Xaoc Devices HRAD Operator's Manual page 6

block
diagram
to the vca out socket in Praga. This same sig-
nal is used for the auxiliary send (post fader).
However, before the a/b knob on Praga, it
may be replaced by its processed version (or
any other signal) thanks to the aux ins inputs
in Hrad. It then goes through one of the four
additional VCA cores (one per Praga channel)
where the send level can be controlled by the
external CV plugged into the corresponding
aux cv input.
The voltage response of this VCA is the same
as in Praga (please refer to its manual for de-
tails). The CV inputs are internally normalized
to 8V.
fig. 4: signal flow
control
pan vol
signal
input
Praga
chain chain
input output
AUX
sends
aux
vu
VCA AUX
return A
output
AUX
return B
x4
From the VCA, the signal passes through the
bipolar aux attenuator on Praga where one
of the auxiliary channels (a or b) may be
selected, and the amount of send may be set
manually. The mixed aux send signal from all
four channels is available at the aux send
socket in Praga.
When a return signal from external process-
ing is plugged into the stereo aux return
pair in Praga, it goes again to Hrad, where
it may be attenuated with the corresponding
aux ret (a or b) knob. From the attenuator,
the signal is routed to the stereo summing bus
in Praga.
cue
input
stereo
output
AUX
CV input
AUX
insert
Hrad
6
phones
output
cue
solo
main
output
vu
x4
x4
mute