6
Rear panel connections
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
1
2
3
4
6
5
7
8
9
10
1. AC power socket
Once you have completed all connections to the amplifier, plug the AC power
cable into an appropriate mains socket then switch on. Your amplifier is now
ready for use.
2. Loudspeaker terminals
Two sets of loudspeaker terminals are available, A (main loudspeaker
terminals) and B (secondary loudspeaker terminals). Both sets of speakers can
be turned on and off independently. Connect the wires from your left channel
loudspeaker to the Left + & - terminals, and the wires from the right channel
loudspeaker to the Right + & - terminals. In each case, the red terminal is the
positive output and the black terminal is the negative output.
Care should be taken to ensure no stray strands of wire short the speaker
outputs together. Please ensure that the loudspeaker terminals have been
tightened completely to provide a good electrical connection. It is possible for
the sound quality to be affected if the screw terminals are loose.
3. Sub Out
Connect to the input on an active subwoofer if required.
4. Pre-out
For connection to the unbalanced inputs of a power amplifier or active
subwoofer.
5. Analogue inputs (A2, A3 and A4)
These inputs are suitable for any ‘line level’ source equipment such as CD
players, DAB or FM/AM tuners etc.
Note:
These inputs are for analogue audio signals only. They should not be
connected to the digital output of a CD player or any other digital device.
6. A1 inputs
Note: Balanced (XLR) is available on the CXA80 only.
A1 inputs feature either unbalanced (phono/RCA) or balanced (XLR)
connections. The balanced connection is the higher quality option and can
reject noise and interference in the cable when used with other equipment that
supports this function. An XLR connector is wired Pin 1 - Ground; Pin 2 - Hot
(in-phase); Pin 3 - Cold (phase-inverted).
7. USB interface (CXA80 only)
A USB B type socket is fitted to the CXA80 to enable the playback of audio
from a personal computer running either Microsoft Windows or Apple Mac OS
X operating systems. Some builds of Linux are also suitable.
Note:
Always use a high quality USB connection cable certified as USB
Hi-Speed. USB cable connections longer than 3m may result in inconsistent
audio performance.
Always turn the volume to minimum, switch to another
input or turn the CXA80 off before plugging/unplugging
cables to the USB input or whilst booting up/shutting
down your PC/Mac.
Ground/Lift switch
The Ground/Lift switch enables the USB interface earth to be disconnected
from the CXA chassis earth. Disconnecting (lifting) the earth can be useful if
electronic hum is heard through the speakers when the USB input is selected.
The switch should otherwise be left in the Ground position.
8. Control Bus
RCA sockets used to send and receive power and volume commands from
other connected CX Series products. For more information on the Control
Bus, see Control Bus section.
9. BT100 (not supplied)
The Cambridge Audio BT100 Bluetooth adaptor should be plugged in here
adding wireless streaming bluetooth (A2DP/AVRCP) audio capability directly
from most phones, tablets and laptops. See the ‘Connections’ section for
further details.
10. Digital inputs (D1, D2 and D3)
TOSLINK and S/P DIF co-axial digital inputs.
Coaxial
– Use a high quality 75 ohm digital RCA Phono interconnect cable
(not one designed for normal audio use). This input is suitable for 16-24 bit
content up to 192kHz.
TOSLINK
Optical
– Use a high quality TOSLINK fibre optic interconnect cable
designed specifically for audio use. This input is suitable for 16-24 bit content
up to 96kHz (TOSLINK is not recommened at 192kHz sampling rates).
Note:
To obtain the best results from your system we recommend using only
high quality Cambridge Audio interconnects. This will ensure that you hear
your system as we designed it. Please ask you dealer for details.
