KEF C3 C3/NATU User Manual
Product codes
C3/NATU
Over four decades of
innovation and a passion for
engineering excellence has
established KEF as one of the
most respected names in
high-end audio.
innovation and a passion for
engineering excellence has
established KEF as one of the
most respected names in
high-end audio.
The ideal that inspired KEF’s founder Raymond Cooke in 1961 was to reproduce recordings so accurately
that they sounded indistinguishable from live performance, which is why so many professionals (including
the BBC) adopted his groundbreaking designs. This spirit of continual innovation in pursuit of perfection
is what has driven KEF engineers ever since. KEF speakers are like no others, and few manufacturers
have pioneered as many breakthroughs in loudspeaker design - from radical new cabinet designs,
cone materials and driver configurations to the use of aerospace technologies and advanced sonic
modelling techniques.
that they sounded indistinguishable from live performance, which is why so many professionals (including
the BBC) adopted his groundbreaking designs. This spirit of continual innovation in pursuit of perfection
is what has driven KEF engineers ever since. KEF speakers are like no others, and few manufacturers
have pioneered as many breakthroughs in loudspeaker design - from radical new cabinet designs,
cone materials and driver configurations to the use of aerospace technologies and advanced sonic
modelling techniques.
So the new C Series is the product of a multi award-winning heritage of daring design, brilliantly executed.
Today, it finds expression in revolutionary concepts like the KEF Muon (www.kef.com/products/muon),
where ultra-sophisticated driver arrays are shrouded in giant Ross Lovegrove-designed towers of
superformed aluminium. The same talented engineers created the speakers you see in these pages,
with just as much attention to detail and engineering integrity.
Today, it finds expression in revolutionary concepts like the KEF Muon (www.kef.com/products/muon),
where ultra-sophisticated driver arrays are shrouded in giant Ross Lovegrove-designed towers of
superformed aluminium. The same talented engineers created the speakers you see in these pages,
with just as much attention to detail and engineering integrity.
A
Allu
um
miin
niiu
um
m d
do
om
me
e ttw
we
ee
ette
err w
wiitth
h
‘‘tta
an
ng
ge
erriin
ne
e’’ w
wa
av
ve
eg
gu
uiid
de
e The same
19mm (0.75in.) tweeter from
the latest Q Series reproduces vocals
with spellbinding realism – the unique
‘tangerine’ waveguide disperses its sweet
natural clarity evenly throughout the room
and provides excellent protection from
straying fingers.
with spellbinding realism – the unique
‘tangerine’ waveguide disperses its sweet
natural clarity evenly throughout the room
and provides excellent protection from
straying fingers.
U
Ullttrra
a--rriig
giid
d e
en
nc
cllo
os
su
urre
es
s The sound
you hear is untainted by any
internal resonance from the sturdily
internal resonance from the sturdily
constructed cabinet, thanks to careful
internal bracing and a dense dual-layered
baffle system.
internal bracing and a dense dual-layered
baffle system.
M
Ma
ag
gn
ne
ettiic
c s
sh
hiie
elld
diin
ng
g Freedom of
positioning is virtually unrestricted
because every C Series speaker is
because every C Series speaker is
fully magnetically shielded to eliminate
any risk of interference with other
electronic devices in the room.
any risk of interference with other
electronic devices in the room.
G
Go
olld
d--p
plla
atte
ed
d tte
errm
miin
na
alls
s
The exceptional acoustic definition
you experience depends on the
you experience depends on the
recorded signal being perfectly
transmitted, so the twinned binding
posts of the C Series are gold-plated.
transmitted, so the twinned binding
posts of the C Series are gold-plated.
D
Du
ua
all s
siig
gn
na
all ttrra
an
ns
sm
miis
ss
siio
on
n
To optimise acoustic resolution,
there are dual sets of binding posts
there are dual sets of binding posts
to accommodate bi-wiring, or, for the
cleanest possible response right across
the frequency range, bi-amplification.
cleanest possible response right across
the frequency range, bi-amplification.
F
Fo
orrw
wa
arrd
d--ffiirriin
ng
g s
sllo
ott p
po
orrtt
Bass response is further extended
by a frontal slot port carefully
by a frontal slot port carefully
contoured to maximise low frequency
dispersion and minimise any unwanted
turbulence that might otherwise colour the
well-defined output of the bass drivers.
dispersion and minimise any unwanted
turbulence that might otherwise colour the
well-defined output of the bass drivers.
IIn
nv
viis
siib
blle
e k
ke
ey
yh
ho
olle
e w
wa
allll m
mo
ou
un
nttiin
ng
g
s
sy
ys
stte
em
m With no ugly brackets to
spoil the clean lines, it couldn’t be
easier to secure your C Series satellites
(upright or horizontally) to any suitable
vertical surface using the ingeniously neat
keyhole mounting point built into the back
of each cabinet.
(upright or horizontally) to any suitable
vertical surface using the ingeniously neat
keyhole mounting point built into the back
of each cabinet.
KEF HERITAGE
C SERIES TECHNOLOGY