User manual VELODYNE MINIVEE

[. . . ] CAUTION RI S K O F EL E CT R I C SH O C K DO NOT OPEN Ca u ti o n To reduce the risk of electric shock, do not remove cover (or back). The lightning flash with arrowhead symbol is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. TM The exclamation point symbol is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the subwoofer. 1. Read Instructions -- All safety and operating instructions should be read before the subwoofer is operated. Retain Instructions -- The safety and operating instructions should be retained for future reference. [. . . ] Simply move the switch to SUBWOOFER DIRECT to disengage the built-in crossover. For all other installations which do not have a separate electronic crossover, we recommend you leave the switch set to INTERNAL X-OVER to provide optimum performance. Auto Turn on Function With this function in the "auto" position, your subwoofer can be safely left with the main power switched on continuously. The subwoofer will turn itself on automatically when an audio signal is present. If no signal is present for approximately 10 minutes, the unit will switch to standby mode. This function can be disabled by leaving the switch in the "on" position. INSTALLATION Inputs Your new subwoofer is equipped with speaker-level and line-level inputs. Use the LINE LEVEL jacks when connecting your subwoofer to a preamp, signal processor, line-level crossover or receiver with pre-amp level outputs. The SPEAKER LEVEL jacks connect directly to the speaker outputs of any amplifier, integrated amplifier or receiver. Your amplifier section will notice no additional loading effects when you use these inputs due to their very high impedance. Do not use both LINE LEVEL and SPEAKER LEVEL connections simultaneously!Volume Control This control allows you to balance the output from the subwoofer to the main speakers/amplifier in your system. This control should be set to achieve similar output level from both the main speakers and subwoofer when listening to music. A good starting point for the volume control is 3 or 4 dots from minimum. Low-pass Crossover - 40 to 120 Hz All inputs sum the left and right channels together, with the resulting signal passing through an adjustable low-pass crossover before being amplified. The crossover control allows you to adjust the upper limit of the subwoofer's frequency response from 40 to 120 Hz. The 4 5 Power Switch The master power switch is located on the lower half of the unit. This switch should be set to position 1 (up) for on, and 0 (down) for off. If the unit is to be left unused for an extended period of time, the master power switch should be turned off. Subwoofer Outputs The Velodyne subwoofer is designed to operate using the full range audio signal for input when using the built-in crossover. Some processors/receivers have a "subwoofer out" jack that is internally filtered and designed to be used with a conventional amplifier and speaker. In some rare cases, combining both an external crossover and the one internal to the subwoofer may result in low output and increased noise. In these installations you may need to bypass the internal crossover in either the processor or Velodyne subwoofer. [. . . ] 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. P TROUBLESHOOTING AND SERVICE If you should experience a problem with the operation of your subwoofer, please check all of the following before seeking service. Verify that the unit is plugged in, power outlet used is active and supplying proper voltage. Have all controls on the subwoofer (volume, crossover, phase, etc. ) been properly set?If unit has been running at high levels for an extended period of time, one of the protection circuits may be engaged. [. . . ]