Yamaha CW218V Manuel du propriétaire - Page 3

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This product, when used in combination

with ampliﬁcation and/or additional loud-

speakers, may be capable of producing

sound levels that could cause permanent

hearing loss.

DO NOT operate at high volume levels or at

a level that is uncomfortable. If you experi-

ence any discomfort or ringing in the ears, or

suspect an hearing loss, you should consult

an audiologist.

To protect your speakers

When choosing a power ampliﬁer to use with your speakers,

make sure that its power output matches the speakers' power

capacity (refer to the Speciﬁcations on page 7). Even if the

ampliﬁer's power output is lower than the speakers' PGM

(program) power capacity, the speakers may be damaged

when clipping of a high input signal occurs.

The following may cause damage to speakers:

• Feedback caused when using a microphone.

• Continuous high sound pressure level produced by elec-

tronic instruments.

• Continuous high-power output distorted signals.

• Popping noises caused by turning on equipment, or by

connecting or disconnecting system components while the

ampliﬁer is turned on.

Poly Switch

All full-range loudspeakers are ﬁtted with a self-resetting

poly switch that protects the high-frequency driver from

damage caused by excessive power.

If a loudspeaker cabinet loses high-frequency output, imme-

diately remove power from the unit and wait for two to three

minutes. They should allow the poly switch to reset. Re-

apply power and check the performance of the high-fre-

quency driver before continuing with the power reduced to a

level that does not cause the poly switch to interrupt the sig-

nal.

On the CW115V/CW118V/CW218V subwoofer, the Poly

Switch protects the woofer and a similar routine should be

followed if its output is lost.

• In any system using two or more speakers, be sure to match

the connection polarities of all speakers to the ampliﬁer(s) –

e.g. always connect "+" to "+" and "-" to "-". If the polarities

are not properly matched the speakers will be driven out of

phase and the sound will suffer.

• Use only Neutrik NL4FC plugs for connecting Speakon con-

nectors.

Yamaha cannot be held responsible for damage caused by

improper use or modiﬁcations to the device.

* Illustrations in this manual are for explanatory purposes

only, and may not match the actual appearance of the prod-

uct during operation.

* Company names and product names used in this Owner's

Manual are trademarks or registered trademarks of their

respective owners.