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Unpacking
To avoid damaging the
loudspeaker when removing from
the outer case, itis important
to follow these instructions
carefully.
1. Stand the case on its bearers. Remove
the strapping, unscrew the lid and lift off.
2. Remove the three foam packing pieces from
loudspeaker sides and bottom, but leave the
packing at the top.
4. Gently ease the loudspeaker from the case
and remove plastic cover.
Electrical Connection
Connect the loudspeaker to
your amplifier by means of
either the screw terminals or
4mm plugs. The red terminal
on the loudspeaker should be
connected to the red terminal
on the amplifier, or the
connection marked positive.
Correct phasing of stereo loud-
speakers is extremely important
and incorrect connection will
produce a loss of bass and a
poor stereo image. This will be
rectified by reversing the
connections to one of the
loudspeakers.
itis good practice to keep the
connecting leads between the
power amplifier and speakers
as short as possible, and to use
a heavy gauge wire to keep the
DC resistance to a minimum.
It will be appreciated that the
input to the laudspeaker is of
complex impedance, and when
your system is operating at
high levels very high currents
will be carried by the inter-
connecting cables.
Considerable work has been
carried out in recent years on
the effect of different cables,
and there is fairly conclusive
evidence to show that, although
subtle, these differences are
apparent. We would recom-
mend, therefore, that if cable
lengths exceed 2 metres care
should be taken over their
choice, and in any event it is
good engineering practice to
employ really heavy gauge
cables of the highest quality.
Bi- and tri-amplification
In order to facilitate bi- or tri-
amplification, the inputs to each
individual filter section (low-
frequency, midrange, high-
frequency) have been brought
out to three separate terminals.
No electronic crossover is
required.
With normal operation using a
single amplifier, shorting links
are provided which parallel the
input terminals, and the ampli-
fier may therefore be
connected to any of these
terminals.
Obviously with tri-amplification
separate amplihers will be used
for each section, but the more
usual and recommended sys-
tem would be bi-amplification
where the larger of the two
amplifiers is used for the bass
section, and the smaller ampli-
fier for the midrange and treble
sections which are then con-
nected in parallel with one pair
of the shorting links provided.
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