Velodyne Acoustics DLS-4000 Speaker User Manual


 
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Congratulations!
Congratulations on your purchase of a Velodyne DLS subwoofer system.
This system represents the state of the art in low frequency reproduction.
Your new subwoofer features Velodyne's exclusive DLS (Distortion Limit-
ing System) technology that significantly improves the subwoofer's perfor-
mance by limiting audible amplifier distortion and controlling the driver
excursion. The result is a subwoofer that reproduces music and home-
theater with a fraction of the audible distortion found in lesser products.
This exclusive DLS technology increases the detail and definition of your
subwoofer without sacrificing output or dynamic impact.
Read and follow the instructions below to insure safe and proper system
operation.
Warning!
To prevent fire or shock hazard, do not expose this equipment to rain or
moisture. To avoid electrical shock, do not open speaker enclosure or amp
chassis cover. Please observe all warnings on the equipment itself. There
are no user serviceable parts inside. Please refer all service questions to
your authorized Velodyne dealer.
Prior to installation
Please unpack the system carefully. Remove all staples used to seal the
carton as they can scratch the cabinet. Please save the carton and all
packaging materials for future use. Record the serial number in the space
provided on the warranty card or log onto www.velodyne.com.
continued. . .
Product Features and Controls
Built-in 160 watt (RMS) power amplifier (DLS-3500)
Built-in 175 watt (RMS) power amplifier (DLS-3750)
Built-in 200 watt (RMS) power amplifier (DLS-4000)
Distortion Limiting System (DLS) - limits amplifier distortion and
controls driver excursion
Subwoofer Direct - switchable crossover bypass
Adjustable (40 to 120Hz) low-pass crossover
Selectable (80 or 100Hz) high-pass crossover (DLS-4000)
85 Hz high-pass crossover (DLS-3500/DLS-3750)
Troubleshooting and Service
Before seeking service for your subwoofer, please re-check all systems.
Following is a simple troubleshooting guide to assist you.
1. Verify unit is plugged in and power outlet used is active.
2. Is power switch on?
3. Is auto turn on/off set properly?
4. Is unit receiving an input signal from your source?
5. Have all controls on subwoofer (volume, crossover, phase, etc.) been
properly set?
6. If unit has been running at high levels, one of the protection circuits may
be engaged.
7. Has the built-in amplifier overheated?
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 will 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.
Thank you for purchasing a
Velodyne DLS Subwoofer!