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loudspeakers
Notes on making speaker
connections
< Do not make any connections to any amplier
while it is switched on. We recommend that
your amplier is completely disconnected from
the mains supply before starting.
< Before switching your amplier(s) on for the
rst time aer connecting to speakers, please
check all connections thoroughly. Ensure that
bare wires or cables are not touching each other
or the amplier’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 amplier and the speaker.
< Aer making connections: switch the
amplier(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-amping,
please contact your Arcam dealer who will be
happy to help you.
Single wiring
Single wiring is the conventional wiring method of
running a single cable per channel between the amplier
and the speaker; this is the easiest technique.
If each speaker has more than one pair of connecting
terminals, use the terminals labelled
LF or ‘Low
Frequency’ for each speaker.
Connect the positive terminal of the right speaker
connection on the amplier (coloured red and labelled
+R) to the positive terminal of your right speaker.
Bi-amping
Bi-amping is the separation of the amplication of low-
and high-frequency signals over two ampliers.
Bi-amping requires the use of two ampliers per
channel. Normally, your A18 is used to drive the high-
frequency (treble) speakers, with a P38 used for the
lower (bass) frequencies.
Connect your A18 to the speakers as described for
single wiring, with the exception that the A18 should
be connected to the speaker terminals labelled
HF or
‘High Frequency’. en connect the power amplier
(an Arcam P38 for example) to the LF or ‘Low
Frequency’ terminals, as in the diagram. A pair of audio
interconnect cables are also required to connect the
pre-amp outputs of the A18 to the power amp inputs of
the P38.
An A18 connected to speakers using single wiring


An A18 and P38 connected to speakers using bi‑amping




Similarly, connect the negative terminal of the amplier
(coloured black and labelled with R) to the negative
terminal of your speaker. Repeat the process for the le
speaker, using the amplier terminals labelled +L and L.
If your speakers support bi-wiring, then there is a strip
of conductive metal on the speakers connecting the low-
frequency terminals to those for the higher-frequencies;
this MUST NOT BE REMOVED in a single-wired
system.
Note that the strip of metal on the speakers connecting
the lower terminals to the upper terminals MUST BE
REMOVED. Failure to do so will result in damage to
both ampliers, which will not normally be covered
under warranty.
8


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