U Loudspeaker
Instruction
Manual
English
l
units
in your
loudspeakers
are
‘Direct Coupled’
to unusually
moving air piston. Overall enclosure
loading
and reex
systems
substantial
baffle
boards
which
in turn are
made of special
have been carefully optimised
to assist in
such accelerations
and
materials.
recovery of the moving parts.
FREQUENCY
RESPONSE
- the
characteristic
amplitude
DISPERSION
- the ability of the system
to reproduce
sound
response
in the audio
frequency
band.
accurately
and smoothly off axis,
both in horizontal
and
MISSION loudspeakers
incorporate
the company's
exclusive
and
l/emcalpla”es'
high technology
drive
units
to ensure
accurate
and
balanced
Stereo and high fidelity
are so
closely associated
that
the
two
reproduction
of all
forms
of musical
programme.
Extensive
terms now
seem interchangeable
and with
good
reason.
anechoic
research
has
resulted
in careful
optimisation
of drive Unfortunately, the majority of hi-fi systems
tend
to produce
a two-
units
and
their
interaction.
The
inherent
qualities
of the
MISSION dimensional sound stage. Those which
do not restrict
the
stage to
drivers have
further
resulted
in the
use of
elegant
and ‘natural’
roll- a wall of sound may produce other aberrations
such as
a tiny
offs
and
crossover
network
designs
-
avoiding
the
pitfalls of grand piano or an abnormally large
flute. Again,
the
stage
complex
filters with
the resultant
phase
shifts, power
impedance
perspectives could be distorted and so
on. The human
perceptual
problems
and loss
of information.
mechanism
finds it tiring to decipher the
necessary
information
to
Essential
to the
accurate
reproduction
of
music is
the system's
reconslmclllle
orlglnallh'ee'd'me"S'°“al
s°“"d stage"
ability
to retrieve
maximum
information
from
disc, tape
or tuner. It is, therefore, essential for hi-fi systems
to recreate
a solid three-
Please
note,
however,
that
such extraction
of information
must not dimensional sound stage with correct
size and
position
of
be at
the expense
of
frequency
balance,
otherwise
prominence
will
instruments in
space, with little dri, and
accurate
perspective.
be
given to
certain instruments
to the detriment
of other
musical
Your MISSION loudspeakers
will
achieve such
results,
subject
to
notes.
Loudspeakers
with defective
frequency balance
may
sound
correct positioning and
the quality of
your ancillary
equipment.
impressive for
a short
period
but will
prove unsatisfactory
for
serious
reproduction
of music.
IMPEDANCE - the load
characteristics
of
a loudspeaker
as
presented to the amplifier.
TRANSIENT
RESPONSE
- a system's
ability
to reproduce
and
control
the
speed
and attack
of the
music.
Critical to the successful
interface
between
loudspeakers
and
Music consists
of irregular
transient
impulses.
The
loudspeaker
is
f‘_‘g'rF:'eiL
Eeglezsgalutfe
Of
the
Iguziipeakeés
corénplex
imdpedani
called upon
to respond
instantaneously
to sudden
changes
of
not dro beiow
crri§['iCg|"3|nSu[e
Aihe
°u spfa ertiwmpehance
hl
electrical
energy.
The secret
is one
of dealing
with the
leading
an I
g) h
h
eve 3-
e
Same
lme.'. .9
P 359 S '
ed
e of th
transient
attack but
erha
s even more
im ortantl
of
9 9
‘W9
Wit
9
frequency
band
must_be
minimised
and kept
9
e
p
p
p
Y’ at a realistic
level Louds eaker loads will
othenivise
rove too
terminating
the signal
when
the transient
has stopped
(no
-
'
..p
. .
p.
.
reactive for most amplifiers,
resulting in the
latter going
into
overhang)
The lallel
proves
llle more complex
of the
two
remature cli in The im edance cun/es
of all
MISSION
'
-
-
- P
pp
9- P
do
the moving mass.
At the
same time,
powerful motor
systems
are
drop l°°
low" All 9°°d
quallty
ampllllers llncludlng
many
employed
to give
both positive
and negative
accelerations
to the
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