User manual VELODYNE ULD-18

[. . . ] Read and follow the instructions below to insure safe and proper system operation. 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. [. . . ] To avoid damage to your main amplifier, be sure to maintain correct polarity when making all connections. Red (positive) to red, and black (negative) to black. Be sure that all connections are tight, and that there are no loose strands or frayed wires. Power Switch The master power switch is located on the lower right half of the unit. This rocker style switch is the main on/off for the unit. This switch should be set to position 1 for on (up), 0 for off (down). . www. velodyne. com SPL-R User's Manual 4 A W o r d A b o u t Yo u r R e c e i v e r ' s C r o s s o v e r and the SPL-R Crossover Your Velodyne SPL-R subwoofer is designed to operate using the full range audio signal for input when using the built-in crossover (controlled by the dial on the back panel). Many home theater processors/receivers (Dolby Digital®, DTS®, THX®) have a "subwoofer out" jack that performs this same function and are designed to be used with a powered subwoofer. In these installations, you may want to bypass the crossover in either the processor or the Velodyne subwoofer. In some cases, you may want to use BOTH crossovers. To do this, you can use both your processor's crossover and the one internal to the Velodyne sub. You should stagger the frequencies, (i. e. , 120 Hz subwoofer, 80 Hz processor) for best results. 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 "LOW-PASS CROSSOVER" on the rear panel of the subwoofer and turn it counterclockwise to the leftmost position. The unit will remain in this mode until the POWER button is pressed again. power down) the unit, turn off the power switch on the back panel. MUTE . This button mutes the subwoofer. The light on the subwoofer will blink slowly if the unit is muted. To unmute the subwoofer, press the MUTE button again. www. velodyne. com SPL-R User's Manual 6 EQ This button automatically EQs the subwoofer using a 6-band internal graphic equalizer. To use this feature, first plug in the supplied microphone into the Mic Input jack on the back panel of the subwoofer and place the mic in your preferred listening position. Then, by pressing EQ on the remote, the subwoofer emits 12 "sweep tones" that cover the frequencies between 20 and 150 Hz. After the sweeps are complete, the unit saves its EQ settings and returns to normal operation. In order to avoid accidentally activating the EQ feature, you will need to hold down the EQ button for 1 to 2 seconds before the EQ sweep tones activate. NOTE: Each time the EQ feature is utilized, the EQ settings for the SPL-R are reset. As a preset is chosen, the light flashes the corresponding number of times. The presets provide the following characteristics for bass reproduction: Movies: Maximum output and impact for explosions and other action adventure movie content. [. . . ] Has the power button been depressed on the remote?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. [. . . ]