Rupert Neve Portico 5043 - Compressor / Limiter Duo - Manual (Page 10)

FEATURES
9
BUSS INPUT BUTTON
Routes the BUSS inputs to the compressor. Each of the "A" and "B" units has a choice of LINE or
BUSS input. The LINE inputs are transformer-balanced bridging inputs. The BUSS inputs are
configured as balanced and floating inputs that, when fed from a source impedance of 10,000 ohms,
will produce unity gain, (Compressor-Limiter switched out) overall.
Several modules within the Portico™ Range are fitted with a "TO BUSS" switch. The output from
this circuit is intended to provide an input to Portico™ modules with Buss inputs. Any number of
modules may be fed to the Buss Input to provide high performance mixing that is intended to
provide sub group mixing in a console configuration.
COMPOSITE OPERATION
Cascading the two sections, A and B, of the Portico™ 5043 Compressor Limiter provides
extremely powerful and comprehensive control of dynamic range. When an external audio
connection is made from the output of one channel to the input of the other, the overall
compression characteristics become a composite of the two. For example, channel A may be set up
as a low ratio compressor and channel B may be set up as a high ratio compressor or limiter, to
produce a powerful composite characteristic (as shown in the graph below)
-30
+10
-28
-26
-24
-22
-20
-18
-16
-14
-12
-10
-8
-6
-4
-2
-0
+2
+4
+6
+8
dBu
-30 +20 -25 -20 -15 -10 -5 +0 +5 +10 +15
dBu