Operation; Troubleshooting; Maintenance - NHT SW10 User Manual

Operation

When the SW10 is turned on, there will be an audible
pop. Do not be alarmed; this is inherent to the amplifier
design and will not damage the subwoofer or your audio
system. We do recommend, however, that the SW10
power be left on, which will both avoid the pop and allow
the built-in Standby Mode feature to disable the
subwoofer when not in use.
Every speaker, however, has limits, and it's important to
listen for them. Speaker damage most often results not
from brief loud musical peaks, but from sustained high
volume levels in some or all frequencies.
reason, extreme volume settings and excessive bass,
treble or equalizer boosts are not recommended.
If you hear unusual distortion or breakup, or notice heat
coming from the woofer, decrease volume immediately,
neutralize any excess bass, treble or equalizer boosts,
and avoid setting any controls to similar extremes again.

Maintenance

Your SW10 is designed for years of use with no or
minimal maintenance, as long as you avoid exposing it to
direct sunlight, high temperatures, or moisture. Clean
cabinets, when necessary, using a damp cloth or a mild,
non-abrasive cleaner; to clean grilles, remove from
speaker and use a soft brush or a vacuum on its lowest
setting. Do not attempt to clean the actual driver.
Changing the Fuse
The SW10 amplifier's fuse is user-serviceable.
To replace it:
• turn the power OFF
• unplug the power cord
• remove the fuse holder cover (next to the power cord)
with a flat blade screwdriver
• remove the fuse from the holder and replace it with the
appropriate type.
• reinstall the fuse holder
Always replace the fuse with one of the exact same
specifications.
For systems operating at 115 volts, use only a 5x20 mm,
T5A, 250-volt slow-blow fuse.
For systems operating at 230 volts, use only a 5x20 mm,
T3.15A, 250-volt slow-blow fuse.

Troubleshooting

If the SW10 fails to operate at all when the Power Switch
is turned on, thoroughly check the power cord, input and
output connections
If the SW10 turns on but the LED indicator fails to illumi-
nate, mis-wiring or a power surge may have caused the
protection fuse to blow. Replace it with one of correct
type and value.
If the SW10 turns on but its status LED stays red, the unit
is gone into protect mode, which could be caused by
For this incorrect wiring, short circuits, or excessive volume. Turn
off the Power Switch on the subwoofer for two or more
seconds to reset, and double check all speaker cables to
be sure that no small metal strands are
terminals.
If these steps don't restore the SW10 to operation,
contact your local Authorized NHT Dealer or NHT for
assistance.
Satisfaction
Your satisfaction with your new NHT SW10 Subwoofer is
important to us. Please note the matched products and
accessories we provide for them, and your warranty,
printed on the back of this manual. If you have any ques-
tions regarding your speakers' use, feel free to call NHT
at 1-800-NHT-9993. Enjoy your listening and viewing!
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