Acoustic Energy 308 Manual do utilizador

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4. Power switch

Switches the power ON and OFF.

How to use the volume, crossover and phase controls

The volume control, frequency knob and phase switch can be adjusted to match the

condition of the listening room and/or the characteristics of the left and right front speakers.

Due to the positioning of the subwoofer in the room and the associated room boundaries,

the available bass response from the existing speakers and whether or not the ltered

connection (nominally 100Hz) is used, the actual settings used on the subwoofer control

panel will vary considerably.

The Sub volume control and the crossover frequency knobs should be used together while

setting the correct bass response required. For example, raising the volume level will also

raise the e ective system crossover point, while reducing the volume has the converse e ect

of lowering the frequency range of the subwoofer. This is caused by the way the various

responses and outputs blend together in the listening environment.

Initially set the crossover frequency fairly low, e.g. 50-60Hz, and use the volume control knob

on the Sub to set the low bass level required. When the correct balance is almost achieved,

the crossover level, volume level and phase setting may be adjusted together to ne tune the

sound and achieve the cleanest, most extended and suitably powerful bass.

NOTE: An excessive input level to the subwoofer may impair the sound quality or damage

the unit. Do not increase the output of the ampli er to a high level while the low-frequency

level is enhanced by the ampli er's tone or loudness controls. If the subwoofer displays signs

of distress (e.g. an obvious "clapping" noise from an over-exerted drive unit) turn it down.

Acoustic Energy Ltd

16 Bridge Road, Cirencester

Gloucestershire GL7 1NJ

Tel +44 (0)1285 654432

Fax +44 (0)1285 654430

www.acoustic-energy.co.uk

3SERIES

308

Congratulations on choosing the Acoustic Energy 308 Sub, a powerful active subwoofer

which is capable of outstanding Hi-Fi and Home Cinema performance. Please take a few

moments to read this guide, the advice it contains will enable you to get the very best

performance out of your Acoustic Energy subwoofer.

Unpacking

Please take care when removing the 308 from it's packaging as the drive unit at the bottom

of the cabinet is not covered by a protective grille for performance reasons and can incur

damage from improper handling. Rubber feet covers are attached for use on hard ooring,

when using on carpeted ooring simply pull these o to expose spikes for improved

ground coupling.

SAFETY

Before applying power

The 308 Sub has switchable power ratings to enable it to be used globally, one to operate

from 220-240V AC line mains power and one from 110-120V AC line mains power. Please

ensure the switch (bottom right corner of rear amp panel) is in the correct position that

relates to your country's mains power before use.

NOTE: Our warranty does not cover damage caused by using the incorrect switch position

relative to local mains supply.

Power sources

The 308 should only be connected to a power supply of the type described

on its rear panel. If you are not sure consult your dealer or a quali ed electrician.

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