Cambridge CXA61, CXA81 User Manual
CXA61/81
1
CXA61/81
INTEGRATED AMPLIFIER
Contents
IMPORTANT SAFETY INSTRUCTIONS 3
LIMITED WARRANTY 5
REAR PANEL CONNECTIONS 6
FRONT PANEL CONTROLS 7
REMOTE CONTROL 8
CONNECTIONS 9
BASIC CONNECTIONS 9
SPEAKER B CONNECTIONS 9
PREAMP OUT CONNECTIONS 9
BALANCED AUDIO CONNECTIONS (CXA81 ONLY) 9
USB AUDIO CONNECTION 9
SETUP MENU 10
AUTO POWER DOWN (APD) 10
CLIPPING FUNCTION 10
USB MODE 10
ADVANCED USB AUDIO 10
USE WITH PCS/MACS/ LINUX 10
BLUETOOTH AUDIO STREAMING 10
PAIRING 10
CONTROL BUS 11
STREAMMAGIC APP (VIA CXN) 11
CAP5 - FIVE WAY PROTECTION SYSTEM 12
TROUBLESHOOTING 12
TECHNICAL SPECIFICATIONS 13
This guide is designed to make installing and using this product as easy
as possible. Information in this document has been carefully checked for
accuracy at the time of printing; however, Cambridge Audio’s policy is
one of continuous improvement, therefore design and specications are
subject to change without prior notice.
This document contains proprietary information protected by copyright.
All rights are reserved. No part of this manual may be reproduced by
any mechanical, electronic or other means, in any form, without prior
written permission of the manufacturer. All trademarks and registered
trademarks are the property of their respective owners.
© Copyright Cambridge Audio Ltd 2019.
Make sure you register your CA product:
WWW.CAMBRIDGEAUDIO.COM/REGISTER
For upcoming news on future products, software updates and exclusive
oers.
Support
FAQS AND SUPPORT
Please visit https://techsupport.cambridgeaudio.com
GET IN CONTACT WITH OUR
DEDICATED TECHNICAL SUPPORT TEAM:
support@cambridgeaudio.com
UK
US: +1 877 357-8204
HK: +852 2882 4000
Important safety instructions
For your own safety please read the following important safety instructions
carefully before attempting to connect this unit to the mains power supply.
They will also enable you to get the best performance from and prolong the
life of the unit:
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with a dry cloth.
7. Do not block any ventilation openings. Install in accordance with the
manufacturer’s instructions.
8. Do not install near any heat sources such as radiators, heat registers,
stoves, or other apparatus (including ampliers) that produce heat.
9. Do not defeat the safety purpose of the polarized or grounding-type
plug. A polarized plug has two blades with one wider than the other.
A grounding-type plug has two blades and a third grounding prong.
The wide blade or the third prong are provided for your safety. If the
provided plug does not t into your outlet, consult an electrician for
replacement of the obsolete outlet.
10. Protect the power cord from being walked on or pinched, particularly
at plugs, convenience receptacles and the point where they exit from
the apparatus.
11. Only use attachments/accessories specied by the manufacturer.
12. Use with only the cart, stand, tripod, bracket, or table
specied by the manufacturer, or sold with the apparatus.
When a cart is used, use caution when moving the cart/
apparatus combination to avoid injury from tip-over.
13. Unplug this apparatus during lightning storms or when unused for
long periods of time.
14. Refer all servicing to qualied service personnel. Servicing is required
when the apparatus has been damaged in any way, such as the powersupply cord or plug having been damaged, liquid has been spilled or
objects have fallen into the apparatus, the apparatus has been exposed
to rain or moisture, does not operate normally, or has been dropped.
WARNING:
- Do not place the unit in an enclosed space; if you wish to place the
unit on a shelf, use the top shelf to allow maximum ventilation. Do not
put any objects on top of this unit. Do not situate it on a rug or other
soft surface and do not obstruct any air inlets or outlet grilles. Do not
cover the ventilation grilles with items such as newspapers, tablecloths,
curtains, etc.
- To reduce the risk of re or electric shock, do not expose this apparatus
to rain or moisture . This unit must not be used near water or exposed
to dripping or splashing water or other liquids. No objects lled with
liquid, such as vases, shall be placed on the unit.
- Danger of explosion if battery is incorrectly replaced. Replace only with
the same or equivalent type.
- The battery (battery pack or batteries installed) shall not be exposed to
excessive heat such as sunshine, re or the like.
- The unit must be installed in a manner that makes disconnection of
the mains plug from the mains socket outlet (or appliance connector
from the rear of the unit) possible. Where the mains plug is used as the
disconnect device, the disconnect device shall remain readily operable.
- Please refer to the information on the exterior rear panel for electrical
and safety information before installing or operating the apparatus.
- Only use the mains cord supplied with this unit.
Use of the apparatus in tropical climates - The equipment shall be used at
a maximum 45 degree C ambient temperature.
The unit is of Class 1 construction and must be connected to a mains socket
outlet with a protective earthing connection.
The lightning ash with the arrowhead symbol within an equilateral
triangle is intended to alert the user to the presence of un-insulated
'dangerous voltage' within the product’s enclosure that may be of sucient
magnitude to constitute a risk of electric shock to persons.
Warning: To reduce the risk of electric shock, do not remove cover (or
back) as there are no user-serviceable parts inside. Refer servicing to
qualied personnel.
The exclamation point within an equilateral triangle is intended to
alert the user to the presence of important operating and maintenance
instructions in the service literature relevant to this appliance.
VENTILATION
Important! The unit will become hot when in use. Do not stack multiple
units on top of each other.
Ensure that small objects do not fall through any ventilation grille. If this
happens, switch o immediately, disconnect from the mains supply and
contact your dealer for advice.
POSITIONING
Choose the installation location carefully. Avoid placing it in direct
sunlight or close to a source of heat. No naked ame sources, such as
lighted candles, should be placed on the unit. Also avoid locations subject
to vibration and excessive dust, cold or moisture. The unit can be used in
a moderate climate.
This unit must be installed on a sturdy, level surface. Do not place in a
sealed area such as a bookcase or in a cabinet. Do not place the unit on
an unstable surface or shelf. The unit may fall, causing serious injury to a
child or adult as well as serious damage to the product. Do not place other
equipment on top of the unit.
Due to stray magnetic elds, turntables or CRT TVs should not be located
nearby due to possible interference.
Electronic audio components have a running in period of around a week (if
used several hours per day). This will allow the new components to settle
down and the sonic properties will improve over this time.
POWER SOURCES
The unit should be operated only from the type of power source indicated
on the marking label. If you are not sure of the type of power-supply to your
home, consult your product dealer or local power company.
If you do not intend to use this unit for a long period of time, unplug it from
the mains socket.
OVERLOADING
Do not overload wall outlets or extension cords as this can result in a risk
of re or electric shock. Overloaded AC outlets, extension cords, frayed
power cords, damaged or cracked wire insulation and broken plugs are
dangerous. They may result in a shock or re hazard.
Be sure to insert each power cord securely. To prevent hum and noise, do
not bundle the interconnect leads with the power cord or speaker leads.
CLEANING
To clean the unit, wipe its case with a dry, lint-free cloth. Do not use any
cleaning uids containing alcohol, ammonia or abrasives. Do not spray an
aerosol at or near the unit.
BATTERY DISPOSAL
Batteries may contain substances harmful to the environment. Please
dispose of any discharged batteries with due consideration and in
accordance with local environmental/electronic recycling guidelines.
SERVICING
These units are not user serviceable. Never attempt to repair, disassemble
or reconstruct the unit if there seems to be a problem. A serious electric
shock could result if this precautionary measure is ignored. In the event of
a problem or failure, please contact your dealer.
CXA61/81
3
WEEE SYMBOL
The crossed-out wheeled bin is the European Union symbol
for indicating separate collection for electrical and electronic
equipment. This product contains electrical and electronic
and should not be disposed of with unsorted regular waste. Please return
-
the unit or contact the authorised dealer from whom you purchased this
product for more information.
Environmentally-friendly design of Energy-related Products (2009/125/
EC) Directives when used and installed according to this instruction
manual. For continued compliance only Cambridge Audio accessories
should be used with this product and servicing must be referred to
qualied service personnel.
Due to the surface of both heat sinks being unsuitable to attach a label,
there is no sticker on the product.
FEDERAL COMMUNICATIONS COMMISSION
Supplier’s declaration of conformity (SDoC)
Equipment: Integrated Amplier
Model: CXA61 / CXA81
Trademark: Cambridge Audio
This device complies with Part 15 of the FCC Rules. Operation is subject
to the following two conditions: (1) this device may not cause harmful
interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
The responsible party in US:
Company name: Audio Partnership LLC
Address:
1913 N Milwaukee Ave. Chicago, IL 60647
Phone: (312) 636-4817
Legal Representative Person:
Gregg Chopper
Signature:
FEDERAL COMMUNICATIONS COMMISSION NOTICE:
This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in
a residential installation.
This equipment generates, uses, and can radiate radio frequency energy,
and if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications. However, there is
no guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment o and on,
the user is encouraged to try and correct the interference by one or more
of the following measures:
equipment which should be reused, recycled or recovered
CE MARK
This product complies with European Low Voltage (2014/35/
EU), Electromagnetic Compatibility (2014/30/EU) and
RCM (REGULATORY COMPLIANCE MARK)
This product meets Australia, New Zealand Safety, EMC and
Radio Communications requirements of the ERAC and ACMA.
CU-TR MARK
This product meets Russia, Byelorussia and Kazakhstan
electronic safety approvals.
CAUTION: HOT SURFACE. DO NOT TOUCH
Both side heat sinks of the product may become hot when
operating this product continuously.
• Reorient or relocate the receiving antenna.
• Increase the distance between the equipment and the receiver.
• Connect the equipment to an outlet on a circuit dierent from that to
which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
FCC Caution: Any changes or modications not expressly approved by the
party responsible for compliance could void the user’s authority to operate
this equipment.
RF Exposure Statement:
To maintain compliance with FCC’s RF Exposure guidelines. This
equipment should be installed and operated with a minimum distance of
20cm between the radiator and your body. Use only the supplied antenna.
Modications:
The FCC requires the user to be notied that any changes or modications
to this device that are not expressly approved by Cambridge Audio, may
void the user’s authority to operate the equipment.
CANADA-INDUSTRY CANADA (IC)
This radio transmitter has been approved by Industry Canada.
This device complies with Industry Canada’s license-exempt RSSs.
Operation is subject to the following two conditions.
(1) this device may not cause interference and (2) this device must accept
any interference, including interference that may cause undesired
operation of the device.
This equipment should be installed and operated with a minimum
distance of 20cm between the radiator and your body.
The transmitter must not be co-located or operating in conjunction with
any other antenna or transmitter.
The device meets the exemption from the routine evaluation limits in
section 2.5 of RSS 102 and compliance with RSS-102 RF exposure, users can
obtain Canadian information on RF exposure and compliance.
INDUSTRIE CANADA (IC)
Le présent appareil est conforme aux CNR d’Industrie Canada applicables
aux appareils radio exempts de licence. L’exploitation est autorisée aux
deux conditions suivantes :
(1) l’appareil ne doit pas produire de brouillage, et (2) l’utilisateur de
l’appareil doit accepter tout brouillage radioélectrique subi, même si le
brouillage est susceptible d’en compromettre le fonctionnement.
Cet équipement doit être installé et utilisé à une distance minimale de 20
cm entre le radiateur et votre corps.
L’émetteur ne doit pas être co-placé ni fonctionner en conjonction avec
une autre antenne ou transmetteur.
Le dispositif rencontre l’exemption des limites courantes d’évaluation
dans la section 2.5 de RSS 102 et la conformité à l’exposition de RSS-102
rf, utilisateurs peut obtenir l’information canadienne sur l’exposition et la
conformité de rf.
EUROPE-EUROPEAN UNION NOTICE
Hereby, Audio Partnership PLC declares that this product is in compliance
with Directive 2014/53/EU, the full text of the EU declaration of conformity
is available at the following internet address:
https://ww w.cambridgeaudio.com/DoC
Bluetooth Radio Frequency:
2.402GHz-2.48 GHz The Max. transmit power: 10dBm.
Limited warranty
Cambridge Audio warrants this product to be free from defects in materials
and workmanship (subject to the terms set forth below). Cambridge Audio
will repair or replace (at Cambridge Audio’s option) this product or any
defective parts in this product. Warranty periods may vary from country
to country. If in doubt consult your dealer and ensure that you retain proof
of purchase.
To obtain warranty service, please contact the Cambridge Audio authorised
dealer from which you purchased this product. If your dealer is not
equipped to perform the repair of your Cambridge Audio product, it can be
returned by your dealer to Cambridge Audio or an authorised Cambridge
Audio service agent. You will need to ship this product in either its original
packaging or packaging aording an equal degree of protection.
Proof of purchase in the form of a bill of sale or receipted invoice, which
is evidence that this product is within the warranty period, must be
presented to obtain warranty service.
This Warranty is invalid if (a) the factory-applied serial number has been
altered or removed from this product or (b) this product was not purchased
from a Cambridge Audio authorised dealer. You may call Cambridge
Audio or your local country Cambridge Audio distributor to conrm that
you have an unaltered serial number and/or you made a purchase from a
Cambridge Audio authorised dealer.
This Warranty does not cover cosmetic damage or damage due to acts of
God, accident, misuse, abuse, negligence, commercial use, or modication
of, or to any part of, the product. This Warranty does not cover damage due
to improper operation, maintenance or installation, or attempted repair
by anyone other than Cambridge Audio or a Cambridge Audio dealer,
or authorised service agent which is authorised to do Cambridge Audio
warranty work. Any unauthorised repairs will void this Warranty. This
Warranty does not cover products sold AS IS or WI TH ALL FAULTS.
REPAIRS OR REPLACEMENTS AS PROVIDED UNDER THIS WARRANTY
ARE THE EXCLUSIVE REMEDY OF THE CONSUMER. CAMBRIDGE AUDIO
SHALL NOT BE LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL
DAMAGES FOR BREACH OF ANY EXPRESS OR IMPLIED WARRANTY IN
THIS PRODUCT. EXCEPT TO THE EXTENT PROHIBITED BY LAW, THIS
WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER EXPRESS AND
IMPLIED WARRANTIES WHATSOEVER INCLUDING, BUT NOT LIMITED
TO, THE WARRANTY OF MERCHANTABILITY AND FITNESS FOR A
PRACTICAL PURPOSE.
Some countries and US states do not allow the exclusion or limitation of
incidental or consequential damages or implied warranties so the above
exclusions may not apply to you. This Warranty gives you specic legal
rights, and you may have other statutory rights, which vary from state to
state or country to country.
For any service, in or out of warranty, please contact your dealer.
CXA61/81
5
Rear panel connections
1 2 3 4 5 6 7 9 11 128 10 13
1. AC POWER SOCKET
Once you have completed all connections to the amplier, plug the
AC power cable into an appropriate mains socket then switch on. Your
amplier is now ready for use.
2. RS232C
Custom install control - a full protocol is available for the CXA on our
website.
3. 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.
4. IR IN
Allows modulated IR commands from an IR repeater or custom install
systems to be received by the amplier.
5. TRIGGER IN/OUT
The CXA can be connected to the trigger control output of home
automation equipment to control the power state of the CXA. The input
level should be 12V.
The trigger out will go high while the CXA is powered on. This can be used
to turn on other equipment that has a trigger in.
6. LOUDSPEAKER TERMINALS
Important Note: When using a banana plug, make sure the speaker
terminals are completely tightened before inserting the plug.
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 o 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 aected if the screw terminals are loose.
7. SUB OUT
Connect to the input on an active subwoofer if required.
8. PRE-OUT
For connection to the unbalanced inputs of a power amplier or active
subwoofer.
9. BLUETOOTH ANTENNA
Used for bluetooth audio streaming. See Bluetooth section for details
10. ANALOGUE INPUTS (A1 UNBALANCED, 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.
11. USB AUDIO IN
A USB B type socket is tted to the CXA 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 certied 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 CXA o 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.
12. 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 bre optic interconnect
cable designed specically for audio use. This input is suitable for 16-24 bit
content up to 96kHz (TOSLINK is not recommended 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.
13. A1 INPUTS
Note: Balanced (XLR) is available on the CXA81 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).
Front panel controls
1 2 3 4 5 76 98
8CAMBRIDGE
SPEAKER
e A B e
0
0
• 0
@@
CXA61/81
7
0
1. STANDBY/ON
Switches the unit between Standby mode (indicated by dim power LED)
and On (indicated by bright power LED). Standby mode is a low power
mode where the power consumption is less than 0.5 Watts. The unit
should be left in Standby mode when not in use.
This product has APD (Auto Power Down) enabled as default. After
inactivity of 20 minutes, the product will automatically switch to Standby.
See the 'Setup menu' section for further details.
2. MP3 INPUT (CXA61 ONLY)
This source input allows you to connect a portable audio device such as an
MP3 player directly into the front of the unit using the 3.5mm stereo-jack.
Note: The MP3 input can only be selected when a jack is inserted. Plugging
in a device into the jack socket automatically selects the MP3 input. With
the jack inserted pressing the A4 button will toggle between A4 and MP3
inputs. The MP3 input is shown by A4 being lit orange.
3. HEADPHONES
Allows for the connection of stereo headphones with a 3.5mm jack
plug. Headphones with an impedance of between 8 and 600 ohms are
recommended.
Note: Plugging in headphones will automatically mute the loudspeaker,
pre-out, and sub outputs.
4. ANALOGUE SOURCE SELECT BUTTONS
Push the appropriate input selection button to select the source that you
wish to listen to.
Note: On the CXA81, pressing the A1 input selection button will toggle
between balanced and unbalanced. The balanced input is shown by A1
being lit orange.
5. PROTECTION INDICATOR
See the 'CAP5' section for further details.
7. MUTE INDICATOR
The light will ash to show the outputs are muted.
8. DIGITAL SOURCE SELECT BUTTONS
Push the appropriate input selection button to select the source that you
wish to listen to.
Note: Pressing the Bluetooth/USB button will toggle between the two
inputs. The USB audio is shown by the symbol being lit orange.
9. VOLUME
Use to increase/decrease the level of the sound from the outputs of the
amplier. This control aects the level of all outputs.
6. SPEAKER A/B
Press to scroll through the speaker sets connected to the loudspeaker
terminals on the back panel (speaker sets A, B or A and B). This can be
used for listening to an extra set of loudspeakers in another room. See the
'Connections' section for further details.
Loading...