Velodyne Impact Series - Manual (Page 12)

www.velodyne.com 6 - Impact Series User’s Manual
5) VOLUME LEVEL knob - Use this knob to adjust the output level of the subwoofer.
(6) LOW-PASS CROSSOVER - Use this knob to select the high-frequency range at which you wish to
cutoff the signal to the subwoofer.
(7) POWER INDICATOR - Red: Unit is in standby mode. Green: Unit is in operation mode. (automatically
turns to STANDBY mode if no signal for eight minutes)
REAR PANEL CROSSOVERS
Reciever/Processor Subwoofer Outputs
Your new subwoofer is equipped with both speaker-level and line-level inputs. Use the RCA/Phono type
“INPUT” jReceiver/Processor Subwoofer Outputs The Velodyne subwoofer is designed to operate using the full
range audio signal for input when using the built-in crossover. Many home theater processors/receivers (Dolby
Digital™, DTS™, THX™) have a “subwoofer out” jack (sometimes labeled “LFE”) that is internally filtered,
settable at the receiver/processor, and designed to be used with a powered subwoofer. In some installations,
it may be beneficial to use BOTH the Velodyne crossover and the receiver/processor crossover, resulting in
a steeper ultimate crossover slope. 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 crossover in either the processor or your Impact subwoofer, or simply setting one crossover to a
higher frequency (such as 120 Hz) will restore maximum performance.
(Refer to Figure 2a Line-Level Subwoofer Connection Diagram and Figure 2b Speaker-Level Subwoofer
Connection Diagram, pages 7 and 8 for connection diagrams.)