Celestion Impact 10 15 20 25 30 35 40 Owners Manual

Page 2

INTRODUCTIUN

Since 1924 Celestion has been associated with technical innovation
coupled wrth design and manufacturing excellence.

Sophisticated and dynamic. the Impact series has been developed using
the wealth of design and manufacturing experience that has made
Celestion the most respected name in music, The worlds most famous
musicians use Celestion on stage and in the studio. while in the home.
Celestion speakers have long been acclaimed for their accurate sound
reproduction.

Traditional skills are carefully maintained but are now harnessed to the
precision of new technology A unique laser interferometry measuring
system enables our research engineers to develop transducers whose
behawour can be precisely controlled The result is carefully integrated
loudspeaker systems which ensure outstanding performance and lifelong
reliability for your listening pleasure.

Please read the following notes before beginning to listen.

Unpacking

Your loudspeakers have been designed to a very high standard of
performance and finish. To remove the grille, grasp the outer edges of
the grille and apply firm pressure against the cabinet to effect easy
removal.

Please avoid touching the cone of the bass unit or the tweeter as they
are very delicate and easily damaged.

Boom Positioning

Your Celestion loudspeakers have been designed to be placed close to the
rear wall, either on bookshelves, on stands. or placed on the flock Bass
reinforcement resulting from shelf placement has been taken into account
in the design. A good overall balance will be attained by placing the
speaker in a more open surrounding. whilst remaining close to the rear
wall. Take care not to have other objects in the room too close to the
loudspeakers.

Certain models are equipped with spiked feet. The spikes are designed
to achieve a firm and level foundation and will penetrate normal carpets
without damage. 0n floor surfaces that can be damaged. a small coin
should be used under each of the spikes.

if.B:- Take great care when using products equipped with spiked feet,
as the spikes are sharp and could cause Injury.

Mounting the speaker on wall brackets is acceptable. but never screw to
or through the speaker cabinet when fixing in this way.

Connecting the Loudspeaker

These Celestion loudspeakers are fitted with heavyvduty binding posts
which will accept cables of most normal thicknesses or 4 mm "banana"

plugs.
2

Make sure you connect your speaker to the amplifier observing the polarity
signs. Connect plus (+red) of the amplifier to the + terminal of the speaker,
Likewise the minus (-black) of the amplifier to the - terminal of the
loudspeaker, The cable sleeve should be marked on the one core either
with a + or a continuous line or rib. Use this as the positive/plus and
connect to the +red terminal at both ends.

Care should be taken that your Impact loudspeakers' impedance is no
lower than the minimum quoted in your amplifers specifications. Please
contact your retailer if you are unsure on this matter

You should keep the cable run from the amplifier to the speaker as short
as possible and follow the principle that the thicker cable you use, the
better Try to keep the cable runs to less than 5 m and you should not
go above 10 m as performance is likely to be degraded.

A Note 0! Caution

Celestions power handling figures are based on undistorted speech and
music signals. lf audible distortion can be heard then loudspeaker damage
can occur. especially on small amplifiers.

Provided you do not overdrive your amplifier, you should not damage your
loudspeakers. It you hear distortion when you increase the volume control,
this is normally a sign of overdriving the amplifier and you should reduce
the output level slightly

Suggested Operating Procedures

This section is intended to ensure that your loudspeaker system is
protected from unintentional damage.

Amplifier - Ensure that you :

DU NOT use excessive volume which causes distorted or unpleasant/y bad
sound

00 NUT/ower. raise or clean stylus unless volume control is set to zero.
00 ENSURE that all connections are tight and are cleaned periodically -
corroded connections will seriously impair sound reproductions.

iii) NOT try to impress the neighbours with high volume - damage can
easily result!

Loudspeakers - Ensure that you :

DO NOT use your loudspeakers for reproducing either live amplified music
or computer signals or to attempt to use as PA systems.

00 not allow acoustic feedback to occur.

00 remember that the human ear adjusts to sound levels and at parties
you may be tempted to continually raise the volume to dangerous peaks!

Service

In the event of system malfunction, do remember that the loudspeaker
only reproduces the signal fed into it. Used properly. loudspeakers will
rarely fail and if both loudspeakers reproduce the same fault or distortion
then it is likely that the problem lies elsewhere in the system. In the
unlikely event of loudspeaker failure, please contact your dealer in the first
instance or, if you prefer, contact our Service Manager.

Designed and developed by Celestion International Ltd.

3