Velodyne SPL-800i - Manual (Page 14)

www.velodyne.com 8 - SPL-800i User’s Manual
during normal conditions, your new subwoofer may be left on continuously without any problems. The unit is
equipped with a signalsensing 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.