Bose 40 Fine-tuning your system, Adjusting speaker controls, Compensating for room acoustics

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Operating Your Lifestyle® 40 Music System

Fine-tuning your system

Figure 32

Treble and bass controls

In most situations, you only need to follow the speaker placement guidelines (see “Setting Up” on pages 6-7) for your system to provide excellent sound quality. You do not need to adjust tone settings for changes in volume, since Bose® patented integrated signal process- ing provides a natural tonal balance over the full range of volume settings. If desired, you can further fine-tune your system as described here.

Treble

Bass

Figure 33

AM/FM ANTENNA SIGNAL display

Adjusting speaker controls

The Lifestyle® 40 music system treble and bass controls are located on the Acoustimass® module (Figure 32). They allow you to adjust the treble (high frequencies) and bass (low frequencies). In the normal setting, the dots on each control are in the 12 o’clock position. You can also locate the normal setting by feeling when the control settles into the notch at this position. Turn the controls clockwise to increase, and counterclockwise to decrease, the amount of treble or bass.

Compensating for room acoustics

The acoustics (sound qualities) of your room can affect the overall sound quality of any speaker system. In general, you can reduce many problems with acoustics by the careful use of the treble and bass controls.

Too much or too little treble

Rooms that reflect a lot of sound, especially those with bare floors and walls, may sound overly shrill or “bright.” Turning down the treble control (toward – ) decreases treble sound. Rooms with a lot of sound-absorbing furnishings, such as upholstered furniture, wall-to-wall carpet, or heavy drapes, may sound muffled or dull. Moving speakers further away from soft furnishings increases treble. You can increase treble sound by slightly turning up the treble control (toward + ).

Too much or too little bass

You can decrease bass sound by turning down the bass control (toward – ). To increase bass, turn up the bass control (toward + ). Acoustimass module placement also affects the amount of bass you hear. Placing the module closer to the corner of the room increases bass. Moving the module away from the corner decreases bass.

Optimizing AM/FM radio reception

You can adjust the orientation of your AM/FM antenna for the strongest signal by selecting SIGNAL LEVELS with the MENU button (Figure 33). Select the AM or FM radio, and the display shows you the strength level of the received signal. While watching the display, reposition your antenna until the highest possible signal level is achieved. The signal level can vary from 0 to 99. The manual tuning keys are provided so that you can check the signal strengths of multiple stations.

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AM189858_03_V.pdf

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Contents Bose Lifestyle 40 Music System Class B emissions limits Additional safety informationClass 1 laser product BatteriesInformation about products that generate electrical noise Antenna grounding Where to find … For your recordsBefore you begin Unpacking the carton What comes with your Lifestyle 40 systemSelecting the locations for your Lifestyle 40 music system Jewel Cube speakersAcoustimass module Multi-room interfaceCD changer Connecting your system Connecting the Jewel Cube speakers to the Acoustimass moduleConnecting the CD changer to the multi-room interface Connecting the Acoustimass module power mains cord Connecting the multi-room interface power packTape deck Connecting external componentsVideo components Laserdisc player or additional CD changerFM antenna connections Connecting the antennasConnecting to a cable radio signal AM antenna connectionsSetting up the Personal music center Completing connections and turning on the Acoustimass moduleTurning on the system Turning the system onTurning the system off Adjusting the volume Using the sleep timerMuting your system Using the Source buttons Using the Personal music center displayUsing the primary buttons Using the Keypad buttonsUsing the Menu items PresetsListening to the radio Setting radio channel spacingManually tuning a radio station Turning the system on and choosing the radioSelecting a preset station Setting a station presetSeeking the strongest stations Erasing a preset station Setting presets using the Presets menuTo set a preset station Managing your preset stationsUsing the CD changer Listening to compact discsTurning the system on and choosing the CD changer To omit a track from normal play To scan a discTo add a track to the play list To listen to the CD play listUsing the CD Options menu Selecting repeat and random modesSelecting play list modes Programming a CD play list To create a CD play listTo change an entry in the CD play list To insert a new track in an existing play list To delete a track from the play listTo erase the entire CD play list Using the system with external components Using a tape recorder with your systemTurning the system on and selecting the component Compensating for room acoustics Fine-tuning your systemAdjusting speaker controls Optimizing AM/FM radio receptionEqualizing the volume levels of external sources Adjusting LCD contrastAdjusting the Personal music center beep Forcing the Source buttons to stay on Forcing the Keypad buttons to stay onAdjusting the display fade time Connecting additional rooms Understanding the room indicators Operating in more than one roomControlling two or more rooms together Using the Room buttonSetting up a shared source Returning to single-room controlUsing more than one Personal music center Using the House buttonFinding a misplaced Personal music center Replacing batteriesCleaning the CD changer Cleaning the systemCleaning the Personal music center Cleaning the speakers and Acoustimass moduleTroubleshooting Problem What to doWarranty period Customer ServiceAccessories Technical informationIndex Record OUT 27 Signal Levels 28 Index Page Australia CanadaEuropean Office Belgique/België

40 specifications

The Bose 40 is an exceptional headphone model that offers an immersive audio experience, catering to audiophiles and casual listeners alike. Known for its remarkable sound quality, the Bose 40 incorporates advanced engineering and innovative technologies to deliver rich, balanced audio.

One of its standout features is the Active Noise Cancelling (ANC) technology. This system uses microphones inside and outside the ear cups to detect ambient noise, effectively cancelling it out for a serene listening environment. Whether you are commuting, traveling, or simply enjoying music at home, the ANC capability ensures you remain undisturbed by outside distractions.

The Bose 40 headphones also feature a proprietary TriPort Acoustic headphone structure, which enhances low-frequency performance without compromising mids or highs. This design ensures that users enjoy a full spectrum of sound, making every listening session a pleasure. The combination of dynamic drivers and a precise acoustic port embedded within the ear cups results in a sound that is both powerful and precise.

Comfort is a critical aspect of the Bose 40 design. The ear cups are crafted from soft materials that provide a snug fit, allowing for extended listening without discomfort. Additionally, the headband is carefully designed with cushioning, making these headphones suitable for prolonged use whether for work or leisure.

With Bluetooth connectivity, the Bose 40 headphones support seamless pairing with a wide array of devices, from smartphones to tablets and laptops. The headphone comes equipped with voice assistant integration, allowing quick access to Siri, Google Assistant, or Alexa. Users also appreciate the intuitive touch controls located on the ear cups, making it easy to play, pause, or skip tracks without needing to retrieve devices.

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All these features come together to make the Bose 40 a leading choice in the headphone market, appealing to listeners who seek top-tier audio quality combined with comfort, modern technology, and longevity.