System a - 100, A-199, Controls – Doepfer A-199 Spring Reverb User Manual
Page 3: Doepfer
doepfer
System A - 100
Spring Reverb
A-199
3
3. Controls
1
Level
Attenuator 1 controls the level of the input signal fed
into socket !.
2
Feedback
Knob 2 controls the share of the reverb signal that
is fed back to the input. Feedback can be adjusted as
far as self-oscillation (as for some filter modules of
A-100, e.g. A-120/121/122/123). The self-oscillation
behaviour depends upon the properties of the spring-
system.
H
If external feedback is used this control acts as
an attenuator for the external feedback signal. In
this case the reverb output § is passed through
one or more A-100 modules and then fed back
to socket " (refer to chapter 5: user examples).
3
Emphasis
This control enables the adjustment of the accentua-
tion of middle frequencies (around ~
2kHz, see fig.
1). This gives more “pressure” or “presence” to the
reverb effect.
Fig. 1: Effect of emphasis function
4
Mix
This control adjusts the relation between original
and reverb signal appearing at output $.
300 Hz
1.0 kHz
10 kHz
Pay attention to the notes concerning the posi-
tion and assembly of the reverb system at the
end of this manual.
To minimize hum noise we recommend the
usage of the special A-100 power supply with
ring core transformer (A-100PSU2) instead of
the standard power supply.