Arcam A75 Stereo Amplifier User Manual


 
A65/A75/P75
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The P75 power ampli er can be used in conjunction with
the A65 and A75 integrated ampli ers (or other Arcam
ampli ers) to bi-amplify loudspeakers that have two pairs of
input connections (i.e. are bi-wireable). The P75 can also be
used with a pre-ampli er such as the Arcam 9C or an AV
processor or ampli er with
PRE-AMP OUT sockets.
Loudspeaker connections
Connect up following the instructions for installing the A65 and
A75 integrated ampli ers (see page 4).
Connecting to other equipment
PWR AMP IN
5
Connect these sockets to your preampli er output sockets.
Alternatively, if you are using an integrated ampli er (as your
pre-amp) such as the A65, A75 or Alpha series ampli ers,
connect the PWR AMP IN sockets to the PRE AMP OUT sockets
on those ampli ers.
MONO LINK
6
The P75 can be adapted to provide two mono loudspeaker
outputs from a single input.
Pull out the U-link
8
supplied and use it to connect the
MONO LINK sockets
6
together.
Installation: P75 power ampli er
SP1 DIRECT terminals
3
Are switched off when a headphone jack plug is inserted in
the headphone socket
bk
on the front of the ampli er or, by
pressing the MUTE button ( ) on the remote control handset.
SP2
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Push the button in to select the loudspeakers connected to
the SP2
4
speaker terminals. To disconnect the speakers,
release the switch again.
HEADPHONE socket
bk
Accepts headphones rated between 8 and 2k tted with
a 6.3mm stereo jack plug. If your headphones are tted with
a different plug contact your dealer for a suitable adaptor.
Inserting a headphone jack plug automatically mutes (i.e. cuts
off) the loudspeakers.
POWER
bl
Switches the ampli er on and off.
Power indicator
bm
This initially glows orange. After a few seconds, the colour
changes to green and a slight click may be heard as the output
muting relay disengages.
When the indicator glows orange, the speakers are
disconnected and an internal protection circuit is working.
If the indicator glows orange during normal use it may be due
to an ampli er output overload. Switch the ampli er off and wait
for 23 minutes before switching on again.
If the indicator continues to glow orange, switch the unit off,
remove all the speaker cables and switch on again. If the
indicator goes green on switching on, there is a problem
with the speakers or speaker cables. Check the speakers and
speaker cables for short circuits before reconnecting them.
If the indicator continues to glow orange with no speakers
connected, contact your Arcam dealer.
Utilising one P75 power ampli er per loudspeaker will enable
you to bi-amplify bi-wireable loudspeakers. This is particularly
bene cial for top quality stereo installations with a separate pre-
ampli er, or for the left, centre and right channel loudspeakers
in a ve speaker Dolby Pro Logic or Dolby Digital system.
Contact your Arcam dealer for more detailed information.
DAISY CHAIN
The P75 is capable of driving further P75 ampli ers (or any
other power ampli er), to drive more speakers (e.g. those in
other rooms or tri-ampli ed speakers etc). Connect the extra
power ampli er inputs to the MONO LINK outputs
6
left to
left, right to right with suitable high quality phono to phono
cables.
Connecting to a power supply
Connect up following the instructions for installing the A65 and
A75 integrated ampli ers (page 4).
CIM MODULE
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The CIM (custom install module) is an optional module that
enables you to adjust the gain of the left and right channels
of the power ampli er independently and also to switch the
power ampli er on/off remotely, with a 12 volt trigger. The CIM
module would normally be used in a multi-room set up. When
a CIM module is tted into a power ampli er, the front panel
power switch is disabled.
See your Arcam dealer for further information.
Using the power ampli er