8
Connections
When designing our amplifiers we include features that allow you to connect
your system in various ways. The inclusion of features such as Pre-Out and
Speaker B connections mean that you can flexibly configure your system
depending on your requirements.
Basic connections
The diagram below shows the basic connection of your amplifier to a CD
player using the D3 coaxial digital input source and a pair of loudspeakers.
Power AC
Out
In
Out
In
USB Audio In
D3
BT100
D2
D1
Left
Right
Left
Right
Power Rating
:
220–230V AC ~ 50/60Hz
Max Power Consumption:
750W
Ground/Lift
Switch
Lift
Gnd
S/P DIF
Co-axial In
Toslink
Optical In
Toslink
Optical In
(Unbalanced)
(Unbalanced)
(Balanced)
(Balanced)
Right
Right
Left
Left
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CXA80 Integrated Amplifier
Designed & Engineered in UK
Made in China
Pre-out
A2
A1
A3
A4
Sub-Out
Control Bus
In
Out
In
Out
Mains Voltage Selector Switch:
100-120V/220-240V AC~50/60Hz
S/P DIF
Co-axial
Toslink
Optical
Digital Outputs
Digital Outputs
IR In
Control Bus
IR In
Control Bus
Power AC
D3
Left
Right
S/P DIF
Co-axial In
www.cambridgeaudio.com
CXA80 Integrated Amplifier
Designed & Engineered in UK
Made in China
S/P DIF
Co-axial
Digital Outputs
Digital Outputs
Speaker B connections
The Speaker B connections on the back of the amplifier allow for a second set
of speakers to be used (i.e. speakers located in another room). The Speaker
A/B button on the front panel scrolls through the selection of speaker A only,
speaker B only, and speaker A and B together.
Power AC
Out
In
Out
In
USB Audio In
D3
BT100
D2
D1
Left
Right
Left
Right
Power Rating
:
220–230V AC ~ 50/60Hz
Max Power Consumption:
750W
Ground/Lift
Switch
Lift
Gnd
S/P DIF
Co-axial In
Toslink
Optical In
Toslink
Optical In
(Unbalanced)
(Unbalanced)
(Balanced)
(Balanced)
Right
Right
Left
Left
www.cambridgeaudio.com
CXA80 Integrated Amplifier
Designed & Engineered in UK
Made in China
Pre-out
A2
A1
A3
A4
Sub-Out
Control Bus
Left
Right
Left
Right
www.cambridgeaudio.com
CXA80 Integrated Amplifier
Designed & Engineered in UK
Made in China
Preamp Out connections
The Preamp Out sockets are for connecting to the input sockets of a power
amplifier or active subwoofer. The diagram below shows how to connect the
amplifier to an active subwoofer via the Line In inputs on the subwoofer.
Power AC
Out
In
Out
In
USB Audio In
D3
BT100
D2
D1
Left
Right
Left
Right
Power Rating
:
220–230V AC ~ 50/60Hz
Max Power Consumption:
750W
Ground/Lift
Switch
Lift
Gnd
S/P DIF
Co-axial In
Toslink
Optical In
Toslink
Optical In
(Unbalanced)
(Unbalanced)
(Balanced)
(Balanced)
Right
Right
Left
Left
www.cambridgeaudio.com
CXA80 Integrated Amplifier
Designed & Engineered in UK
Made in China
Pre-out
A2
A1
A3
A4
Sub-Out
Control Bus
D3
Left
Right
S/P DIF
Co-axial In
www.cambridgeaudio.com
CXA80 Integrated Amplifier
Designed & Engineered in UK
Made in China
www.cambridgeaudio.com
CXA80 Integrated Amplifier
Designed & Engineered in UK
Made in China
www.cambridgeaudio.com
CXA80 Integrated Amplifier
Designed & Engineered in UK
Made in China
Line
In
Pre-out
Balanced audio connections (CXA80 only)
The diagram below shows how to connect the CXA80 to the CXN Network
player using the Balanced Audio inputs via three pin XLR connectors.
The CXA80 can also be connected to non-Cambridge Audio sources with
balanced outputs.
Power AC
Out
In
Out
In
USB Audio In
D3
BT100
D2
D1
Left
Right
Left
Right
Power Rating
:
220–230V AC ~ 50/60Hz
Max Power Consumption:
750W
Ground/Lift
Switch
Lift
Gnd
S/P DIF
Co-axial In
Toslink
Optical In
Toslink
Optical In
(Unbalanced)
(Unbalanced)
(Balanced)
(Balanced)
Right
Right
Left
Left
www.cambridgeaudio.com
CXA80 Integrated Amplifier
Designed & Engineered in UK
Made in China
Pre-out
A2
A1
A3
A4
Sub-Out
Control Bus
Voltage Rating:
100-230V AC ~ 50/60Hz
Rated Power Consumption:
30W
D1
Toslink Optical
D2
S/P DIF Co-axial
Ethernet
Toslink Optical
S/P DIF Co-axial
Ground/Lift
Switch
Right
Left
Right
Left
Lift
Gnd
Digital Outputs
USB Audio In
Digital Inputs
USB
Ethernet
Digital Outputs
USB Audio In
Digital Inputs
USB
For local media
In
Out
Control Bus
Balanced Audio Output
Balanced Audio Output
Line Output
Line Output
IR In
Wi-Fi Dongle
For local media
Wi-Fi Dongle
Power AC
CXN Network Player
Designed & Engineered in UK
Made in China
www.cambridgeaudio.com
CXA80 Integrated Amplifier
Designed & Engineered in UK
Made in China
www.cambridgeaudio.com
CXA80 Integrated Amplifier
Designed & Engineered in UK
Made in China
(Balanced)
(Balanced)
Right
Right
Left
Left
A1
Right
Left
Right
Left
Balanced Audio Output
Balanced Audio Output
Balanced connections in an audio system are designed to reject electrical
noise, from power wiring etc, and also the effects of noise currents flowing
through ground connections. The basic principle of balanced interconnection
is to get the signal you want by subtraction, using a three-wire connection.
One signal wire (the hot or in-phase) carries the normal signal, while other (the
cold or phase-inverted) carries an inverted version. The balanced input senses
the difference between the two lines to give the wanted signal. Any noise
voltages that appear identically on both lines (these are called common-mode
signals) are cancelled by the subtraction.
The CXA80 is designed to work at its highest performance when a balanced
interconnect is used.
Note: To select the balanced input on the CXA80, press the A1 button twice
on the front panel or on the remote control so that the A1 light on the front
panel display lights up Orange. Repeatedly pressing the A1 button will toggle
between balanced and unbalanced inputs.
