User manual VELODYNE VMS-8 REV A

[. . . ] VMS-8 Subwoofer USER'S MANUAL Small, High-Performance Subwoofer . www. velodyne. com VMS User's Manual i Ta b l e o f C o n t e n t s Congratulations . . 11 . www. velodyne. com VMS User's Manual ii Congratulations! Congratulations on your purchase of a Velodyne VMS subwoofer system. This system represents the state-of-the-art in home audio reproduction and will provide you with years of listening pleasure when properly cared for. Read and follow this instruction manual to insure safe and proper system connection and operation. [. . . ] 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. While in standby mode, your subwoofer will draw very minimal power. This function can be disabled by leaving the switch in the "inactive" position. Warning: If the Sub-Out channel signal level from your receiver is too weak, this feature will not operate properly. See VOLUME CONTROL section on previous page. Power Switch The master power switch is located on the lower half of the unit. This rocker style switch is the main on/off for 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. In some installations, simply setting one crossover to a higher frequency (such as 120 Hz) will restore maximum performance. To bypass the subwoofer's internal crossover when the unit is being fed a filtered signal from another crossover, simply locate the switch marked INTERNAL X-OVER/SUBWOOFER DIRECT on the rear panel of the subwoofer and set to the SUBWOOFER DIRECT position. This will eliminate the internal crossover from the signal path. Note: If not using an external crossover, you should use the built-in crossover for optimal performance. Line-Level Connection - Option A Figure 1 shows connection from your home theater receiver to the LFE input on the back of your subwoofer. When the subwoofer is installed in this fashion, all of the low frequency information from your "LFE Out" or "Subwoofer Out" on the back of your receiver will pass into your Velodyne subwoofer. This connection is the most common connection method when using your subwoofer with a 5. 1 receiver. (Cable needed: 1 mono RCA cable. ) . www. velodyne. com VMS User's Manual 4 Figure 1. Installation Using LFE Line-Level Inputs . Note: If not using an external crossover, you should use the built-in crossover for optimal performance. When using a single channel input (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. [. . . ] The following conditions require service by a qualified technician: 1. The unit does not appear to operate normally or exhibits a marked change in performance 3. Some part of the chassis or circuitry is physically damaged VMS User's Manual . www. velodyne. com 9 Specifications Specifications Woofer VMS-8 8" forward firing (6. 5" piston diameter) 2000 watts Dynamic 1000 watts RMS Power 80 Hz (6 dB/octave) 40 Hz-120 Hz 12 dB octave initial, 48 dB octave ultimate 26-120 Hz (+/-3 dB) <5% (typical) 204 oz. (12. 7 lbs) 2. 5" Dual Layer inner/outer wind Gold plated line-level and speaker-level Line-level, 80 Hz up 0° or 180° No 10. 063" x 10. 375" x 12. 75" (27 x 26 x 33 cm) Sealed enclosure Three years (electronics - parts and labor) Five years (drivers - parts and labor) 35 lbs. [. . . ]