BSS Audio DPR-901II Owner's Manual - Manual (Page 18)

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DPR-901ii
Using the DPR-901ii
5.0 Using the DPR-901ii
Refer to the block diagram in Fig 5.1opposite.
We recommend you familiarise yourself with the normal above thresh-
old mode of operation before exercising the below threshold configura-
tion. The latter is more subtle in effect, and requires more precise adjust-
ments of level, especially in expansion.
For high sound quality it’s important that you set the input drive cor-
rectly, particularly when using the expansion mode. As is common for
all electronic equipment, care must be taken to ensure that the input
signal does not exceed the maximum internal clipping level (especially
when boosted by expansion) and the output headroom meter is therefore
an important display. When setting up you must ensure that on one
hand, your maximum signal peak does not exceed the ‘clip’ scale point
and on the other, is not so low that it’s wasteful of dynamic range. As the
optimum drive level depends on the exact processing applied, it should
be re-checked after initial setting and any subsequent fine tuning.
To set up the filter controls, the side chain listen switch can be used to
listen in to the actual signal that will be subtracted or added by the VCA.
This is especially useful if more than one band of processing is being
applied, as the overall effect of the filtering can be heard, before the
dynamic activity is applied. Only the side chains of those bands that are
selected IN will be routed to the output. NOTE: If no bands are selected
IN then nothing will be heard when the side chain listen switch is
pressed.
With the split switch in the MAIN position, the DPR-901ii is configured
as a single four band unit, and the input signal should be plugged into
the MAIN input, and the output should be taken from the MAIN output.
Side chain listen signals for all bands are routed to the MAIN output. The
relay bypass signal is routed from the MAIN input to the MAIN output.
The output signal from bands 1 & 2 is available at the SPLIT output, but
the SPLIT input is inoperative.
With the split switch in the SPLIT position, the DPR-901ii is effectively
split down the middle, and is configured as two independant two band
units. The frequency ranges remain unchanged.
For bands 1 & 2, the input signal should be plugged into the MAIN
input, and the output signal should be taken from the SPLIT output.
For bands 3 & 4 the input signal should be plugged into the SPLIT input,
and the output taken from the MAIN output.
Side chain listen signals are routed to their appropriate output, and the
relay bypass directly connects the MAIN input to the SPLIT output, and
the SPLIT input to the MAIN output.