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Fine Tuning Your Acoustimass

Using your speaker system to its best advantage

Automatic System Protection

Receiver/amplifier considerations

5 Series III Speaker System

Your speaker system requires very little attention when set up and connected properly.

However, observing the following guidelines will help maximize your enjoyment.

Room Acoustics

The acoustics (sound properties) of your listening room can affect the overall sound quality of

any speaker system. The following tips will give you some control over the sound:

A. Rooms with a lot of sound-absorbing furnishings, such as stuffed furniture, wall-to-wall

carpet, or heavy drapes, may reduce the treble sound (high frequencies). The missing

treble sound can be restored by slightly turning up the treble control on your receiver or

amplifier. If convenient, you may remove some of the sound-absorbing material.

B. Rooms with too few sound absorbing furnishings, especially those with bare floors and

walls, may sound overly shrill or "bright" because of too much treble. Turning down the

treble control or adding sound absorbers such as throw carpets or drapes will usually

improve the sound.

C. If your system seems to have too much or too little bass (low frequencies), you can adjust

the bass control on your receiver or amplifier. You may also move the Acoustimass

module closer to a wall and/or corner to increase bass. Doing the opposite will decrease

bass.

D. In general, many problems with acoustics can be solved by the judicious use of your tone

controls. Remember, though, that the use of these controls (especially when turned all the

way up) may put greater power demands on your receiver or amplifier. Excessive tone

adjustment can cause an amplifier or receiver to run out of power and distort, potentially

damaging your system.

E. External signal processors (such as graphic and parametric equalizers), while not recom-

mended, can be used with your Acoustimass 5 Series III speaker system if a greater

degree of acoustic control is desired. Consult your Bose

Note: The Acoustimass 5 Series III speaker system incorporates an automatic protection

circuit, which guards against most kinds of damage from electrical stress or overload. This

circuit activates at high volume levels to reduce output, causing a slight decrease in volume.

This is normal operation and indicates that power input may be exceeding safe levels.

Sustained listening at these levels is not recommended.

Note: Your speakers incorporate heavy-duty driver elements designed to resist many types

of electrical stress. However, any speaker can be damaged if the amplifier driving it fails.

Increasing the volume until the music sounds distorted also causes speaker damage. This

can happen even with a low-powered receiver or amplifier.

Your speaker system is designed for use with receivers or amplifiers rated from 10 to 200

watts per channel with 4 to 8 ohm impedance. For further information, refer to your receiver

or amplifier owner's guide.

October 23, 2001

dealer for advice.

AM196451_05_V.pdf