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3·2·1® home entertainment system

Sold from 1970 – 2006

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System settings
Setting up your Bose product
Care and maintenance
Sound settings
Connecting other products
Radio
Remote control
Compatibility
Software
Power
DVD
CD

The TV Aspect Ratio setting allows you to adjust the size of video played on your system to fit the connected TV screen. This is useful for older 4:3 TVs or to zoom or scale an image properly for a widescreen TV.

Mono audio (sound that was created for one speaker) can be intelligently played through the multiple speakers on your system by enabling Mono Decoding. Turn this on if you have mono content that you'd like to hear through all of your system speakers.

The sleep timer allows your system to turn off automatically after a selectable period of time passes. Find out how to turn the sleep timer on or off and, when enabled, how to adjust the amount of time until your system powers off.

There are multiple different languages you can choose from to display your system menus so you can view information in your preferred language.

Your system can accept different video formats (i.e. NTSC or PAL). This is useful, for example, if the system is moved to a region that uses a different format.

Your remote control can tell you what codes have been programmed to it to enable control of your equipment. This is useful if you are changing remotes or equipment, or if want to keep the codes handy for future reference.

Your system can display subtitles from DVDs playing on its internal player. Subtitles can help to understand spoken content at lower volumes or when listening to a language other than your own.

Disc players and DVDs are created for playback within specified areas—typically the areas of the world in which they were purchased. You can determine the region of you DVD player, then check if it matches the region code printed on your DVD to ensure compatibilty.

Parental controls allows you to prevent users from viewing movies based on the rating. You can select "Lock Unrated Discs" to block unrated discs or "Lock Discs Rated Above" to block discs above a certain rating. These options are based on MPAA ratings that are typically encoded in the DVD.

Your system has a demonstration mode, which is used for in-store displays. If your system is in Demo mode, find out how to exit it and resume normal use of your system.

The video black level lets you adjust the appearance of the video image by increasing or decreasing the depth of the dark areas of the picture. This is useful to adjust the image to look best on the connected TV.

The Image Format setting in the system menu selects whether your system will format video from the internal DVD player, connected video source, and the system menu for an older-style 4:3 TV or a newer-style 16:9 wide screen TV.

An FM antenna can be connected to your system to improve the FM radio reception. This is useful for setups in locations with weak or poor reception.

Learn how to set up your product, connect components and enjoy the benefits of all its features.

The AC4 speaker wire adapters have terminals to connect the bare wire ends of standard speaker wire. This is useful, for example, when extended lengths of wire is needed or when existing speaker wire has already been installed.

Directions on how to connect an external AM antenna to your Bose product.

Find out how to safely connect your product to a power source.

The universal remote control for your system can control other devices, like a cable box or Blu-ray player that is connected to your product. Learn how to program the universal remote to control a connected device.

Speaker placement can affect how your system sounds in the listening area. Get tips on positioning your speakers for the best sound quality.

A reset can reboot your product or it can clear locally-stored product settings, such as paired device lists. Find out which option is available to reset your product.

Serial numbers contain important information about your product, including model number and DOM (Date of Manufacture). The serial number can be found on your product, product packaging or app (if applicable).

If the CD, DVD or other media disc in your system has smudges or scratches, the system can have difficulty reading the contents of the disc. Learn how to safely wipe off and clean the discs.

Software and firmware updates improve product features and stability. Install any available updates to keep your product working at its best.

Installing the latest product and/or app updates ensures you experience the latest features and stability enhancements. Find out how to check the version of your product.

You can use the audio equalization controls of your product to adjust the sound quality to your liking. Learn how to access the available EQ settings.

The sleep timer allows your system to turn off automatically after a selectable period of time passes. Find out how to turn the sleep timer on or off and, when enabled, how to adjust the amount of time until your system powers off.

Computers have their own volume control. Learn how to set the volume level of a computer for use with your Bose system.

Learn how to a connect other audio sources to your system.

You can connect headphones to your system for situations when low volume listening is needed. This can be useful, for example, to listen to audio at night without disturbing others in your home with the sound from your speakers.

An FM antenna can be connected to your system to improve the FM radio reception. This is useful for setups in locations with weak or poor reception.

You can use your system to listen to the different FM, AM or DAB (where available) radio stations available in your area. Find out how to use the seek and tune functions to select the stations picked up by your system.

Your system can store radio station presets so you can quickly switch to stations you frequently listen to at the press of a button. Find out how to save presets to your system.

Directions on how to connect an external AM antenna to your Bose product.

If you no longer want your Bose remote to operate other devices, follow these instructions.

Your system can receive IR commands from other remote controls. This is useful, for example, if you want to program a third-party universal remote to control multiple devices in your home, including your Bose system. Find out how to control your system with another remote.

The universal remote control for your system can control other devices, like a cable box or Blu-ray player that is connected to your product. Learn how to program the universal remote to control a connected device.

If looking to use a power inverter with your product, note the following:

Find out which types of audio and video discs can be played by this system.

This article outlines software and firmware release dates. It includes release features and bug fixes.

Find out how to safely connect your product to a power source.

Some DVDs include additional camera angles so you can view the DVD content from another perspective. Find out how to access this feature when a DVD with multiple camera angles is played in your system.

The Repeat play mode automatically restarts the same content from the beginning once it finishes. This is useful for repeatedly playing the same content over and over, like an album or playlist.