Arcam A75, A65 Installation P75 power amplifier, Using the power amplifier, Loudspeaker connections

Installation: P75 power amplifier

The P75 power amplifier can be used in conjunction with the A65 and A75 integrated amplifiers (or other Arcam amplifiers) 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-amplifier such as the Arcam 9C or an AV processor or amplifier with PRE-AMP OUT sockets.

Utilising one P75 power amplifier per loudspeaker will enable you to bi-amplify bi-wireable loudspeakers. This is particularly beneficial for top quality stereo installations with a separate pre- amplifier, or for the left, centre and right channel loudspeakers in a five speaker Dolby Pro Logic™ or Dolby Digital™ system.

Contact your Arcam dealer for more detailed information.

Loudspeaker connections

Connect up following the instructions for installing the A65 and A75 integrated amplifiers (see page 4).

Connecting to other equipment

PWR AMP IN 5

Connect these sockets to your preamplifier output sockets. Alternatively, if you are using an integrated amplifier (as your pre-amp) such as the A65, A75 or Alpha series amplifiers, connect the PWR AMP IN sockets to the PRE AMP OUT sockets on those amplifiers.

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.

DAISY CHAIN

The P75 is capable of driving further P75 amplifiers (or any other power amplifier), to drive more speakers (e.g. those in other rooms or tri-amplified speakers etc). Connect the extra power amplifier 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 amplifiers (page 4).

CIM MODULE 7

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 amplifier independently and also to switch the power amplifier 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 fitted into a power amplifier, the front panel power switch is disabled.

See your Arcam dealer for further information.

Using the power amplifier

SP1 DIRECT terminals 3

Are switched off when a headphone jack plug is inserted in the headphone socket bk on the front of the amplifier or, by pressing the MUTE button ( ) on the remote control handset.

SP2 9

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 8Ω and 2kΩ fitted with a 6.3mm stereo jack plug. If your headphones are fitted with a different plug contact your dealer for a suitable adaptor.

Inserting a headphone jack plug automatically mutes (i.e. cuts off) the loudspeakers.

A65/A75/P75

POWER bl￿

Switches the amplifier 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 amplifier output overload. Switch the amplifier off and wait for 2–3 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.

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