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JBL S3900 Manual

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www.jbl.com
English
www.jbl.com
INSTALLINg ThE SPIkED FOOT INSERTS
Before using the speaker, install the supplied spiked inserts into the speaker’s metal feet.
1. Turn the speaker upside down onto a thickly carpeted or well-padded surface.
2. Screw the spiked inserts into the feet.
IMPORTANT: To prevent damage (scratches, indentations, etc.) to wood or linoleum floors due to the weight of these
speakers, always use the included coasters. Be especially sure to use the coasters on tile surfaces to prevent cracking
the tile.
PLACEMENT
Because the metal spikes solidly couple the speaker to the floor, a flat, hard surface such as wood or linoleum is
preferable. However, the coupling system, along with the speakers’ weight, should result in excellent performance on
any surface, even carpeting.
IMPORTANT: To prevent damage (scratches, indentations, etc.) to wood or linoleum floors, always use the included
coasters. Be especially sure to use the coasters on tile surfaces to prevent cracking the tile.
To decide on a final location for your speakers, survey your room and think about placement, using the illustration
below as a guide.
>50cm
(20 in)
>50cm
(20 in)
1.5m – 2.5m
(5' – 8')
40° – 60°
Listening Position
For the best results, place the speakers about one and one-half to two and one-half meters (about five to eight feet)
apart. If you place the speakers farther apart, angle them toward the listening position.
The speakers will produce the most accurate stereo soundstage when the angle between the listener and the speakers
is between 40 and 60 degrees.
Position each speaker so that its high-frequency horn is approximately at ear level.
Generally, bass output will increase as the speaker is moved closer to a wall or corner. For the best performance, we
recommend that you place the speakers at least 50cm (about 20 inches) away from the side walls.
You must place the speaker with its rear panel at least 20cm from the wall behind it to allow proper operation of the
rear-panel mounted bass reflex port.
NOTES ABOUT SPEAKER PLACEMENT:
• To prevent damage (scratches, indentations, etc.) to wood or linoleum floors due to the weight of these speakers,
always use the included coasters. Be especially sure to use the coasters on tile surfaces to prevent cracking the tile.
• Avoid placing the speakers near power ampliers, heat registers or other objects that generate large amounts of heat.
• Do not place the speakers in very humid or dusty places.
• Do not place the speakers in direct sunlight or in places where they will be exposed to other strong light.
• The S3900 is not video-shielded and may distort or discolor the picture if placed close to CRT TVs. If the speakers
do distort or discolor your TV’s picture, move the speakers away from the TV until the distortion or discoloration
disappears.
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