34
See
Rear Panel Display
diagram with numbered controls.
Fig. 15
shows just the push-button section under review.
Fig. 15
We will go over the push buttons one group at a time to show how to use them to configure a line
array without the requirement to use a PC and a LAN network to connect to the Versarray™ Pro 218
Sub.
Section 1
Volume
Up and Down buttons provide for changing the Level of the audio signal.
Factory default is 0 dB, with a range down to -6 dB in 2 dB steps.
These Level choices become handy when there is a need to adjust the level of the Subs in a
repeatable manner, when more Subs are used than are needed to balance the number of VR 112
Pro’s present. The normal ratio of Subs to VR 112 Pro’s is one Sub for every two VR 112 Pro’s. This
results in Sub levels that are slightly hotter than the VR 112 Pro units, but still sound totally natural
with difficult program material such as acoustic guitar, female vocals and other sounds that sound
poor with too much bass present.
If a Sub is being used with just one VR 112 Pro, then changing the Volume down to -6dB will balance
the bass level back to the correct ratio.
Section 2
Sensitivity
Click to choose buttons allow selection of 6 dBu or +12 dBu sensitivity of the Analog input
(XLR in) of the Versarray™ Pro 218 Sub system. The Factory default is +6 dBu, and the gain
structure of the rest of the DSP based preamp system has been based on this sensitivity level. If the
+6 dBu is too sensitive for your requirements, then you can select the +12 dBu option instead with no
penalty in performance or noise.
With the Input Sensitivity set to +6 dBu, it takes 1.75 VAC RMS to drive the Versarray™ Pro 218 Sub
system to full power output on music. That would change to 3.5 VAC with a change of the Sensitivity
to +12 dBu.