
9MicroVee X SeriesUser’s Manual
Low-pass Crossover - 40 to 200 Hz
As noted above, all inputs sum the left and right channels together, with the resulting signal passing through an adjustable
low-passcrossoverbeforebeingamplied.Thecrossovercontrolallowsyoutoadjusttheupperlimitofthesubwoofer’s
frequency response from 40 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 that have greater low frequency out-
put. If you’re using larger speakers, you might start with this control set lower (such as 80 Hz). If using the crossover control
in A/V receiver or processor and connecting to LFE input, please use the SUBWOOFER DIRECT (LFE) button.
Receiver/Processor Subwoofer Outputs
Velodyne Acoustics MicroVee X Series subwoofer comes equipped with both speaker-level and line-level inputs. Use the
RCA/Phonotype“INPUT”Receiver/ProcessorSubwooferOutputs.VelodyneAcousticssubwoofersaredesignedtooperate
using the full range audio signal for input when using the built-in cross- over. Many home theater processors/ receivers
(DolbyDigital™,DTS™,THX™)havea“subwooferout”jack(sometimeslabeled“LFE”)thatisinternallyltered,settableat
thereceiver/processor,anddesignedtobeusedwithapoweredsubwoofer.Insomeinstallations,itmaybebenecialtouse
BOTH the Velodyne Acoustics 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
MicroVee X Series subwoofer by pressing the subwoofer direct, or simply setting one crossover to a higher frequency (such
as 120 Hz) will restore maximum performance.
Phase Adjustment 0° to 180°
This control allows you to switch the phase of the subwoofer’s output signal from 0° to 180° to correct for any possible
mismatchandresultingcancellationbetweenthesubwooferandyourmainspeakers/amplier.Inordertoadjustthis,
simply listen to the system with music playing, then switch between 0° to 180° button from one position to the other and
listen for a change in mid-bass frequency output. The correct position will have a greater amount of apparent mid bass
frequency output.
Auto Turn on Function
The subwoofer will turn itself on automatically when an audio signal is present. If no signal is present for approximately ten
minutes, the unit will switch to standby mode (Red LED). While in standby mode, your subwoofer will draw very minimal
power.
Warning:
If the Sub-Out channel signal level from your receiver is too weak, this feature will not operate properly and shut the sub-
woofer off while you are listening to it. To correct this, see the Volume Control section on the previous page.