Bose 251 BLACK Speaker User Manual
Contents
1. are connected positive to positive to and negative to negative to gt Then repeat steps 1 and 2 to re test the speakers Making the connections cont Figures 18A and 18B Putting the speaker in the final position A Exterior of the house B Deck railing or table Figure 19 Attaching the rubber feet Figure 20 Rotating the Bose logo Installing Your 251 Speakers Putting the speakers in the final location Loosen the knobs on each speaker to rotate the speakers into the desired position Then tighten the knobs to secure the speaker in its final position Figures 18A and 18B A B Attaching the rubber feet If you do not plan to use the supplied brackets to mount your 251 environmental speakers you can place them on a sturdy level surface They should be standing in the vertical position Be sure to attach the rubber feet before using your speakers For proper balance be sure to place the feet in the position shown in Figure 19 Rotating the Bose logo Mounting the speakers on a deck railing or table will require you to rotate the Bose logo Using your fingers gently lift the logo taking care not to detach it from the speaker about inch 24 cm and turn it 180 11 Troubleshooting Problem Neither speaker plays The bass or treble is weak Only one speaker plays Only one speaker still plays Warranty period Customer service What to do e Check the s2. the speaker wire 10 A Connecting the speaker wire to the receiver or amplifier 1 Connect the speakers on the left side of the listening area to the left channel of your receiver or amplifier Figure 17 a Attach the marked wire to the red terminal b Attach the plain wire to the black terminal 2 Connect the speaker on the right side of the listening area to the right channel of your receiver or amplifier following the same procedure above Figure 17 Note If your 251 speakers are being connected as a secondary set of speakers to your receiver or amplifier be sure to make the appropriate connections to the B channel Checking the connections Check the speaker 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 Testing the connections To make sure your speakers operate correctly follow these steps 1 Set the balance control on your receiver or amplifier to normal centered 2 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 reversed causing the speakers to play out of phase Refer to Making the connections on page 9 To correct the problem make sure all the wires
3. Figure 8 Then drill four starter holes using a7 inch 2 5 mm drill bit Figure 9 Figure 7 251 environmental speaker mounted onto a deck railing or table Figure 8 Marking four holes on a deck railing or table Figure 9 Drilling four holes on a deck rail ing or table Installing Your 251 Speakers Installing the mounting brackets cont Installing the brackets onto a deck railing or table cont Finally install the four screws using a Phillips head screwdriver Figure 10 Figure 10 Installing the bracket onto a deck railing or table J Note If you are mounting your 251 speakers on a deck railing or table you will need to rotate the Bose logo Refer to Rotating the Bose logo on page 11 for instructions on how to do this Attaching the speakers to the brackets Figure 11 Once the brackets are installed carefully follow these steps to attach the speakers to the brackets First insert the knobs into each side of the speakers Be sure to turn each knob two full rotations Figure 11 Then carefully slide the speakers into the brackets Figure 12 Finally temporarily tighten the speaker in a position that will allow you to easily connect the speaker wire Figures 13A and 13B Installing the knobs Figure 12 two full rotations Sliding the speakers into the brackets Attaching the speakers to the brackets cont Figures 13A and 13B Temporarily tighte
4. The Bose 251 Environmental Speakers Owner s Guide Brugervejledning Bedienungsanleitung Gu a del usuario Notice d utilisation Manuale di istruzioni Gebruiksaanwijzing Bruksanvisning _ BUSE For your records Serial numbers are located on the label on the back of each 251 environmental speaker Serial numbers and Dealer name Dealer phone _________ Purchase date We suggest you keep your sales slip and warranty card together with this owner s guide Where to find Setting Up SIONS VOU A Egeo pex a A A e A A Selecting the location for your speakers Installing Your 251 Speakers Choosing the speaker Wie idol poleas Installing the mounting brackets acs apa seredecrcntttatesnncinstcteenmastsetsscigdatuiesendbaadneusscosvietisadoseaten suet Attaching the Speakers to the brackets siria etc Making the COINS GON Sas cate steccambeattietesmasteneiaceae tations article eni A eis ERRAN Ri E Sae iE Maintaining Your 251 Speakers A o A A ATLARIN E ela dale A E A E annem ners ey A rete rennin E E A Cleaning your Peares usina dali Protecting the speaker WilSccescuinosisianssabietioslantiencijai vinilos ia jaccniildeiosaieres Product Information lega eli A A e oo A sas e ocio A A CO 0 UP o0Uo O Ai a O D a a N Before you begin Thank you for purchasing Bose 251 environmental speakers These high performance out door speakers are engineered to provide s
5. cover of this owner s guide for a list of phone numbers Bose 251 environmental speakers are covered by a limited five year transferable warranty 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 For additional help in solving problems contact Bose Customer Service See the inside back cover for offices and phone numbers Cleaning your speakers Use a cloth dampened in mild detergent and water to remove dust or dirt from the outside of your 251 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 drivers or the acoustic ports Protecting the speaker wire 12 The bare ends of the speaker cord can be affected by exposure to the elements This is especially true of saltwater exposure 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 connections annually and reapply as needed Product Information Technical Information Protective features e Galvanized powder coated steel grille e Environmentally resistant hardware e Polymer fiber composite drivers e Nickel plated brass connection terminals e Syncom computer quality control Driver complement e Tw
6. eakers to move so it is important that you install the supplied rubber feet before using the speakers on a surface Refer to Attaching the rubber feet on page 11 Installing the brackets onto the exterior of a house The 251 speakers should be mounted in a vertical position to achieve the best musical performance Figure 3 illustrates how the mounted speaker will look once the installation is complete To begin mark four holes to indicate where you want to install the speaker bracket Figure 4 For wood drill four starter holes using a _ inch 2 5 mm drill bit Figure 5 For ce ment drill four starter holes using a inch 6 0 mm drill bit Figure 5 Installing Your 251 Speakers Installing the mounting brackets cont Installing the brackets onto the exterior of a house cont For mounting onto wood install the supplied screws using a Phillips head screwdriver Fig ure 6A For concrete use first install the supplied plastic inserts Then using a Phillips head screwdriver install the screws Figure 6B Figures 6A and 6B Installing the hardware A Wood B Concrete Installing the brackets onto a deck railing or table The 251 speakers should be mounted in a vertical position to achieve the best musical performance Figure 7 illustrates how the mounted speaker will look once the installation is complete To begin mark four holes to indicate where you want to install the speaker bracket
7. er Installing Your 251 Speakers Choosing the speaker wire d A Be sure to use the proper gauge thickness of speaker wire 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 recom mendations under Technical Information on page 13 Or check with your authorized Bose dealer If you decide to run the speaker wire through a wall or underground check your local building code requirements or contact an electrical installer before proceeding Note Be sure to cut enough wire to reach from the receiver to each speaker CAUTION Before making any connections turn off your receiver or amplifier and unplug it from the outlet the AC power mains Installing the mounting brackets A Figure 3 251 environmental speaker mounted onto the exterior of a house Figure 4 Marking four holes on the exterior of a house Figure 5 Drilling four holes on the exterior of a house The 251 speakers should be mounted using the supplied brackets They can be mounted onto the exterior of a house or onto a deck railing or table If you choose not to use the sup plied brackets be sure to position your 251 speakers on a sturdy surface CAUTION If you do not use the supplied brackets choose a level surface for the speakers Vibra tion can cause the sp
8. ettings on your receiver or amplifier Refer to the owner s guide that came with it for instruction on settings e f your 251 speakers are connected as a second set of speakers to your receiver or amplifier check that the connections have been made to the B terminals and that the B speakers are selected to play e Check the tonal balance setting on your receiver or amplifier e Check the balance control on your receiver or amplifier and make sure it s centered e 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 Making the connections section on page 9 e Disconnect the working speaker from the receiver or amplifier e Switch the cord of the faulty speaker from its original receiver or amplifier jacks to the other set of jacks the working speaker was originally attached to those jacks If the speaker now works the problem is in your receiver or amplifier Reconnect your speakers to a working unit If there is still no sound from the speaker continue below e Remove the cord from the working speaker and connect it to the faulty speaker lf the speaker now works the problem was in the original speaker cord If there is still no sound the problem is in the speaker e f trouble persists contact your authorized Bose dealer who will arrange for service Or contact Bose customer service See the inside back
9. n the speakers to the brackets A Exterior of the house B Deck railing or table Installing Your 251 Speakers Making the connections Figure 14 Preparing the ends of each wire Figures 15 Unscrewing the hex knob Preparing the speaker wire not provided Speaker cord consists of two insulated wires The insulation around one wire is striped collared or ribbed This marked wire is positive The plain wire is 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 negative inch 1 3 cm At the ends of each cord strip approximately inch 1 3 cm of insulation from both wires Figure 14 Next twist the ends of each wire so there are no loose strands Connecting the speaker wire to the speakers At the back of your speaker unscrew the hex knobs on the terminal posts This reveals a small opening through each post Figure 15 Using the wire guides insert the marked wire into the red terminal Then insert the plain wire into the black terminal Tighten the knobs to secure the wires See Figures 16A and 16B on page 10 Installing Your 251 Speakers Attaching the speakers to the brackets cont Figures 16A 16B Connecting the speaker wire A Exterior of a house B Deck railing or table Figure 17 Connecting
10. o 2 2 environmental Twiddler drivers per speaker e One 1 5 environmental woofer per speaker Enclosure e Dual port molded polypropylene composite e Black or white Dimensions e 13 H x57 W x 8 D 34 29 cm x 14 6 cm x 20 32 cm Compatibility e Compatible with amplifiers or receivers rated 10 200 watts per channel rated 4 to 8 onms e 100W IEC continuous power handling rated 6 ohms Environmental Capabilities e Designed to withstand salt fog sun high humidity 100 RH temperature extremes 40 F to 158 F 40 C to 70 C Wire recommendations e Based on a maximum frequency response deviation of 0 5 dB Gauge Length 18 0 75 mm 30 ft 9 m maximum 16 1 5 mm 45 ft 14 m maximum 14 2 0 mm 70 ft 21 m maximum Weight e 8lb 3 63 kg each 13 Ga ED LJ E MODE A O 2008 Bose Corporation The Mountain Framingham MA 01701 9168 USA AM250811 Rev 06 250811
11. ound quality far beyond that of other environmental speakers The 251 environmental speakers are designed to withstand nature s elements so you can be confident they will perform for years to come Unpacking the carton Carefully unpack your speakers and save all packing materials for possible future use Check that your system contains the parts identified in Figure 1 Do not attempt to use your speak ers if any part of them appears damaged Instead notify Bose Corporation or your authorized Bose dealer immediately A WARNING To avoid danger of suffocation keep the plastic bags out of the reach of children Figure 1 Packaging contents e Two 251 speakers e Two mounting brackets e Mounting hardware 8 screws and 8 plastic anchors e Six rubber feet e Four knobs e One owner s guide Tools required You need the following items to complete this installation e Speaker wire see Wire recommendations on page 13 e Phillips head screwdriver 2 e A drill with the following bits AY inch diameter 2 5 mm bit is preferred or you can use a inch diameter 3 0 mm bit For concrete a inch 6 0 mm diameter masonry bit can be used e Eye and ear protection e Dust mask A CAUTION Failure to follow the instructions in this owner s guide voids all warranties on your speakers If you are unsure of your ability to complete this process consult a professional installer Please read this owner s guide comple
12. tely before beginning installation Selecting the location for your speakers Figure 2 Speaker placement guidelines 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 consider the length of your listening area as your wall The 251 speakers should be placed at least 7 feet 2 m apart Please consider the following before mounting your speakers e Measure the length of speaker wire you need to connect each speaker to your receiver or amplifier To determine the wire gauge you will need refer to the Wire recom mendations on page 13 e It is important that the speaker wire not be tripped over pinched or pulled Determine the best route to protect the wire CAUTION Do not mount on surfaces that are not sturdy enough or that have hazards concealed behind them such as plumbing or electrical wire If you are unsure about installing these speakers contact a qualified professional installer e Regardless of where you place your speakers make sure they cannot fall and cause Injuries e Bose 251 speakers are not magnetically shielded Keep them at least 9 inches 23 cm from any video screen or monitor Note This product is not intended for use in areas where it will be subject to high vibration If you are unsure about installing these speakers contact a qualified professional install
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