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9
Bi-amping
Bi-amping is the separation of the amplication of low- and high-
frequency signals over two ampliers. 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 HF For ‘High
Frequency’, the other pair labelled LF or ‘Low Frequency’.
If your speakers support bi-amping, then there will be a strip
of conductive metal or a wire on the speakers connecting the
low-frequency terminals to those for the higher-frequencies.
is connection MUST BE REMOVED in a bi-wired system.
Failure to remove this connection is likely to cause damage
to the amplier when used in bi-amping conguration. is
damage is not covered by warranty.
Bi-amping requires the use of two zones for every pair of speakers. Zone
1 of the amplier can easily be bi-amplied. Connect the Zone 1 speaker
terminals to the low-frequency loudspeaker terminals. Connect a second
zone to the high-frequency speaker terminals and set the input switch
for this zone to the Z1 position. For best performance, use Zone 3. Zone
1 and Zone 3 have completely independent power supplies, including
transformers, making this arrangement equivalent to using two separate
amplier components.
Further zones can be bi-amplied by using splitter cables to feed
two zone inputs from one source. Contact your dealer for further
information.
Notes on making speaker connections
• D        
   . 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ers 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-wiring or bi-amping, please contact your Arcam
dealer who will be happy to help you.
L
R
AUDIO IN
Z1 Z2
L
R
AUDIO IN
Z5
Z6
Z1
_
_
+ +
R L
Z2
_ _
+ +
R L
L
R
AUDIO IN
Z3
Z4
Source
Z1 Z3
Z3
INPUT
Z5
_ _
+ +
R L
Z6
_ _
+ +
R L
Z3
_ _
+ +
R L
Z4
_ _
+ +
R L
Zone 1 of an MZ12 amplifier connected to speakers using bi-amping, by means of Zone 3
Right
speaker
terminals
Left speaker
terminals
9


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