User manual VELODYNE VRP-1200 REV B

[. . . ] Packing this unit in any other carton may result in severe damage when shipping. Record the serial number in the space provided on page 13 for future reference. Product Features · A single driver consisting of either: - 10" (8. 2" piston diameter) subwoofer with 2. 0" high-temp voice coil and 40 ounce motor structure or, - 12" (9. 7" piston diameter) subwoofer with 2. 0" high-temp voice coil and 40 ounce motor structure · Adjustable (50 to 200 Hz) low-pass crossover with a 12 dB/octave slope · Line-level (RCA) inputs · Speaker-level inputs and outputs with spring loaded terminals · Signal sensing auto turn on/off · Variable volume control · Selectable phase control (0° or 180°) · Green power on/ Red power standby mode indicator LED Prepare for Installation Your new Velodyne subwoofer 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 to prevent possible damage. . www. velodyne. com VRP User's Manual 1 Placement True subwoofers operate at extremely low frequencies that are primarily omni-directional. [. . . ] Your amplifier section will notice no additional loading effects when you use these inputs due to their very high impedance. If using the SPEAKER LEVEL inputs, you DO want to connect both channels, since different bass information might be present in each channel going to your main speakers. Do not use both LINE LEVEL and SPEAKER LEVEL connections simultaneously!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 all connections are tight, and that there are no loose strands or frayed wires. Volume Contr ol 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 levels from both the main speakers and subwoofer when listening to music. A good starting point for the volume control is two or three graduations from minimum. Low-pass Crossover - 50 to 200 Hz As noted above, 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 50 to 200 Hz. The subwoofer's response will begin rolling off above the frequency you set this control to. You should set the crossover frequency to obtain a smooth and seamless transition from the subwoofer to the main speakers in your system. If your main speakers are smaller units with limited low frequency output, you may wish to choose a higher frequency (such as 100 - 120 Hz) than you would with larger speakers which have greater low frequency output. With larger speakers, you might start with this control set lower, such as 80 Hz. . www. velodyne. com VRP User's Manual 3 Phase Adjustment - 0°/180° This control allows you to "reverse" the phase of the subwoofer's output signal 180° to correct for any possible mismatch and resulting cancellation between the subwoofer and your main speakers/amplifier. To adjust, simply listen to the system with music playing, then depress the phase switch from one position to the other and listen for a change in low frequency output. The correct position will have a greater amount of apparent low frequency output. For all installations, experiment with the phase switch to determine the setting (0 or 180 degrees) that produces the most bass. If the settings sound similar, we recommend the "0" position. A u t o Tu r n o n F u n c t i o n The subwoofer will turn itself on automatically when an audio signal is present. If no signal is present for approximately eight minutes, the unit will switch to standby mode (Red LED). While in standby mode, your subwoofer will draw very minimal power. . www. velodyne. com VRP User's Manual 4 R e a r Pa n e l C o n n e c t i o n s Figure 1. VRP Rear Panel Connections Figure 1 shows the connections on the rear panel of the VRP Following are brief descriptions . More detail of these connections can be found below: (1) SPEAKER LEVEL INPUT terminals - Connect these input terminals to the speaker output terminals of your amplifier or receiver. SPEAKER LEVEL OUTPUT terminals - The speaker-level signal to the front speakers is output from these terminals. [. . . ] VELODYNE is not responsible for defects which result from the use of an amplifier or controller other than the one originally supplied with the unit (subwoofer) or defects which result from modifications or repairs made by any component of the system by anyone other than a VELODYNE factory authorized service representative. This warranty is void if any repairs or service covered by the terms of this warranty are made to any component of the system by anyone other than a VELODYNE factory authorized service representative. VELODYNE is not responsible for damage caused by accidents, abuse, misuse, natural or personal disaster or unauthorized modification. The VELODYNE products are not intended for professional or commercial use and VELODYNE is not responsible for damage resulting from such use. [. . . ]