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Bose 151 environmental speakers Sold from 1994 User Manual

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    Table of contents
    How and where to use
    Bose® 151 speakers................................. 3
    Decide where you
    want the speakers ................................. 4
    Unpack the speakers ............................ 5
    How to hook up Bose 151 speakers....... 5
    Choose the speaker cord ...................... 5
    Use the cord properly ........................... 6
    Make the connections ........................... 6
    Check the connections ......................... 7
    Test the connections ............................. 7
    Accessories............................................. 8
    How to maintain
    Bose 151 speakers.................................. 8
    Protect the connections ........................ 8
    How to clean the speakers .................... 8
    How to check out problems .................. 9
    Warranty period .................................... 9
    For information .................................... 10
    Technical information........................... 11
    Customer information
    The serial numbers on my 151® speakers
    I purchased them on:
    City State Zip
    How and where to use
    Bose 151 speakers
    Bose 151 speakers are designed to meet
    the challenges of year-round outdoor use.
    They can deliver Bose quality sound to
    areas where you work, play, and relax
    outside. From potting shed to workshop,
    patio to poolside, they will extend your
    musical pleasure. You can even install 151
    speakers on board your boat.
    You may also use these speakers indoors, in
    areas where high humidity is common, such
    as an indoor pool area or bathroom.
    Once you decide where you will use your
    151 speakers, consider the optional all-
    weather mounting and installation accesso-
    ries from Bose. (Refer to “Accessories” on
    page 8.) Thank you for purchasing Bose
    ® 151®
    environmental speakers. Their propri-
    etary Bose technologies and all-weather
    construction offer you listening enjoy-
    ment both indoors and out. 
    If you place your 151® speakers outdoors,
    you will probably connect them to an
    amplifier or receiver that is inside.
    You may want to consult an electrical
    installer who can route wires underground
    or through walls if necessary.
    Whether you mount them inside or out,
    consider the following:
    •Measure the length of speaker cords you
    need to connect each speaker to your
    receiver or amplifier. To determine the
    wire gauge you will need, refer to the wire
    gauge recommendations under “Techni-
    cal information” on page 10.
    •It is important that the speaker cord not
    be tripped over, pinched, or pulled.
    Determine the best route to protect the
    Length of wall
    of wall®
    Figure 1
    Place one speaker one-sixth of the way from each end of the wall.
    Decide where you
    want the speakers
    For best results, mount both speakers on the
    same wall, facing the listening area. Make
    sure they do not face each other. (Outdoors,
    if you are not using an existing wall, con-
    sider the length of your listening area as
    your “wall.”)
    Measure the length of the wall and divide
    that length by six. Place one speaker one-
    sixth the length from the left end of the wall.
    Place the other speaker one-sixth the length
    from the right end (see Figure 1). 
    							5 •Regardless of  where you place your
    speakers, make sure they cannot fall and
    cause injuries. See “Accessories” on
    page 8.
    •Bose 151
    ® speakers are not magnetically
    shielded. Keep them at least 9 inches
    (23 cm) from any video screen or
    Magnets in the speakers will affect a
    boat compass. Consider this in choosing a
    speaker location, or make sure to correct for
    this deviation.
    •On a boat, you can surface mount the
    speakers or mount them flush to the
    bulkhead. (Refer to “Accessories” on
    page 8.)
    To flush-mount 151 speakers in a
    boat, you must cut a hole in the bulkhead for
    each speaker. You may want to consult a
    marine electronics installer (employed by
    most boat yards) before cutting any holes.
    Unpack the speakers
    Unpack each speaker carefully. Save the
    carton and packing materials for possible
    later use. If either speaker appears dam-
    aged, do not operate either one.  Repack
    both speakers in the original carton and
    notify your authorized Bose dealer immedi-
    How to hook up Bose®
    151 speakers
    CAUTION: Before making any connections,
    turn off your receiver or amplifier and unplug
    it from the outlet (the AC power mains).
    Choose the
    speaker cord
    Be sure to use the proper gauge (thickness)
    of speaker cord. Standard zip cord (2-
    conductor, 18-gauge wire found at electrical
    and hardware stores) works for most
    applications. If your speakers will be more
    than 30 feet (9 m) from the receiver or
    amplifier, see the wire recommendations
    under “Technical information” on page 10.
    Or check with your authorized Bose dealer.
    If you decide to run the speaker cord
    through a wall or underground, check your
    local building code requirements, or contact
    an electrical installer before proceeding.
    Be sure to cut enough cord to reach
    from the receiver to each speaker. 
    Figure 2
    Insert the bare wire end into the opening on the terminal post.
    Use the cord properly
    Speaker cord consists of two insulated
    wires. The insulation around one wire is
    striped, collared, or ribbed. This marked
    wire is always positive (+). The plain wire is
    always negative (–). These correspond to
    the red (+) and black  (–) terminals on the
    back of the  speaker, receiver, or amplifier.
    Be sure to connect each wire to the proper
    terminal (positive to positive, negative to
    •Prepare the ends of each cord
    At the ends of each cord, strip approxi-
    mately 1/2 inch (12 mm) of insulation from
    both wires. Twist the bare ends of each wire.
    •Connect the cords to your speakers
    At the back of your speaker, unscrew the
    hex knob on one terminal post. This reveals
    a small opening through the post. Insert the
    bare end of one wire into the opening.
    Tighten the knob to secure the wire. Now
    insert the second wire into the second
    terminal post (see Figure 2).
    •Protect the cord
    To guard against weather wear on exposed
    wires, see “How to maintain  Bose
    ® 151®
    speakers” on page 8.
    Make the connections
    1.Connect the first cord to the left channel
    of your receiver or amplifier.
    a.Attach the marked wire at one end to
    the red (+) terminal.
    b.Attach the plain wire at that end to the
    black (–) terminal.
    2.Connect the other end of the same cord
    to your left speaker.
    a.Attach the marked wire to the red (+)
    terminal post.
    b. Attach the plain wire to the black (–)
    terminal post.
    3.Connect the second cord to the right
    channel and right speaker, following the
    same procedure.
    Figure 3
    Test the connections
    To make sure your speakers operate
    1.Set your receiver or amplifier for MONO
    (monophonic) and turn it on. Set the
    balance control to normal (centered).
    2.Place the speakers less than 6 inches
    (15 cm) apart, facing each other.
    3.Play some deep bass passages of
    music through the speakers.
    The sound should seem to come from a
    point between the two speakers. The bass
    should be full and natural. If not, your
    connections may be out of phase. Reverse
    the connections on the back of one speaker.
    Then repeat steps 1 – 3.
    or Amplifier
    Check the
    Check the speaker and receiver or amplifier
    connections carefully. Make sure no loose
    strands of wire touch across terminals. This
    could create short circuits that can damage
    an amplifier or receiver.
    Tighten any loose connections before you
    plug in the receiver or amplifier. 
    How to maintain Bose®
    151 speakers
    Protect the
    The bare wire ends of the speaker cord can
    be affected by exposure to the elements.
    This is especially true of salt water expo-
    You may use a silicone caulking material,
    such as RTV adhesive, to protect the
    connections. It is commonly available at
    hardware stores. If you do use caulking,
    apply it only after the wires are connected
    and the knobs tightened down. Check the
    caulking annually, and re-apply as needed.
    How to clean the
    Use a cloth dampened in mild detergent
    and water to remove dust or dirt from the
    outside of your 151 speakers. Or use a hose
    to rinse them thoroughly with fresh water. Do
    not use enough pressure to force water
    behind the grille and into the driver or the
    acoustic port.
    Bose Model SM-1 outdoor surface-mount
    brackets give sturdy support to 151®
    speakers attached to a shelf, wall, ceiling,
    roof overhang, or boat. You can mount the
    brackets horizontally or vertically, and
    change the angle to direct the sound.
    Bose FM-1 outdoor flush-mount brackets
    securely anchor 151 speakers to the
    bulkhead of a boat. These brackets install
    through the bulkhead surface, so only the
    speaker face and bracket trim are exposed.
    To order these brackets, or for more
    information about them, contact your
    authorized Bose retailer, or to contact Bose
    directly, see “Bose Corporation” on page
    							9 •If the speaker plays, the problem is in the
    original cord that was connected to that
     •If the speaker does not play, the problem
    is in that channel of the receiver.
    If the above solutions fail to solve your
    problem, contact your authorized Bose
    dealer to arrange for service, or  to contact
    Bose directly, see “Bose Corporation” on
    page 63. Bose Corporation will make every
    effort to resolve the problem, within the
    terms of your warranty .
    Warranty period
    Bose 151 environmental speakers are
    covered by a limited five-year transferable
    Details of coverage are on the warranty card
    that came with your speakers. Please fill out
    the information section, detach, and mail it
    to Bose.
    How to check out
    If you have any problems with your 151®
    environmental speakers, the suggestions
    below may save you a call for service.
    If neither speaker plays
    •Check the settings on your receiver or
    amplifier. Refer to the owners guide that
    came with it for instruction on settings.
    If the bass or treble is weak
    •Check the tonal balance setting on your
    receiver or amplifier.
    If only one speaker plays
    •Check the balance control on your
    receiver or amplifier.
    •Check the wires connected to the
    speaker that does not play. Make sure
    the wires are in good condition and are
    firmly connected. Review the “Hook up
    your speakers” section on page 5.
    If one speaker still does not play
    Disconnect the wires from the speaker and
    the receiver or amplifier. Disconnect the
    other cord from its speaker, and connect
    that end of the cord to the speaker that
    doesn’t play.
    •If the speaker still doesn’t play, the
    problem is in the speaker.
    •If the speaker now plays, continue
    checking for the source of the problem.
    Disconnect the same cord from the amplifier
    or receiver. Connect it to the other outputs
    on the amplifier or receiver. 
    Technical information
    Protective features
    •Nickel-plated brass connection terminals
    ® computer quality control
    Driver complement
    •One (1) 4.5" (11.4 cm) full-range environ-
    mental driver per speaker
    •Dual-port molded polypropylene
    •Black or white
    •6.1"H x 9.1"W x 5.9"D
    (15.5 x 23.1 x 14.9 cm)
    •Rated 40W IEC power handling; rated
    4 ohms. Compatible with amplifiers or
    receivers rated 10-80 watts per channel
    •Designed to withstand:
    – salt fog, sun, high humidity (100%RH)
    – temperature extremes  (-22 to 140°F;
        - 3 0° to 60°C)
    – vibrations, mechanical shock
    Wire recommendations
    •Based on a maximum frequency response
    deviation of ±0.5 dB/
    Gauge Length
    18 (0.75 mm
    2) 30 ft (9 m) maximum
    16 (1.5 mm
    2) 45 ft (14 m) maximum
    14 (2.0 mm
    2) 70 ft (21 m) maximum
    •9.5 lb (4.3 kg) per pair, in the carton 
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