Doepfer A-127 Triple VC Resonance Filter - Manual (Page 6)

A-127 Triple VC Resonance Filter System A - 100 doepfer
6
If the module has been re-configured to be a low
pass filter, control 6 boosts the frequencies around
the filter cut-off point (see also the A-120 and A-122
low pass filter modules). Using the filter at high reso-
nance to produce its own pitched tone (self-oscillation)
isn’t possible with this module.
7 Audio Level
Attenuator 7 adjusts the amount of the signal from
each of the filters to be fed into the Mix signal at
output $.
H For modules manufactured until end of 1998
control 7 affects both the corresponding indivi-
dual output § and the mix output $. For modu-
les manufactured 1999 and later control 7 af-
fects only the mix output $, but not the single
outputs §.
8 Original
Whatever original signal was present at socket ! can
also be added into the internal mixer. The amount of
the original signal fed into the mix output signal is set
by attenuator 8.
H The module is set up at the factory so that
attenuator 1 doesn’t have any effect on the
Original signal level 8, so the effected sound
(3 Filters) and "Original" sound can be con-
trolled separately, by 1 and 8 respectively
(see fig. 1). It’s possible to change this by
altering a jumper on the mixer circuit board
(see chapter 7, Appendix), so that both the
levels (Filter + Original) can be controlled by
attenuator 1 .
5. In- / Outputs
! Audio In
This is the socket into which you connect the audio
signal which you want to be filtered.
" ext. CV
Socket " is the control voltage input, used for modu-
lating the filter via external voltage control (ADSR,
LFO, sequencer - see chapter 7, User Examples).
This is a normalled (switched) socket. If no connec-
tion is made, the internal LFO serves as the modula-
tion source instead.