exceeds 60°C.
In both models, air is taken in through ventilation slots in the
front panel and exhausted through similar slots in the rear
panel: ensure that both sets are kept unobstructed by cabling
or any other items. It is recommended that a 1U blank panel
is tted above the mixer-amplier to aid heat dissipation;
slotted panels are not recommended as they defeat the
action of forced-air cooling.
46 Series mixer-ampliers have been designed to operate in an
ambient temperature range of 0°C to 35°C. While satisfactory
operation outside of this recommended temperature range
may be achievable in a particular installation, no guarantee
can be given regarding full adherence to the performance
specications (see the Appendix section of this manual).
Installers should always endeavour to t the mixer-amplier
in a location where the recommended temperature range
is not exceeded. To help achieve this, we recommend that
the unit is not rack-mounted immediately above other
equipment which generates heat (e.g., older designs of power
amplier).
If the unit is to be used free-standing (i.e., not mounted in
a rack), the push-rivet plastic feet supplied in the accessory
pack should be tted to the bottom of the enclosure.
Power Supply
46 Series mixer-ampliers have an internal power supply of
the “universal” type, and will operate on all AC mains supplies
of between 85 V and 265 V, 45 to 65 Hz. An IEC mains cable
with a plug appropriate for each country is supplied with the
unit. The units are very energy-efcient and consume less
than 10 W in Standby mode; see the Technical Specications
at page 31 for more details.
Fuses and ratings
The only externally-accessible fuse is the AC mains fuse
adjacent to the IEC receptacle on the rear panel. Only
replace a fuse with one of exactly the same type.
The table below gives the correct fuse type:
Model Fuse Type Fuse size Rating
46-120MK2 T5AH 250V 20 mm x 5 mm 5 A
46-240 T8AH 250V 20 mm x 5 mm 8 A
If a replacement fuse blows immediately, it indicates that
the mixer-amplier has developed a fault, which should be
referred to competent service personnel.
Internally, a 20 mm x 5 mm 2.5 A time-delay fuse protects
each power supply module (two in Model 46-120MK2,
four in Model 46-240). This is a service component, and
should not require attention. Failure of this fuse indicates a
fault condition, which should be immediately referred to a
competent technician or authorised service centre.

Cloud 46 Series Specifications

General

Channels	2
Signal-to-Noise Ratio	>100dB
Input Impedance	20k Ohms
Dimensions	19"
Weight	3.5kg