Integrated Amplifier
User’s manual
2
AM1/AM5
Your music + our passion
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AM1
AM5
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.
The lightning flash 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
sufficient magnitude to constitute a risk of electric shock to persons.
4. Follow all instructions.
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.
5. Do not use this apparatus near water.
6. Clean only with a dry cloth.
The symbol on this product indicates that it is of CLASS II
(double insulated) construction.
7. Do not block any ventilation openings. Install in accordance with the
manufacturer's instructions.
WEEE symbol
8. Do not install near any heat sources such as radiators, heat registers,
stoves, or other apparatus (including amplifiers) that produce heat.
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
equipment which should be reused, recycled or recovered 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.
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 fit 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.
CE mark
This product complies with European Low Voltage
(2006/95/EC), Electromagnetic Compatibility (2004/108/EC) and
Environmentally-friendly design of Energy-using Products (2005/32/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 qualified service
personnel.
11. Only use attachments/accessories specified by the manufacturer.
12. Use with only the cart, stand, tripod, bracket, or table
specified 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.
C-Tick mark
This product meets the Australian Communications Authority’s
Radio communications and EMC requirements.
14. Refer all servicing to qualified service personnel. Servicing is required
when the apparatus has been damaged in any way, such as the
power-supply 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.
Ross Test Stamp
This product meets Russian electronic safety approvals.
FCC regulations
NOTE: THE MANUFACTURER IS NOT RESPONSIBLE FOR ANY RADIO OR
TV INTERFERENCE CAUSED BY UNAUTHORIZED MODIFICATIONS TO THIS
EQUIPMENT. SUCH MODIFICATIONS COULD VOID THE USER AUTHORITY
TO OPERATE THE EQUIPMENT.
WARNING
– To reduce the risk of fire or electric shock, do not expose this unit to
rain or moisture.
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
– Batteries (battery pack or batteries installed) shall not be exposed to
excessive heat such as sunshine, fire or the like.
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.
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. Only use the
mains cord supplied with this unit.
If this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and on,
the user is encouraged to try to correct the interference by one or more of
the following measures:
Please ensure there is ample ventilation (at least 10cm clearance all
round). 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.
– Re-orient or relocate the receiving antenna.
This unit must not be used near water or exposed to dripping or splashing
water or other liquids. No objects filled with liquid, such as vases, shall be
placed on the unit.
– Increase the separation between the equipment and receiver.
– Connect the equipment into an outlet on a circuit different from that to
which the receiver is connected.
– Consult the dealer or an experienced radio/TV technician for help.
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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.
Ventilation
IMPORTANT - The unit will become hot when in use. Do not stack multiple
units on top of each other. Do not place in an enclosed area such as a
bookcase or in a cabinet without sufficient ventilation.
Ensure that small objects do not fall through any ventilation grille. If this
happens, switch off immediately, disconnect from the mains supply and
contact your dealer for advice.
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 affording an equal degree of
protection.
Positioning
Choose the installation location carefully. Avoid placing it in direct sunlight
or close to a source of heat. No naked flame 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.
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 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.
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
confirm that you have an unaltered serial number and/or you purchased
from a Cambridge Audio authorised dealer.
Due to stray magnetic fields turntables or CRT TVs should not be located
nearby due to possible interference.
This Warranty does not cover cosmetic damage or damage due to acts of
God, accident, misuse, abuse, negligence, commercial use, or
modification 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 WITH ALL
FAULTS.
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, 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.
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.
To turn the unit off, switch off at the front panel. 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 cord as this can result in a risk
of fire 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 fire hazard.
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 specific legal
rights, and you may have other statutory rights, which vary from state to
state or country to country.
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 fluids containing alcohol, ammonia or abrasives. Do not spray an
aerosol at or near the unit.
For any service, in or out of warranty, please contact your dealer.
Battery disposal
Please dispose of any discharged batteries according to local
environmental/electronic waste disposal guidelines.
Plug Fitting Instructions (UK Only)
Loudspeakers
The cord supplied with this appliance is factory fitted with a UK mains plug fitted
with a 3 amp fuse inside. If it is necessary to change the fuse, it is important that
a 3 amp one is used. If the plug needs to be changed because it is not suitable for
your socket, or becomes damaged, it should be cut off and an appropriate plug
fitted following the wiring instructions below. The plug must then be disposed of
safely, as insertion into a mains socket is likely to cause an electrical hazard.
Should it be necessary to fit a 3-pin BS mains plug to the power cord the wires
should be fitted as shown in this diagram. The colours of the wires in the mains
lead of this appliance may not correspond with the coloured markings identifying
the terminals in your plug. Connect them as follows:
Before making any connections to loudspeakers, make sure all power is
turned off and only use suitable interconnects.
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.
The wire which is coloured BLUE must be
connected to the terminal which is marked
with the letter ‘N’ or coloured BLACK.
The wire which is coloured BROWN must be
connected to the terminal which is marked
with the letter ‘L’ or coloured RED.
The wire which is coloured GREEN/YELLOW
must be connected to the terminal which is
marked with the letter ‘E’ or coloured GREEN.
If a 13 amp (BS 1363) plug is used, a 3 amp fuse must be fitted, or if any other
type of plug is used a 3 amp fuse must be fitted, either in the plug or adaptor, or
on the distribution board.
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AM1
AM5
Rear panel connections
4
1
2
3
1
Care should be taken to ensure no stray strands of wire are shorting the
speaker outputs together. Please ensure that the loudspeaker terminals
have been tightened adequately to provide a good electrical connection.
It is possible for the sound quality to be affected if the screw terminals are
loose.
Audio inputs
These inputs are suitable for any ‘line level’ source equipment such as the
audio outputs of CD players, BD/DVD players, etc.
2
Rec Out
Connect to a tape deck or to the analogue Record In sockets of a MiniDisc
or CD recorder etc.
4
AC power cable
Once all connections are complete, plug the captive AC power cable into
an appropriate mains socket and turn the unit on.
3
Loudspeaker terminals
Connect the wires from your left channel loudspeaker to the Left positive
and negative terminals, and the wires from the right channel loudspeaker
to the Right positive and negative terminals. In each case, the red terminal
is the positive output and the black terminal is the negative output.
Front panel controls
Volume
AM1
Integrated Amplifier
CD
BD / DVD
Balance
Tuner / DAB
On /Off
MP3 / Aux
1
3
4
5
Volume
AM5
Integrated Amplifier
CD
BD / DVD
Bass
Treble
Balance
Tuner / DAB
MP3 / Aux
On / Off
MP3 In
1
2
3
4
5
6
1
4
On/Off
Balance
Switches the unit on and off.
This control allows you to adjust the relative output levels of the left and
right channels. In the central position the output from each channel is
equal. This control only modifies the sound through your loudspeakers –
it does not affect the signals sent through the Rec Out connections.
2
Bass and Treble (AM5 only)
These controls allow subtle adjustments to the tonal balance of the
sound. In the central position these controls have no effect. They only
modify the sound through your loudspeakers, and do not affect the signals
sent through the Rec Out connections. If the musical recording is of poor
quality or other factors are affecting the sound quality, it may be
necessary to adjust the tone controls to compensate.
5
Source selector switch
(BD/DVD, CD, Tuner/DAB, MP3/Aux)
Select the appropriate input source component that you wish to listen to.
The signal selected is also fed to the Rec Out sockets so that it may be
recorded. The input should not be changed whilst recording.
3
Volume
Use to increase or decrease the level of the sound from the outputs of the
amplifier. This control affects the level of the loudspeaker output, it does
not affect the Rec Out connections. It is advisable to turn the Volume
control fully anti-clockwise before switching the amplifier on.
6
MP3 Input (AM5 only)
This source allows you to connect a portable audio device such as an MP3
player directly into the front of the unit using a 3.5mm stereo-jack. Once
plugged in, this input is selected when the source selector switch is set to
‘MP3/Aux’.
Note: If the MP3/Aux input on the rear panel is required, remove the jack
from the front of the unit to enable the MP3/Aux input.
5
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Connections
Loudspeakers
Check the impedance of your speakers. You can use types with an
impedance of between 4 and 8 Ohms.
The red coloured speaker terminals are positive (+) and the black speaker
terminals are negative (-). Make sure correct polarity is maintained at
each speaker connector or the sound can become weak and “phasey”
with little bass.
Note: All connections are made using standard loudspeaker cable.
The diagram below shows the basic connection of your amplifier to a CD
player and a pair of loudspeakers.
Using bare wire connections
Prepare the speaker cords for connection by stripping off approximately
10mm (3/8”) or less of the outer insulation. More than 10mm could
cause a short circuit. Twist the wires tightly together so there are no loose
ends. Unscrew the speaker terminal, insert the speaker cable, tighten
the terminal and secure the cable.
Right
speaker
Left
speaker
Black
Red
Black
Red
Black
Red
Red
Black
Topaz AM1/AM5
CD player
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AM1
AM5
Technical specifications
Troubleshooting
AM1
Power output
There is no power
Ensure the AC power cord is connected securely.
20 watts (into 8Ω)
THD (unweighted)
<0.02% @ 1kHz, 80% of rated power
<0.15% 20Hz – 20kHz, 80% of rated power
<0.1% 20Hz – 20kHz @ 10W
Ensure the plug is fully inserted into the wall socket and is switched on.
Check fuse in the mains plug or adaptor.
Check the power button is on at the front of the unit.
Frequency response (-3dB)
S/N ratio (ref 1W)
10Hz - 30kHz
>82dB (unweighted)
32k ohms
>100
There is no sound
Check the correct input is selected.
Input impedances
Power Amp damping factor
Max. power consumption
Dimensions
Check that the speakers are connected correctly.
150W
The sound is distorted
Check speaker connections.
80 x 430 x 340mm
(3.1 x 16.9 x 13.4”)
Weight
5.1kg (11.2lbs)
There is a hum coming from the speaker
Ensure that all cable connections are secure.
AM5
There is unwanted background noise and interference
Power output
25 watts (into 8Ω)
Move the unit away from other electrical equipment that is likely to cause
interference.
THD (unweighted)
<0.015% @ 1kHz, 80% of rated power
<0.15% 20Hz – 20kHz, 80% of rated power
<0.1% 20Hz – 20kHz @ 10W
Ensure that all cable connections are secure.
Frequency response (-3dB)
S/N ratio (ref 1W)
10Hz - 30kHz
>82dB (unweighted)
32k ohms
>100
In the event that the above solutions do not remedy your problem, please
consult our frequently asked questions (FAQ) section on our website:
Input impedances
For all servicing, in or out of warranty, please contact your dealer.
Power Amp damping factor
Max. power consumption
Bass/Treble controls
180W
Shelving, ultimate boost/cut
+/- 5.5dB @ 20Hz and 20kHz
Dimensions
Weight
80 x 430 x 340mm
(3.1x 16.9 x 13.4”)
5.1kg (11.2lbs)
7
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Cambridge Audio is a brand of Audio Partnership Plc
Registered Office: Gallery Court, Hankey Place,
London, SE1 4BB, United Kingdom
Registered in England No. 2953313
© 2009 Cambridge Audio Ltd
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