User manual VELODYNE DLS-4000 REV A

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VELODYNE DLS-4000 REV A: Download the complete user guide (69 Ko)

Manual abstract: user guide VELODYNE DLS-4000REV A

Detailed instructions for use are in the User's Guide.

[. . . ] Wall or Ceiling Mounting -- The subwoofer should be mounted to a wall or ceiling only as recommended by the manufacturer. Ventilation -- The subwoofer should be situated so that its location or position does not interfere with its proper ventilation. For example, the subwoofer should not be situated on a bed, sofa, rug, or similar surface that may block the ventilation openings; or placed in a built-in installation such as a bookcase or cabinet that may impede the flow of air through the ventilation openings. Heat -- The subwoofer should be situated away from heat sources such as radiators, heat registers, stoves, or other subwoofers that produce heat. [. . . ] 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 refer all service questions to your authorized Velodyne dealer. Remove all staples used to seal the carton as they can scratch the cabinet. Record the serial number in the space provided on the warranty card or log onto www. velodyne. com. Product Features and Controls Thank you for purchasing a Velodyne DLS Subwoofer! Built-in 160 watt (RMS) power amplifier (DLS-3500) Built-in 175 watt (RMS) power amplifier (DLS-3750) q Built-in 200 watt (RMS) power amplifier (DLS-4000) q Distortion Limiting System (DLS) - limits amplifier distortion and controls driver excursion q Subwoofer Direct - switchable crossover bypass q Adjustable (40 to 120Hz) low-pass crossover q Selectable (80 or 100Hz) high-pass crossover (DLS-4000) q 85 Hz high-pass crossover (DLS-3500/DLS-3750) q q continued. . 9 2 q q q q q q Line-level inputs and outputs Speaker-level inputs and outputs Signal sensing auto turn on/off with bypass option Variable volume control Selectable phase control (0 or 180 degrees) Dual staggered low-pass crossover; 12dB/octave initial, 24dB/octave ultimate Placement True subwoofers operate at extremely low frequencies which are primarily omni-directional. While it is recommended that the subwoofers be placed on the same plane as the satellite speakers, room and system conditions often dictate otherwise. Keep in mind that frequency response and output level can be drastically influenced by placement, depending on the acoustic properties of the listening room. Typically, the optimum location for a subwoofer is tucked away in a corner of your listening room. This location will usually offer the greatest output levels and optimum low frequency extension. The worst location for a subwoofer is typically far away from any walls, and close to the center of your room. When using a pair of Velodyne subwoofers in stereo, it is preferable to place each subwoofer by the satellite of the same channel. Typically, a minimum distance of 4 to 5 feet from your TV to the subwoofer will be adequate to avoid any magnetic interference. Do not place the cabinet next to sources of heat such as furnace registers, radiators, etc. Do not place the unit near sources of excessive moisture, such as evaporative coolers, humidifiers, etc. The power cord should be routed in such a way that it will not be walked on, pinched, or compressed in any way that could result in damaging the insulation or wire. Installation Your new DLS subwoofer system provides for a number of installation options. Read all the installation information below in order to determine which installation option is best for your system. Remember to perform all installation procedures with system power turned off. Inputs Your new subwoofer is equipped with both speaker-level and line-level inputs. Use the RCA/Phono type "INPUT" jacks when connecting your subwoofer to a pre-amp, signal processor, or line-level crossover. The "SPEAKER LEVEL-INPUT" jacks connect directly to the speaker outputs of a integrated amplifier or receiver. Your amplifier section will notice no additional loading effects when you use these inputs because of their high impedance. [. . . ] To bypass the subwoofer's internal crossover when the unit is being fed a low pass signal from another crossover, simply locate the switch marked "SUBWOOFER DIRECT/INTERNAL X-OVER" on the rear panel of the subwoofer and set to the "SUBWOOFER DIRECT" position. If not using an external crossover, you should use the built-in crossover for optimal performance. When using a single channel input signal (such as a surround sound processor's subwoofer out, or LFE), the auto on/off circuit sensitivity will be affected. When one input channel is used instead of two, the unit will see lower signal levels present at the inputs. [. . . ]

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