CXL-80T Installation Instructions v1.0
1
CXL-80T
70/100 V Transformer
Installation Instructions
Important Safety Notes
It should be recognised that 100 V-line or 70 V-line speaker systems have the
potential to deliver an electric shock. Install the CXL-80T only in accordance
with these instructions.
In all cases, the external wiring and associated speakers will need to comply
with local electrical regulations for AC voltages up to 100 Vrms (141 Vpeak).
Do not expose the transformer to rain or moisture.
The transformer module must be installed in a safe manner.
Cloud Electronics Ltd. accept no responsibility for hazardous installations.
CXL-80T Installation Instructions v1.0
2
INTRODUCTION
The CXL-80T is an optional transformer for the 46-80 Multi-Zone Mixer Amplifier, to permit the Mixer Amplifier to directly drive
100 V-line or 70 V-line loudspeaker systems. The transformer is rated at 80 W output, and is mounted internally. Up to four
CXL-80Ts (one per output channel) may be fitted to a 46-80. The outputs are available on the 8-pin 5 mm-pitch screw-terminal
SPEAKER OUTPUTS connector on the host unit’s rear panel.
Speaker Outputs
123
ON
45
123
ON
4
5
6
7
8 123
ON
4
5
6
7
8
MICROPHONE 1 / PAGE MIC
BALANCED
INPUT
123
50dB
GAIN
LF
HF
+10
dB
dB
+10-10
-+
+10-10
MICROPHONE 2
BALANCED
INPUT
123
50dB
GAIN
LF
HF
+10
dB
dB
+10-10
-+
+10-10
MIC 1 ACCESS
ACCESS CONTACTS
SHORT PINS TO 0V
FOR PAGE ACCESS
0V Z1 Z2 Z3 Z4 +V
OFF ON
OFF ON
OFF
ON
N/O N/C
MIC
PG
MIC2 PHANTOM PWR
MIC OVER MUSIC
MIC1 PHANTOM PWR
PAGING MODE
MUTE - N/O OR N/C
LEVEL
dB
+10-10
DIGITAL PAGE MIC
CDPM IN
FACILITY PORT MUSIC MUTE
CONNECT TO RELAY
ISOLATED CONTACTS
SW1: CONFIG
SPEAKER OUTPUTS
Z1
-+
70/100V
4 OHM
Z2
-+
4 OHM
Z3
-+
4 OHM
Z4
-+
4 OHM
70/100V 70/100V 70/100V
GAIN
dB
+10-10
GAIN
dB
+10-10
GAIN
dB
+10-10
GAIN
dB
+10-10
GAIN
dB
+10-10
GAIN
dB
+10-10
MIC
100
MUSIC
100
123
-+
123
-+
123
-+
123
-+
123
-+
R
L
R
L
R
L
R
L
R
L
R
L
LINE INPUTS
LINE 1 LINE 2 LINE 3LINE 4 LINE 5LINE 6
123
UTILITY/LOOP OUTPUT AUX OUT
ZONE 1
ZONE 2
REMOTE MUSIC CONTROL
EACH 3 PIN CONNECTOR IS INTENDED FOR USE WITH RL-6/RL-1
SERIES REMOTE WALL PLATES
REFER TO USER GUIDE FOR FULL DETAILS
OFF ON
15M30M
0
1
ZONE 2
123
ZONE 1
123
ZONE 3
123
ZONE 4
123
LOC
REM
LOCREM
LOC
REM
LOCREM
LOC
REM
LOCREM
LOC
REM
LOCREM
OFFON
OFFON
01
0
1
SW2: CONTROLSW3: UTIL/PRI/APD
0V Rx Tx
RS232
Z4 SOURCE
Z4 LEVEL
Z3 SOURCE
Z3 LEVEL
Z2 SOURCE
Z2 LEVEL
Z1 SOURCE
Z1 LEVEL
APD ON
APD TIMING
LINE 6 PRIORITY Z1
LINE 6 PRIORITY ALL
UNUSED
UTILITY SOURCE A
UTILITY SOURCE B
UTILITY SOURCE C
MAX: 150W
POWER 47-63Hz
85-243V AC
CAUTION:
REPLACE WITH SAME
TYPE T5AH 250V FUSE
ATTENTION:
UTILIZER UN FUSIBLE
DE RECHARGE DE MEME
TYPE DE T5AH 250V.
[ ZONE 1 ]
NOTE: unlike some other Cloud multi-channel amplifiers, the 46-80 uses a single output connector for both low impedance and
70/100 V-line operation. Thus it is NOT possible for any channel of a 46-80 to drive both low impedance speakers and
70/100 V-line systems simultaneously. The check boxes below the connector should be used to indicate the standard each output
is set for.
FITTING THE CXL-80T TRANSFORMER
The CXL-80T transformer is a toroidal type, and is supplied pre-terminated with 2-pin and 3-pin connectors as shown:
RED
BLACK
PRIMARY
WINDING
CONNECTOR
(female)
SECONDARY
WINDING
CONNECTOR
(female)
WHITE
BLUE
MAUVE
46-80 Rear Panel
CXL-80T Installation Instructions v1.0
3
Pri. Sec.
From amplifier
output (Lo-Z)
To 70/100 V-line
speaker system
100 V
70 V
COM
Red
Black
White
Purple
Blue
CXL-80T
-
(0V)
+
Each transformer is also supplied with an M4 x 45 Posi-head bolt.
To convert one channel of a 46-80 to 70/100 V-line operation, proceed as follows:
1. Disconnect the 46-80 from the mains.
2. Remove the top cover (8 screws) and orient the unit with the rear panel towards you.
3. Mount the CXL-80T transformer on the right-hand side of the 46-80 chassis, using one of the holes in the side of the chassis
and the M4 bolt supplied with the transformer. The centre of the toroid has a captive M4 nut, so the bolt head should be on
the outside of the chassis. If fitting fewer than four CXL-80Ts, any of the fixing positions may be used. Orient the transformers
so that the flying leads face the rear of the chassis.
4. For the zone being converted to 70/100 V-line operation, unplug both ends of the relevant blue/white twisted pair which
connects the power amplifier modules to the 3-pin headers on the PCB immediately behind the SPEAKER OUTPUT
connector.There are four of these (one per zone): CON30 (Zone 1), CON31 (Zone 2), CON32 (Zone 3) and CON33 (Zone 4) -
see diagram on the following page.
CXL-80T Installation Instructions v1.0
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CON30 CON31 CON32 CON33
CON34 CON35 CON36 CON37
5. Identify the transformer’s primary winding – this is the red/black flying lead fitted with a 2-pin connector. Plug this into
the relevant power module output connector. Note that each module has two channels, that nearer the front of the chassis
powers Zones 1 and 2, the other Zones 3 and 4. Refer to the diagram on page 5.
6. If configuring the zone output for 100 V-line operation, plug the transformer’s secondary winding – the other flying lead
(blue/mauve/white) - into the 3-pin header behind the SPEAKER OUTPUT connector vacated in Step 4. (This will be the one
closer to the rear panel.)
7. If configuring the zone output for 70 V-line operation, plug the transformer’s other flying lead (blue/mauve/white) into the
alternative 3-pin header behind the SPEAKER OUTPUT connector (this will be the one further away from the rear panel). The
headers are CON34 (Zone 1), CON35 (Zone 2), CON36 (Zone 3) and CON37 (Zone 4).
8. For each zone being converted to 70/100 V-line operation, enable the channel’s 65 Hz hi-pass filter by moving the appropriate
jumper from OFF to ON: these are J3 (Zone 1), J4 (Zone 2), J5 (Zone 3) and J6 (Zone 4). This is important, as low frequency
signals at high level can saturate the transformer cores, causing unpleasant distortion and possibly activating the amplifier’s
limiter circuitry. See the following diagram for location of PCB jumpers.
CXL-80T Installation Instructions v1.0
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9. If converting further Zone outputs to 70/100 V-line operation, repeat Steps 3 to 8 for each output.
10. Replace the cover, using the original screws.
11. Mark the checkboxes below the SPEAKER OUTPUTS connector with a felt-tip pen to indicate the mode of operation for each
channel.
MAIN PCB
POWER MODULE – Z1 & Z2
POWER MODULE – Z3 & Z4
UPPER PCB
TO FRONT PANEL PCB
Z1 Z2 Z3 Z4
Output connectors for Lo-Z or
100 V-line operation
Output connectors for
70 V-line operation
J1
J2
J3
J4
J5
J6
J7
J8
J9
J10
J11
J12
J13
Power module output
headers – Z1 & Z2
Power module output
headers – Z3 & Z4
Z2 Z1
Z4 Z3
46-80 MAIN PCB - REAR VIEW
SIMPLIFIED VIEW - ONLY PRIMARY
COMPONENTS SHOWN
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