KEF Reference 208 Bruksanvisning

KEF Subwoofer Reference 208

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OWNERS MANUAL
Model 201/2 Model 202/2c Model 203/2 Model 204/2c Model 205/2 Model 206/2ds Model 207/2
Thank you for purchasing KEF Reference Series
loudspeakers. These have been designed to
faithfully reproduce high quality sound over many
years of use and should provide realistic
reproduction of music and speech. Please take a
little time to read these instructions prior to use.
Your KEF Reference Loudspeakers are tall,
slim and extremely heavy. Installed correctly on
a smooth, level surface, your loudspeakers
should be entirely safe to listen to and to
live with.
However, if you have small children, large pets,
the infirm, uneven flooring or unusually thick
carpeting in your home, then correct adjustment
of the foot assemblies is imperative, if safe,
stable operation is to be achieved.
Warning: The metal tweeter dome now has
protective mesh at the centre of the Uni-Q®
driver array; if however this is compromised and
the dome itself is dented, it will permanently
impair performance.
1. Avoid temperature extremes.
2. Avoid damp.
3. Avoid direct sunlight.
4. Clean with the KEF cloth provided.
5. Do not use spirit based cleaners.
If you are at all uncertain about setting up, operating or caring for your system
your dealer will be pleased to assist you.
1. Read this manual carefully, especially the
safety information, before attempting to
assemble and operate the system.
2. Follow the unpacking and assembly
instructions on the cartons. Please note that
lifting the heavier Model 207/2 and Model
204/2c requires two able-bodied persons.
3. Never connect the system directly to the
electricity supply.
4. Trailing cables are dangerous. Ensure all
cables are secure and tidy.
5. When stripping cables use only tools
designed specifically for the purpose ie:
correct wire cutters or cable strippers.
Do not attempt to strip cables with a knife as
this could result in serious injury.
Important Safety Information
General Care of your System
1Part No.: 290201E
Issue 2: January 2007
2 3
Important Safety Information 1
General Care of Your System 1
Contents 3
Introduction 5
Overview of Common Features 6
Model 207/2 7
Model 205/2 7
Model 203/2 7
Model 201/2 8
Model 206/2ds 8
Model 202/2c 8
Model 204/2c 8
Installation and Operation 9
Unpacking, Handling and Aftercare 9
Adjusting the Feet and/or Spikes 10
Loudspeaker Placement and Room Acoustics 11
Loudspeaker Positioning 12
Amplifier to Loudspeaker Connections 14
Amplifier Requirements and Power Handling 14
Uni Balance Adjustment Models 201/2, 203/2, 205/2, 207/2, 206/2ds 15
Placement Adjustment Models 202/2c, 204/2c 17
Single, Bi and Tri-wire Connections 18
Loudspeaker Cables 23
Grilles 23
Warranty 23
Service Information 23
Specifications 24
KEF Heritage 29
Wrong
Adjustment
Caution/Warning
Positive/RED
Negative/BLACK
Switch off appliance
Option
Correct
Contents
5
Since its formation in 1961, KEF has pioneered
many innovations in loudspeaker technology and
design. Your new Reference Series loudspeakers
contain one of the latest of these advances -
the KEF ‘Project Austin’ Uni-Q driver array.
In this innovative KEF design, not only are the
mid and high-frequency drivers on the same axis
(co-axial), but their acoustic centres are also on
the same plane (co-planar). The profile of the
mid-frequency driver’s cone modifies the
directivity factor (or ‘Q’) of the high frequency
unit such that both drive units have the same
directivity in the critical crossover region,
where they are operating at similar frequencies.
This unification of the ‘Q’ of the drive units lies
behind the name “Uni-Q”.
Now incorporated in many KEF loudspeakers,
the Uni-Q driver array yields immediate and
readily audible sonic benefits. With no sharp
discontinuity in ‘Q’ at the crossover frequency,
correct tonal balance is not confined to a
single ‘sweet spot’ in the listening room and
is extended to cover a far broader area.
With sound arriving in phase, the sound source
is brought into the sharpest possible focus.
With properly recorded material and as part of
a good quality system, well set-up, loudspeakers
with KEF Uni-Q can reveal the location of each
musical voice in the stereo image with pin-point
accuracy and with a much smoother response
being maintained off-axis - where most people
listen - than before.
The latest Uni-Q array implemented in this
range is a sophisticated device offering a
combination of wider bandwidth and wider
dispersion than its predecessor.
Both the midrange and high frequency drivers
have been symbiotically designed to take us one
step closer to the ideal of a controlled directivity
point source acoustic radiating system.
The 165mm (6.5in.) midrange section has a
shallow ‘Uni-Form’ cone profile which gives
excellent midrange performance but also
provides the optimum waveguide for the
coincidentally mounted tweeter.
This new two piece 25mm (1in.) titanium dome
tweeter has been developed utilising Finite
Elements Analysis techniques to provide
‘pistonic’ motion to a much higher frequency,
eliminating the need for a separate
hyper-tweeter.
It also features a vented pole piece,
increasing the air space behind the dome
providing an extended but smooth high
frequency performance whilst retaining ultra
wide bandwidth source compatibility:
DVD-A/SACD.
Introduction

Produktspecifikationer

Varumärke: KEF
Kategori: Subwoofer
Modell: Reference 208

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