Cloud 46-80 - Output Connections

46-80 Installation and User Guide V1.0
20
Speaker outputs (Lo-Z)
The power amplier outputs on Model 46-80 are available
on an 8-pin, 5 mm-pitch screw-terminal connector SPEAKER
OUTPUTS ([16] on page 13): rst remove the safety cover
protecting it (2 x M3 screws). Four mating 2-pin connectors
are supplied; the outputs for all four zones are present on the
connector. Connect to speakers using pairs of terminals as
shown in the table:
Pin (L to R) Panel
marking
Connect to:
1
Z1 -
Zone 1 output ‘-’
2
Z1 +
Zone 1 output ‘+’
3
Z2 -
Zone 2 output ‘-’
4
Z2 +
Zone 2 output ‘+’
5
Z3 -
Zone 3 output ‘-’
6
Z3 +
Zone 3 output ‘+’
7
Z4 -
Zone 4 output ‘-’
8
Z4 +
Zone 4 output ‘+’
Each output stage is designed to drive into an impedance
of not less than 4 ohms. Check the impedance of the
loudspeaker(s) in use and, taking into account any series and/
or parallel wiring, ensure that the total load on each channel
is not less than 4 ohms.
Speaker outputs (70/100 V-line operation)
Model 46-80T has four CXL-80T transformers pre-installed
and is thus ready for 70/100 V-line operation. Any or all zone
outputs of Model 46-80 may be converted for 70/100 V-line
operation by retrotting CXL-80T transformers as necessary.
See page 29 for details of CXL-80T transformer installation.
Note that immediately below the SPEAKER OUTPUTS
connector the rear panel is printed with check boxes marked
4 OHMS and 70/100V to indicate how the output is
congured for each zone. These will be marked according to
model type (46-80 or 46-80T) prior to shipment.
In Model 46-80T, the factory-tted CXL-80Ts are wired for 70
V-line operation in units for North American territories and
Australia, and for 100 V-line operation in units for Europe.
This can be changed if wished by moving internal connectors.
Use the same speaker wiring as shown for low-
impedance operation in the table above.
Ensure that the unit is disconnected from the AC
mains supply when making connections to avoid any risk of
electric shock
IMPORTANT - After making the connections and plugging
in the mating connectors, ret the safety cover over the
SPEAKER OUTPUTS socket. Making contacts carrying
70 V or 100 V inaccessible is likely to be a legal requirement
in most territories.
When the 46-80 is congured for 100/70 V-line operation,
the 65 Hz high-pass lters in each zone to be used in this
mode should be enabled: this is done by moving internal
jumpers. Model 46-80T has the lters pre-enabled at the
factory. See page 24 for full details.
Utility/Loop output
The UTILITY/LOOP OUTPUT is an additional balanced
line level output which is primarily intended for driving an
external hearing loop amplier, but can also can be used for
any other purpose. The source may be the programme in any
of the four Zones or always either Line Input 1 or Line Input
6, and is selected by rear panel DIP switches. See page 24
for full details.
The output connector is a 3-pin, 3.5 mm-pitch screw terminal
type ([17] on page 13), wired as follows
PIN CONNECTION
1 Screen
2 Signal ‘-‘ (cold)
3 Signal ‘+’ (hot)
Auxiliary line outputs
In large zones, it may be necessary to use additional ampliers
to obtain the necessary power to drive a greater number of
loudspeakers, or to drive some loudspeaker types requiring
higher power levels than the 80 W available from each of
the 46-80’s outputs. To permit the connection of further
ampliers - or any other equipment - balanced outputs from
Zones 1 and 2 pre-amplier sections are available at the rear
panel AUX OUT connectors, [14] at page 13.
The two connectors are of 3-pin, 3.5 mm-pitch screw terminal
type. Wire using the pinout in the table below:
PIN CONNECTION
1 Screen
2 Signal ‘-‘ (cold)
3 Signal ‘+’ (hot)
Connect to balanced inputs on external equipment with
twin-and-screen cable. The auxiliary outputs may also be
connected to unbalanced inputs: Cloud recommend the use
of external balancing transformers to achieve this, as shown
below:
AUX OUT:
pin 1 ground
pin 2 hot
pin 3 cold
+
-
SCN
Unbalanced
input
SCN
+
-
SCN
Audio balancing transformer
1 32