Altec Lansing ACS21W Speaker System User Manual

User Guide

Altec Lansing

Computer Speaker System



Welcome to the extraordinary world of Altec Lansing Multimedia high fidelity sound.

The patented Altec Lansing Multimedia Computer Speaker System provides the best computer audio possible. You can plug these computer speaker systems into a

PC audio card and vastly enhance any business presentation, training, education or advertising, music or video production with the same level or audio quality you are used to hearing from a music CD. These speaker systems can also be used with any multimedia home computer, CD player or video interactive game to provide a total intelligent audio solution which is practical and affordable.


The ACS22 consists of two amplified speakers especially designed for multimedia computer near field monitoring. The speakers are magnetically shielded so that they can be placed close to a computer monitor without distorting images. Best stereo affect is obtained when the speakers are placed as far apart as the speaker cord set allows.

When the ACS22 is not used with a computer, it can serve as an amplified speaker system for CD or Cassette players and various video/audio sources with excellent results.

USE OF CONTROLS (see figure 1)

Power On/Off

Press the POWER switch to turn the unit on. A green indicator will glow to indicate power is on. Press the POWER switch again to turn the unit off.

Volume Control

Turn the volume control clockwise to increase volume and counter-clockwise to decrease volume.

Headphone Jack

To listen privately, it is sometimes necessary to use headphones. Once the headphone plug is inserted into the headphone jack, the speakers are automatically disconnected.

NOTE: The headphones are not included with the unit.

Front View of Satellite Speakers

CONNECTIONS (see figure 2)

The only connection required is to insert the audio input plug into the computer audio output. After this connection is made insert the power plug into an AC outlet. The unit is now ready to operate.

To the computer audio output


Drivers (satellites)

Two 3 inch magnetically shielded full range

Frequency Response

110Hz 18 kHz

Satellite Power

2.5 Watts per Satellite (5 watts total)

Input Impedance

Power Requirements

USA/Canada Model

117 Volts 60Hz

European/United Kingdom

230 Volts 50Hz

Japanese Model

100 Volts 50/60Hz

Max Power Consumption

UL/CUL/CE Approved

Rear View of Satellite Speakers

The lightning flash with arrowhead, within an equilateral triangle, is intended to alert the user to the presence of uninsulated dangerous voltage within the products enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.




The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance.


Read Instructions All the safety and operating instructions should be read before the appliance is operated.

Retain Instructions The operating instructions should be retained for future reference.

Heed Warning All warnings on the appliance and in the operating instructions should be adhered to.

Follow Instructions All operating and use instructions should be followed.

Water and Moisture The appliance should not be used near water for example, near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement, or near a swimming pool, etc.

Outdoor Use Warning: To reduce the risk of fire or electric shock, do not expose this appliance to rain or moisture.

Location The appliance should be installed in a stable location.

Ventilation The appliance should be situated so that its location or position does not interfere with its proper ventilation. For example, the appliance should not be situated on a bed, sofa, rug, or similar surface that may block the ventilation openings; or placed in a built-in installation, such as a closed bookcase or cabinet that may impede the flow of air through the ventilation openings.

Heat The appliance should be situated away from heat sources such as radiators, heat registers, stoves, or other appliances (including amplifiers) that produce heat.

Power Sources The appliance should be connected to a power supply only of the type described in the operating instructions or as marked on the appliance.

Power-Cord Protection Power-supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them. Pay particular attention to cords at plugs, convenience receptacles, and the point