Doepfer

hello list,

here are a few examples recorded with the a188/2.
time was very short, so these examples are of rather
simple nature, and they are all mono.
more examples will follow, promised.


1.
a simple synth sequence is used as audio input.
in the first half of the recording you hear the
"prepatched" feedback connection (396 stages output).
in the second half the 3328 stages output is used as
feedback input. the a188/2 output is filtered by a
24db lowpass filter (a109) to remove the clock noise.

http://www.selfoscillate.de/a100files/a188-2-feedback-396-3328.mp3


2.
the 2790 stages output is fed into a modulated a101/1 filter
(set to lowpass), the filter output is then used as
a188/2 feedback input.

http://www.selfoscillate.de/a100files/a188-2-feedbackloop-1.mp3


3.
this is some kind of reverse delay effect, as requested by florian.
first you hear the bbd output set to "original" (fully
counterclockwise). then the output is set to "bbd"
(fully clockwise).

http://www.selfoscillate.de/a100files/a188-2-revdelay-1.mp3


in the last two examples some kind of very high clock noise appears,
even when using a clock filter at the bbd output.
the mn3011 bbd output is composed of six unsymmetrical outputs
mixed together. other bbd chips with a single output can be trimmed
to have minimum clock feedthrough, but the six outputs of the
mn3011 cannot be trimmed. this means that the a188/2 needs
stronger filtering than the a188/1 models, if the removal
of all the noise is needed.


best wishes

ingo