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the curves intersect at the -10 dbv point. Looking at the 1:1 line, you can see if an input signal is at the -
20 dbv level (slightly soft volume wise) it will come out also at -20 dbv. Thus no change. If the unit is
set for 10:1 compression, the same -20 input will come out at about -11 dbv as shown in the diagram
below. Thus this signal is boosted about 9 db. Likewise, if the input signal goes up to 0 dbv, the output
will be -9 dbv. Thus for an input change from -20 dbv to 0 dbv (a 20 db change) the output only changed
2 db (-11dbv to -9 dbv). This results in soft conversations being boosted to a normal level and loud
special effects being reduced to a normal level.
With the SVS-4 set to 1:2 expansion, if the input makes the same -20 dbv to 0 dbv change as above, the
output now goes from -30dbv to +10 dbv. This is a 40 db output change for a 20 db input change. This
results in soft sounds, including tape hiss and soft conversations, becoming even softer and loud special
effects becoming even louder.
Volume Stabilizer Input / Output Curves
Composite to S-Video Conversion
The SVS-4 has special circuitry to convert the composite video inputs to the S-Video outputs. The
SVS-4 sends the original composite and the generated s-video signal to both sets of outputs. However, if
you feed the selected input with a s-video signal, the SVS-4 only sends the s-video signal to the output.
Note: Because the S-Video signal is generated from the composite video signal, the quality
of the converted S-Video signal will not be as good as a true S-Video signal. For best
picture quality use the original S-Video or composite video signals.
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General