English
TAB 2 | TAB 3 | TAB 4 | TAB 5 | TAB 6 | TAB 7 | TAB 8 |
REFERENCE
Troubleshooting
Problem | Possible solution |
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The speakers do | • Check the settings on your receiver/amplifier. Refer to the owner’s guide that came with it for |
not play | instruction on settings. |
| • If other stereo speakers are connected to a second set of audio outputs on your amplifier/ |
| receiver, make sure to select the proper A or B speaker setting to match the A or B outputs |
| connected to your Virtually Invisible® 791 speakers. |
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Only one speaker | • Check the balance control on your receiver/amplifier and make sure it is centered. |
plays | • Trace the cord from the speaker in question to the receiver/amplifier and make sure no wires |
| from the + and – terminals on the receiver/amplifier are touching. |
| • Disconnect the cord from the receiver/amplifier channel and reconnect it to a different |
| receiver/amplifier channel. |
| – If the performance is now fine, the problem lies in the original receiver/amplifier channel, |
| the component source of the music, or the connections between the receiver/amplifier and |
| the source. Check all of those to make sure they are performing properly. Reconnect the |
| speaker to the proper channel of a functioning receiver/amplifier. |
| – If the problem persists, its source is either the speaker wire or the speaker in question. |
| Follow the next instruction. |
| • Check the cable connected to the speaker in question to be sure that no wires from the + |
| and – terminals are touching. |
| • Disconnect the cord from the speaker in question and reconnect it to another speaker. |
| – If the performance is now fine, the problem lies in the original speaker. Contact your |
| authorized Bose dealer, who will arrange for service. Or, to contact Bose directly, refer |
| to the address list included in the carton. |
| – If the problem persists, its source is the speaker wires. Follow the next instruction. |
| • Replace and |
| and find no other source of the problem. |
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The bass or treble | • Check the tonal balance setting on your receiver/amplifier. |
is weak | • Check for gaps between the speaker frame and the ceiling surface. |
| • Trace the cord from the speaker in question to the receiver/amplifier and switch the wires |
| connected to the + and – terminals at that end. |
| – If this strengthens the bass performance, the problem was caused by inconsistent polarity |
| of the connections made at either end of the cable. |
| • Disconnect the cord from the receiver/amplifier channel and reconnect it to a different |
| receiver/amplifier channel. |
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Static or noise from | • Trace the cord from the speaker in question to the receiver/amplifier. Make sure the wires are |
one speaker | in good condition, are firmly connected, and are not touching across terminals. |
| • Check the connections from the source of the music to the receiver/amplifier. |
| • Unscrew the speaker clamps and remove the affected speaker to reveal the cable. Make |
| sure the wires are in good condition, are firmly connected, and are not touching across |
| terminals. |
| • If the previous efforts do not solve the problem, refer to the proposed solutions for “Only one |
| speaker plays” above. |
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