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Alpha 10P Power Amplifier
Safety Instructions - Please read before operating the equipment |
ENGLISH |
SAFETY INSTRUCTIONS |
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This product was designed and manufactured to meet strict quality and safety standards. There are, however, some installation and operation precautions which you should be particularly aware of:
1.Read Instructions - All the safety and operating instructions should be read before the appliance is operated.
2.Retain Instructions - The safety and operating instructions should be retained for future reference.
3.Heed Warnings - All warnings on the appliance and in the operating instructions should be adhered to.
4.Follow Instructions - All operating and use instructions should be followed.
5.Water and Moisture - The appliance should not be used near water - for example near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement or near a swimming pool, etc.
6.Carts and Stands - The appliance should be used only with a cart or stand that is recommended by the manufacturer.
6A. An appliance and cart combination should be moved with care. Quick stops, excessive force, and uneven surfaces may cause the appliance and cart combination to overturn.
7.Wall or Ceiling Mounting - The appliance should be mounted to a wall or ceiling only as recommended by the manufacturer.
8.Ventilation - The appliance should be situated so that its location or position does not interfere with its proper ventilation. For example, the appliance should not be situated on a bed, sofa, rug or similar surface that may block the ventilation openings or placed in a built-in installation, such as a bookcase or cabinet that may impede the flow of air through the ventilation openings.
9.Heat - The appliance should be situated away from heat sources such as radiators, heat registers, stoves or other appliances (including amplifiers) that produce heat.
10.Power Sources - The appliance should be connected to a power supply only of the type described in the operating instructions or as marked on the appliance.
11.Grounding - Precautions should be taken so that the grounding means of the appliance is not defeated.
12.Power-Cord Protection - Power supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them, paying particular attention to cords and plugs, convenience receptacles and the point where they exit from the appliance.
13.Cleaning - Unplug the unit from the mains supply before cleaning. The appliance should normally only require a wipe over with a clean, dry, lint-free cloth. If it is heavily soiindicator then a cloth slightly dampened with a water/washing up liquid solution may be used. Dry the unit afterwards with a dry cloth. We do not advise the use of furniture type cleaning sprays/polishes as this can cause white marks, which are very difficult to remove, if the unit is then wiped over with water.
14.Power Lines - An outdoor antenna/ aerial should be located away from power lines.
15.Non-use Periods - The power cord of the appliance should be unplugged from the outlet when left unused for a long period of time.
16.Object and Liquid Entry - Care should be taken so that objects do not fall and liquids are not spilindicator into the enclosure through any openings.
17.Abnormal Smell - If an abnormal smell or smoke is detected from the appliance, immediately turn the power off and unplug the unit from the wall outlet. Contact your dealer immediately.
18.Damage Requiring Service - The appliance should be serviced by qualified service personnel when:
A.The power-supply cord or the plug has been damaged or:
B.Objects have fallen, or liquid has spilindicator into the appliance or:
C.The appliance has been exposed to rain or:
D.The appliance does not appear to operate normally or exhibits a marked change in performance or:
E.The appliance has been dropped or the enclosure damaged.
19.Servicing - The user should not attempt to service the appliance beyond that described in the operating instructions.
All other servicing should be referred to qualified service personnel.
Introduction & Installation
ENGLISH
INTRODUCTION
This manual is in four sections;
A.Information relevant to both the Alpha 10 and Alpha 10P.
B.Alpha 10 integrated amplifier operating instructions.
C.Alpha 10P power amplifier operating instructions.
D.Instructions on how to bi-wire or to bi-amplify (“bi-amp”) your loudspeakers.
Circindicator numbers e.g. refer to items on the diagrams inside the flap of the front cover.
Section A
INSTALLATION
O Check that your mains supply voltage agrees with the voltage setting indicated on the rear panel of the unit.
■ If your mains supply voltage is different, consult your Arcam dealer.
MAINS SAFETY
■This product is normally supplied with a moulded mains plug already fitted to the lead. If for any reason the plug needs to be removed, it must be disposed of immediately and securely, as it is a potential shock hazard when inserted into a mains socket.
■Warning: This apparatus must be earthed.
NOTICE FOR U.K. OWNERS ONLY
■If the plug is removed then the remaining lead must be rewired as follows:
■The blue wire must be connected to the terminal which is coloured blue or marked with the letter N.
■The brown wire must be connected to the terminal which is coloured brown or marked with the letter L.
i The green and yellow wire must be connected to the terminal which is coloured green and yellow, or marked with the letter E or the safety earth symbol.
■When replacing the fuse in the supplied moulded mains plug, the integral fuse holder/cover must always be refitted. Use a 5 amp fuse.
SAFETY STANDARD
■ This product has been designed to meet the I EC 65 international electrical safety standard.
MAINS SUPPLY CONNECTIONS
Insert the lEC line socket of the mains lead fully into the O0 power inlet on the rear panel. Connect the other end to your mains supply.
NOTES ON USE
The Alpha 10 and 10P amplifiers will play music within seconds of being switched on. However the optimum sound reproduction will be achieved after the units have been powered up for a few minutes.
Note: On switch on there may be an audible hum from the transformers within the units. This is normal and should disappear within a few seconds.
CAUTION: Your Alpha 10 and Alpha 10P generate heat when in use, particularly at higher volumes. It is therefore most important never to obstruct the ventilation slots on the top and bottom of the unit as this will cause overheating.
If the temperature of the internal heatsinks rises above a safe level, then a thermal cut out inside the amplifier will operate.
The POWER INDICATOR on the front panel will turn amber and the output protection relays will temporarily remove the feed to the loudspeakers. The system will reset itself as the heatsinks cool down.
Please note that under certain conditions it may be possible for the Alpha 10 or Alpha lOP's thermal cut out to operate when playing music at very high levels.
This might for example happen when continuously playing heavily compressed rock music "flat out" into low impedance (4-6 ohm) speakers. If this happens to you, the cure is to turn the volume down slightly and ensure the amplifier is properly ventilated.
It is important to point out that when playing a heavily recorded
CD it is possible to drive the Alpha 10 at full power despite the fact that the volume is not at maximum. This is because of the high output voltage from a CD player. However the Alpha 10 also has to be capable of giving full power output from much lower level sources, such as tuners and cassette decks. Using these sources, the volume setting will be much higher before overload sets in.
Section B
ALPHA 10 INTEGRATED AMPLIFIER
Please refer to drawing inside front cover.
LOUDSPEAKER CONNECTIONS
■ The amplifier is fitted with BFA (British Federation of Audio) loudspeaker connectors, which are designed to meet EU safety standards.
The BFA connector will accept spade terminals, bare wires or a BFA plug. BFA plugs are available from your Arcam dealer.
The speaker terminals are colour coded red for positive and black for negative. These terminals are also labelled 'R' for the right channel speakers and 'L' for the left channel speakers.
Connect terminals © to your right speaker and terminals 0 to your left speaker, ensuring correct polarity.
Connect the red cable termination to the red terminal and the other cable termination to the black terminal. If your speaker cable has bare ends, the positive conductor can usually be identified by a ridge or coloured marking.
Ensure that no stray strands are allowed to touch another cable or the amplifier's casing. This can cause a short circuit and damage your amplifier!
®o To drive a second pair of speakers, connect terminals ® to the right speaker and terminals O to the left speaker, ensuring correct polarity.
The Alpha 10 can drive two pairs of loudspeakers, simultaneously if required, providing both pairs are rated between 8 and 16 ohms. Either pair can be selected using the switches labelled SP1 and SP2 on the front panel. To avoid overheating, the combined load impedance as seen by the amplifier should not fall below 4 ohms per channel.
CONNECTING YOUR SOURCE COMPONENTS
■ Using a suitable pair of interconnect cables, insert the red phono plugs into the sockets labelled 'R' and the other phono plugs into the sockets labelled 'L'.
All the line inputs (not PHONO) have the same sensitivity and may be used with equipment other than that labelled, if you need to do so.
PROCESSOR/TAPE 1 RECORD OUT - Connect this output to the input sockets of your tape deck (RECORD) or the tape or line input sockets of your AV processor.
0^ PROCESSOR/TAPE 1 PLAY IN - Connect this input to the output sockets of your tape deck (PLAY) or the tape or line output sockets of your AV processor.
VCR/TAPE 2 RECORD OUT - Connect this output to the input sockets of your tape deck (RECORD).
VCR/TAPE 2 PLAY IN - Connect this input to the output sockets of your tape deck (PLAY).
DVD - Connect this input to the audio outputs of a DVD player.
0A/V - Connect this input to the audio outputs of an
Audio-Visual product such as a VCR, Laserdisc player or Nicam tuner.
TUNER - Connect this input to the audio outputs of your radio tuner.
0CD - Connect this input to the audio outputs of your CD player or DAC (digital to analogue convertor).
AUX - Connect this input to the audio outputs of any unit with a line level output, eg. tape deck, tuner etc.
Please note: The AUX inputs must not be used if the phono module is fitted. When the phono module is fitted
AUX becomes an output carrying the equalised phono signal at line level.
PHONO OPTION - Please note: The phono inputs are on a separate plug-in module which your Arcam dealer or distributor can supply and fit.
ENGLISH
This module is compatible with most high output moving coil and moving magnet cartridges (MM) and low output moving coil cartridges (MC).
MM or MC is selected via an internal switch. Your cartridge type should be specified when the module is fitted.
0 MM - For connecting a turntable fitted with a high output moving coil or a moving magnet (MM) cartridge.
MC - For connecting a turntable fitted with a low output moving coil (MC) cartridge.
GROUND TERMINAL - For connecting your turntable's earth lead (if fitted).
OPERATION OF THE ALPHA 10 INTEGRATED AMPLIFIER
©REMOTE CONNECTION - These connections are for use in multi-room installations. In normal use there is no need to make any connections to these sockets. If you are biamping with an Alpha 10P see section Alpha 10/1 OP Remote Switching for details of how to power both units on/off simultaneously.
©GAIN - This switch allows you to change the sensitivity of the amplifier to match the gain when biamping to external power amp. The normal position is suitable for use when biamping with Arcam power amplifiers such as the Alpha 9P or 10P. The low gain position is suitable for certain specialist home theatre systems.
BLANKING PLATE FOR OPTIONAL FUTURE
MODULES.
MODE/ZONE - «^CONFIRM - These buttons are only for use with optional modules. They have no function on
their own in normal use of the basic Alpha 10 although
MODE/ZONE 0 can be used to select processor mode (see 0).
RECORD SELECTOR - This allows you to change the input that you wish to record from, from that selected by the INPUT SELECTORS. Alternatively this switch can also be used as a simple ‘second zone’ selector, routing a chosen source signal at line level to a second amplifier operating in another room in the house. The default setting is the input you are currently listening to ("SOURCE"). To select a different input to record from first press RECORD. The display will first show
“RECORD SOURCE”. To change the record input press the desired input button within a few seconds.
The display will indicate the selected recording option for a few seconds and then revert back to showing the volume bar graph.
The selected input will be sent to both the VCR/TAPE 2 and PROCESSOR/TAPE 1 record out sockets, unless you are using the TAPE 1 sockets in processor mode where it is sent to VCR/TAPE 2 only.
CONTROL - This button cycles through the functions that can be controlled by the rotary control 0. This can be either volume (the default setting) or balance, unless an optional module is fitted, in which case the options are determined by that module.
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