Arcam A38 Handbook - Page 8

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loudspeakers

connecting loudspeakers to the A38/P38

Single wiring

Single wiring is the conventional wiring method of

running a single cable per channel between the amplifier

and the speaker; this is the easiest technique.

bi-wiring

Bi-wiring is running two separate cables between the

amplifier and each speaker, with one cable carrying

the low-frequency information, the other the higher-

frequency signals.

Bi-wiring can improve the sound of your system because

the separation of high- and low-frequency signal

currents into different speaker cables avoids distortions

caused by the different currents interacting with one-

another within a single cable, as occurs in single-wired

systems.

The A38 and P38 are designed to allow easy bi-wiring,

but you will need to connect to loudspeakers that

provide separate terminals for the two cables. Each

speaker must have two pairs of terminals; one pair

labelled

or 'High Frequency' , the other pair labelled

or 'Low Frequency' .

bi-amping

Bi-amping is the separation of the amplification of low-

and high-frequency signals over two amplifiers.

Bi-amping requires the use of two amplifiers per

channel. Normally, your A38 is used to drive the high-

frequency (treble) speakers, with the P38 used for the

lower (bass) frequencies.

notes on making speaker

connections

Do not make any connections to any amplifier

while it is switched on. We recommend that

your amplifier is completely disconnected

from the mains supply before starting.

Before switching your amplifier(s) on for the

first time after connecting to speakers, please

check all connections thoroughly. Ensure

that bare wires or cables are not touching

each other or the amplifier's chassis (which

could cause short circuits), and that you

have connected positive (+) to positive and

negative (–) to negative. Be sure to check the

wiring for both the amplifier and the speaker.

After making connections: switch the

amplifier(s) on, select a source signal, then

gradually increase the volume to the required

listening level.

If you are unsure as to how your system

should be connected, or need advice on

bi-wiring or bi-amping, please contact your

Arcam dealer who will be happy to help you.

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