The Bose® 251TM Environmental Speakers Owner’s Guide
For your records… Serial numbers are located on the label on the back of each 251TM 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.
Contents Where to find… Setting Up Before you begin ........................................................................................................... 4 Unpacking the carton ................................................................................................... 4 Tools required ............................................................................................................... 4 Selecting the location for your speakers ........................................................
Setting Up Before you begin… Thank you for purchasing Bose® 251TM environmental speakers. These high-performance outdoor speakers are engineered to provide sound 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.
Setting Up Selecting the location for your 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, consider the length of your listening area as your “wall.”) The 251TM speakers should be placed at least 7 feet (2 m) apart. Please consider the following before mounting your speakers: • Measure the length of speaker wire you need to connect each speaker to your receiver or amplifier.
Installing Your 251TM Speakers Choosing the speaker wire 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 recommendations” under “Technical Information” on page 13. Or check with your authorized Bose® dealer.
Installing Your 251TM 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 (Figure 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 A. B. 3 ⁄32 inch (2.25 mm) 1 1 1⁄2 inch (2.25 mm) 1 1⁄2 inch (2.
Installing Your 251TM 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 Note: If you are mounting your 251TM 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.
Installing Your 251TM Speakers Attaching the speakers to the brackets (cont.) Figures 13A and 13B B. A. Temporarily tighten the speakers to the brackets A. Exterior of the house B. Deck railing or table Making the connections 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 (–).
Installing Your 251TM Speakers Attaching the speakers to the brackets (cont.) A. B. Figures 16A & 16B Connecting the speaker wire A. Exterior of a house B. Deck railing or table 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.
Installing Your 251TM Speakers Making the connections (cont.) 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). Figures 18A and 18B A. B. Putting the speaker in the final position A. Exterior of the house B.
Maintaining Your 251TM Speakers Troubleshooting Problem What to do Neither speaker plays • Check the settings on your receiver or amplifier. Refer to the owner’s guide that came with it for instruction on settings. • If your 251TM 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.
Product Information Technical Information Protective features • Galvanized powder coated steel grille • Environmentally resistant hardware • Polymer fiber composite drivers • Nickel-plated brass connection terminals • Syncom® computer quality control Driver complement • Two (2) 21⁄2" environmental TwiddlerTM drivers per speaker • One (1) 51⁄4" environmental woofer per speaker Enclosure • Dual-port molded polypropylene composite • Black or white Dimensions • 131⁄2" H x 53⁄4" W x 8" D (34.29 cm x 14.
©2004 Bose Corporation The Mountain, Framingham, MA 01701-9168 USA 250811-ENGvo AM Rev.
