Cambridge SoundWorks Speaker user manual About Amplifier Power, Protection Circuit

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OUTDOOR 42/52/62 manual 6/4/02 11:21 AM Page 9

ABOUT AMPLIFIER POWER

The amount of amplifier power needed to drive the loudspeakers varies significantly with such factors as the size of the listening area, the type of music you listen to, and most importantly, how loud you like to play it.

The Outdoor loudspeakers can safely be used with the most powerful amplifiers and receivers designed for home listening, as long as these components are used within reasonable limits. However, the distortion caused by overdriving either the speaker or associat- ed equipment can cause damage, even if the amplifi- er or receivers power is technically within the capabili- ties of the speaker.

If, at a given volume level the sound becomes “grainy” or exhibits other audible distortion you may be over- driving the amplifier or receiver. This type of distortion is potentially damaging to tweeters, even from a low powered amplifier. Reduce the setting of the volume control until these symptoms disappear. If this is not sufficiently loud for your needs, you may require a more powerful amplifier and/or larger loudspeakers. Contact the retailer where you purchased your loud- speakers, or a Cambridge SoundWorks audio expert for advice on how to best satisfy your needs.

Also, keep the volume turned down when connecting or disconnecting components in order to prevent dam- age from strong, non-musical transients. This will help protect your ears as well as the speakers.

Protection Circuit

The Outdoor loudspeakers each incorporate a solid- state tweeter protection circuit to reduce the chance of permanent damage as the result of short-term overpowering. When activated, this circuit will cut the signal to the tweeter, and the speaker may sound dull. When this occurs, it is an indication that the signal is too loud and has exceeded the capacity of either the speaker or the amplifier. Simply reduce the volume to a safe level and the tweeter output will return within a few seconds.

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Cambridge SoundWorks Speaker user manual About Amplifier Power, Protection Circuit