Kef Carlton III Brochure 2

Page 1

KEF CARLTON III

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Carlton III is a two-way floor standing
loudspeaker of medium efficiency
fitted with a passive bass radiator
which extends the low-frequency
response. The active drive units are of
very high quality construction using
special diaphragms for extremely low
colouration. It is suitable for use with
large amplifiers and will satisfy
listeners who appre ate the most
refined sound quality at realistier live
volume levels.

For over twenty ycurs KEF has
pioneered the use of moulded plastics
diaphragms in producing loudspeakers
of consistent and refined performance.
The drive units and the passive
radiator employed in Carlton 111 are
the outcome of this experience. aided
by modern research methods and
precise quality control at all stages of
production. The configuration of drive
units used in Carlton III closely
resembles that used in the KEF
Model l04aB which enjoyed world-
wide success in the seventies. setting
new standards for domestic
loudspeakcrs.

Great care has been taken in the
design of the ding network so that
the crossover region. where both high
and low-frequency lot-speakers are in
operation, does not suffer phasing
eflects which would confuse the sletco
image. Cnrltnn III will reproduce
sharply-focused. solid stereo images
with programmes of high technical
quality. Mtdrrange reproduction is
coherent and highly detailed.

Cabinet work is finished in top quality
simulated walnut laminate with brown
knitted cloth grille which is
acoustically lransparent.

but nevertheless obscures the drive
units. With the grille removed,
Carlton lIl ussumes un arresting
high-tech appearance with smart fmnt
panel graphics in a blend of brown
tan. orange and cream,

See overleaf for full technical
description and data

DIGITAL RECORDINGS
Carlton II] is perfectly suitable to
reproduce compact disc and other
types ordigital recording. with full
dynamic range.

KEF

Page 2

REC-XRLTON 111

The basic design of Carlton III
employs the latest developments in
200mm Bextrene cone drive units in
cover the essential musical range up to
3kHz. KEF pioneered the use of
Bextrenc diaphragms in domestic high
fidelity loudspeakers during the early
sixties and have unrivalled experience
in their manufacture and application.
When correctly damped and
terminated. Bextrene diaphragms arc
unequalled in performance.
consistency and reliability. They are
generally superior to most of the
newer materials currently in vogue
and notable for their very low
colouratiull.

An auxiliary bass radiator extends the
low-frequency range flat down to
NHL The unique KEF series 'C
bass loading technique is also
incorporated to further extend
response down to below 30Hz whilst
minimising the elfects of subsonic
signals due to records warps and other
faults.

The upper octaves are radiated by a
25mm impregnated cloth dome
tweeter with an impeccably smooth
frequency response and excellent
directional characteristics. An
important feature is the computer»
desxgned seamless" dividing network
with fourthrurdcr target functions
centred on JkHz. Acoustic output is
transfermd smoothly from the low»
frequency driver to the high-frequency
units without any audible phasing
cchcts. cum in directions well away
from the main listening axis.

Sensitivity of Carlton III is above
average at 86dB/m/W - making no
great demands on the amplifier. thri
fully diiveii with a [00W per channel
amplifier 3 nir can produce peak
sound press levels up to l06dB in
tin ordinary living room.

There are no matching problems with
Carlton II]. It: impedance
characteristic presents an easy load
for any 8 ohm amplifier. Input
connections are made to substantial
4mm binding posts that suit inost low»
loss super cables. Connection can also
be made using 4mm banana plugs.

. PRINTED IN ENGLAND

SPECIFICATION
Frequency range:

TYPE SP 3020

am: to 20kHz 1- 2,5dB at 2m '0'. reference axis
(-lOdB at 45H: and 30kHz)

within MB of response on reference axis
up to 20kHz for :i: 5" vertically
up to lOkHz for 3: 20° horizontally

Directional
characteristics:

106dB spl on programme peaks under typical listening conditions

Characteristic
sensitivity level:

86dB spl at lm on reference axis for pink noise input of 1W
Measured at Im on reference axis at mean spl of 90dB.
anechuic conditions

Second harmonic:

less than I96 from 60Hz to 20kHz

Third harmonic:

less than 1% from ISOHz to 20kHz

Mechanical reflex
Tuning frequency 28H:

44 litres
8 ohms
normal lOOW. audiophile 150W

Enclosure type:

Intemnl volume:

Nominal impedance:

Maximum amplifier
power:

(see explanatory note)
Minimum amplifier normal 10W

power:

Maximum continuous
sinusoidal input:

20V rms from ZOHL to 2.5kHz reducing to 8V rms Imm 717; ZBKHZ

Weight: 12kg (26.2ll1)__u 7 >____ V ..
Dimensions: 700(h) X 315(w) X 280(d)mm

23mmx l21fi(h)x ll(rl)in.
Arnplifier Power:

The maximum power input that can be applied safely depends on the type of programme and conditions
of use.

Normal use: programme with limited dynamic range. e.g. VHF transmissions. pie-recorded tape
cassettes, compressed pop records, etc.
Conditions of use include loud listening levels with power amplifier often driven into
clipping and tone controls or equaliscr used to significantly boost low rind high frequencies.

Audiophile reproduction of wide dynamic range recordings. e.g. direct cut discs. compact discs and
use: digital tapes.
Conditions of use include 1111' replay characteristics with only occasional overloading of
power amplifier.

wen-w an»

int :m a n

This SkPICh indicaier (he Iimr'lx nfrhe listening window, in (he
iwlrml plane. within which optimum Iona! balance and
.rrercaphonic emu: will be perceived.

KEF reserves the right to incorporate developments and amend the specifications without prior
notice. In llne with continuous research and development.

KEF products are manufactured in Distribution in the USA by:
England and distributed in the Intrntec

United Klngdom hy: PO Box 17414

KEF Electronics Ltd Dulles International Airport
Tovll Washington. DC 20041 USA
Maldnone Telephone: (703) 435 9100

Kent ME15 6Q? England
Telephone: Muldstone (0622) 672261
Telex: 96]?

Part No. PL 392 ENO