Doepfer A-100(~ 40 MB) - Manual (Page 258)

A-119
Ext. Input / Envelope Follower
System A - 100 doepfer
4
As soon as the envelope amplitude exceeds the trig-
ger threshold T, the gate signal is output (see the black
arrows in Fig. 1d on the previous page). When the
signal drops below the threshold again, the gate signal
stops (see the white arrows in Fig. 1d).
4. Controls and indicators
1 Gain
This knob controls the amount of amplification the
external signal receives. This depends on the input
chosen:
• unbalanced input ! : 0 ... 20
• balanced input " :
0 ... 500.
2 Overload
LED 2 lights when the circuit is overloaded - that is,
when the amplified signal exceeds 10 V.
3 LED
The voltage of the envelope produced at output %
can be monitored with LED 3.
4 LED
LED 4 monitors the gate signal at output &.
5 Threshold
Control 5 is used to set the trigger threshold T,
above which a gate signal is generated (see Fig. 1c).
5. In / Outputs
! Asym. In
The 3.5 mm mono mini-jack socket ! is the A-119’s
unbalanced input, designed predominantly for line
level external audio signals and/or audio generated
within the A-100 system.
" Symm. In
The 6.3 mm stereo full-size jack socket " is the
A-119’s balanced input, for low level signals such as
from a microphone, electric guitar, and so on.
H Because there’s just one gain control for two
inputs, only use one input at a time. If you
use both at once, their signals will be mixed
in a 1:25 ratio.