Installation: A65 and A75
Positioning the unit
Place your amplifier on a level, firm surface.
Avoid placing the unit in direct sunlight or near sources of heat or damp.
Ensure adequate ventilation. Do not place the unit in an enclosed space such as a bookcase or cabinet as both of these will impede air flow through the ventilation slots.
Connecting to loudspeakers
Your amplifier is fitted with loudspeaker terminals to BFA (British Federation of Audio) standard specification.
SP1 DIRECT terminals 3
Are switched off when a headphone jack plug is inserted in the headphone socket coon the front of the amplifier or, by pressing the MUTE button on the remote control handset.
SP2 SWITCHED terminals 4
Are switched off when a headphone jack plug is inserted in the headphone socket coon the front of the amplifier or, by pressing the MUTE button on the remote control handset.
If you want to connect speakers for occasional use (perhaps in another room), connect them to these terminals. They can be turned off easily by releasing the front panel switch cn.
BFA loudspeaker terminals
The terminal will accept spade terminals, bare wires or a BFA plug. BFA plugs are available from your Arcam dealer. To connect a bare wire or spade terminal unscrew the red (or black) part of the loudspeaker terminal first.
Insert the wire or spade terminal and screw it back up.
CAUTION: Do not over tighten the loudspeaker terminals or use a wrench, pliers, etc., as this could cause damage to the terminals which will not be covered under warranty.
Connect the right hand speaker to the terminals on the back of your amplifier marked R and the left speaker to the terminals marked L.
Connect your loudspeakers so that the red (positive/+) terminal on each loudspeaker is connected to the red (positive/+) terminal on the amplifier. Your loudspeaker cables may be marked to show polarity (negative/– and positive/+), if not, then the positive terminal can usually be identified by a ridge or coloured marking.
Now connect your loudspeakers’ black
Ensure that no stray strands of inner wires are allowed to touch another cable or the amplifier’s casing. This can cause a short circuit and damage your amplifier! Two pairs of speakers may be connected at the same time provided each pair is rated between 8 and 16Ω. If one or both pairs have an impedance of less than 8Ω, the combined load on the amplifier falls below 4Ω and could cause an overload. If so, the overload protection circuit engages and the amplifier will not work.
+ | – | Arcam A65 or A75 amplifier | – |
+ | |||
| R |
| L |
+ | – | + | – |
Right |
|
| Left |
speaker |
|
| speaker |
A65/A75/P75
Volume control settings
It is important to realise that the position of the volume control is not an accurate indication of the power delivered to your loudspeakers. The amplifier will often deliver its full power long before the volume control reaches its maximum position particularly when listening to heavily recorded compact discs. However the amplifier 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 control setting may be much higher before distortion (audible overload) sets in.
Connecting to a power supply
Wrong plug?
Check that the plug supplied with the unit fits your supply and that your mains supply voltage agrees with the voltage setting (120V or 230V) indicated on the rear panel of the unit.
If your mains supply voltage or mains plug is different, consult your Arcam dealer or Arcam Customer Support on +44 (0)1223 203203.
Mains lead
The appliance 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 the mains socket. Should you require a new mains lead, contact your Arcam dealer.
Plugging in
Push the plug (IEC line socket) of the power cable supplied with the unit into the socket ( ) in the back of the unit. Make sure
it is pushed in firmly.
Put the plug on the other end of the cable into your power supply socket and switch the socket on.
4 | Wiring your loudspeakers |