Bose Speaker 24643 User Guide page

®
TM  
The Bose 251 Environmental Speakers  
OwOOwner  
Owner’s Guide  
October 30, 2001  
AM250811_04_V.pdf  
ltkje  
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For your records…  
Serial numbers are located on the label on the back of each 251TM environmental speaker.  
Serial numbers:  
Dealer name:  
Dealer phone:  
and  
Purchase date:  
We suggest you keep your sales slip and warranty card together with this owner’s guide.  
DECLARATION OF CONFORMITY  
We, the offerer:  
Bose® Corporation, The Mountain, Framingham, MA 01701-9168 USA  
acknowledge our sole responsibility, that the product:  
Kind of equipment: Loudspeaker  
Type designation: 251TM Environmental Speakers  
in accordance with EMC Directive 89/336/EEC and Article 10(1) of the  
Directive, is in compliance with the following norm(s) or document(s):  
Technical regulations: EN50081-1, EN50082-1  
Accredited by:  
Bose Corporation, The Mountain, Framingham, MA 01701-9168 USA  
15 Jan. 2000  
Bose Products B.V.  
Nijverheidstraat 8, 1135 GE Edam  
The Netherlands  
Nic Merks  
Vice President Europe  
Manufacturer’s authorized EU  
representative  
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AM250811_04_V.pdf  
Contents  
Where to find…  
Setting Up  
Before you begin........................................................................................................... 4  
Unpacking the carton ................................................................................................... 4  
Tools required ............................................................................................................... 4  
Selecting the location for your speakers ...................................................................... 5  
Installing Your 251TM Speakers  
Choosing the speaker wire ........................................................................................... 6  
Installing the mounting brackets................................................................................... 6  
Attaching the speakers to the brackets ........................................................................ 8  
Making the connections................................................................................................ 9  
Maintaining Your 251TM Speakers  
Troubleshooting .......................................................................................................... 12  
Warranty period .......................................................................................................... 12  
Customer service ........................................................................................................ 12  
Cleaning your speakers .............................................................................................. 12  
Protecting the speaker wire ........................................................................................ 12  
Product Information  
Technical information.................................................................................................. 13  
Bose® Corporation ....................................................................................inside back cover  
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October 30, 2001  
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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 environ-  
mental 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 autho-  
rized Bose dealer immediately.  
WARNING: To avoid danger of suffocation, keep the plastic bags out of the reach of  
children.  
Figure 1  
Packaging contents:  
Two 251 speakers  
Two mounting brackets  
• Mounting hardware (8 screws  
and 8 plastic anchors)  
• Six rubber feet  
• Four knobs  
• One owner's guide  
Tools required  
You need the following items to complete this installation:  
• Speaker wire (see “Wire recommendations” on page 13)  
• Phillips-head screwdriver (#2)  
• A drill with the following bits:  
- A 332 inch diameter (2,5 mm) bit is preferred, or you can use a 18 inch diameter (3,0 mm)  
bit. For concrete, a 14 inch (6,0 mm) diameter masonry bit can be used.  
• Eye and ear protection  
• Dust mask  
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 completely before beginning installation.  
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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. To determine the wire gauge you will need, refer to the “Wire recom-  
mendations” on page 13.  
• 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 install-  
ing these speakers, contact a qualified professional installer.  
• Regardless of where you place your speakers, make sure they cannot fall and cause  
injuries.  
• 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 installer.  
Figure 2  
Speaker placement guidelines  
7 ft (2 m)  
minimum space between  
speakers  
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Installing Your 251 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 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  
The 251TM 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  
supplied 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 speak-  
ers. Vibration can cause the speakers 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 332 inch (2,5 mm) drill bit (Figure 5). For  
cement, drill four starter holes using a 14 inch (6,0 mm) drill bit (Figure 5).  
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  
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TM  
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 (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  
A.  
B.  
Installing the hardware  
A. Wood  
B. Concrete  
3
14 inch (6.35 mm)  
1 12 inch (2.25 mm)  
32 inch (2.25 mm)  
1 12 inch (2.25 mm)  
3
14 inch (6.35 mm)  
1 12 inch (2.25 mm)  
32 inch (2.25 mm)  
1 12 inch (2.25 mm)  
Installing the brackets onto a deck railing or table  
The 251TM 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  
(Figure 8). Then, drill four starter holes using a 332 inch (2,5 mm) drill bit (Figure 9).  
Figure 7  
251 environmental speaker  
mounted onto a deck railing or  
t
Figure 8  
Marking four holes on a deck  
railing or table  
Figure 9  
Drilling four holes on a deck  
railing or table  
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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  
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.  
Attaching the speakers to the brackets  
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 Your 251 Speakers  
Figure 11  
Installing the knobs  
two full rotations  
Figure 12  
Sliding the speakers into the  
brackets  
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Installing Your 251 Speakers  
Attaching the speakers to the brackets (cont.)  
B.  
Figures 13A and 13B  
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 (–). 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).  
Figure 14  
Preparing the ends of each  
wire  
12 inch (1.3 cm)  
At the ends of each cord, strip approximately 12 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.  
Figures 15  
Unscrewing the hex knob  
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