Velodyne Acoustics MiniVee Audio/Video Subwoofer System - Manual (Page 7)

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CARE OF YOUR SUBWOOFER
Your Velodyne subwoofer does not require any regular maintenance.
Normal dusting or cleaning of the surface for appearance purposes are
all that is required. We suggest you avoid any harsh detergents or
chemicals when cleaning the cabinet. Abrasives, detergents, or cleaning
solutions may damage the finish on the cabinet. We recommend using
only a damp cloth to clean the cabinet.
During normal conditions, your new subwoofer may be left on
continuously without any problems. The unit is equipped with a signal-
sensing turn on/ off that will automatically turn on the unit when a signal
is present at the inputs and turn off the unit after several minutes when
there is no longer any signal at the inputs. If you plan to leave the
subwoofer unused for an extended period of time, we recommend that
you turn off the master power switch on the rear panel.
PROTECTION CIRCUITRY
Your new subwoofer is equipped with special protection circuitry to
provide maximum performance with greatest reliability.
The unit is protected against:
1) Overdriving the speaker or amplifier
2) Overheating the amplifier
3) Excessive drop in power line voltage
The first type of protection circuitry which prevents overdriving of the
speaker or amplifier operates constantly without being audible under
most situations. In some extreme situations (sustained high output levels
such as pro sound usage), the unit may shut down momentarily. This
indicates the thermal or under-voltage protection circuitry has engaged.
If this should happen, you should reduce the volume setting or shut the
unit off until normal operating conditions return. You may also want to
plug the unit into a different wall outlet, as dropping power line voltage
will be most noticeable under strenuous conditions and may result in the
unit shutting down intermittently.
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TROUBLESHOOTING AND SERVICE
If you should experience a problem with the operation of your subwoofer,
please check all of the following before seeking service. Following is a
simple troubleshooting guide to assist you.
1. Verify that the unit is plugged in, power outlet used is active and
supplying proper voltage.
2. Is the power switch on?
3. Is the auto turn on/off set properly?
4. Is the unit receiving an input signal from your source?
5. Have all controls on the subwoofer (volume, crossover, phase,
etc.) been properly set?
6. If unit has been running at high levels for an extended period of
time, one of the protection circuits may be engaged.
• Is the built-in amplifier extremely hot to the touch?
• Is your power line voltage sagging below acceptable levels?
If the protection circuitry is active, the unit may cycle on and off until
operating parameters return to normal. Under more serious conditions,
the unit may shut off completely. Normal operation should return upon
cooling, but you may be required to turn the power off and then on again
to reset the unit.
The following conditions require service by a qualified technician:
1. The power cord has become damaged
2. The unit does not appear to operate normally or exhibits a
marked change in performance
3. The unit has been exposed to water
4. Some part of the cabinet or circuitry is physically damaged
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