User manual
delayed signal is available after each chip. A
high signal–to–noise ratio is achieved thanks
to signal companding (dynamic compression
at the input matched with dynamic expansion
the outputs ensure optimal conditions for the
BBD chips to process the signal.
In general, the incoming signal must be band–
limited in order to prevent high frequency com-
ponents from interfering with the clock. Simi-
is processed helps to eliminate high frequency
artifacts introduced by the BBD chips. In Sara-
the current clock frequency, thus offering maxi-
mum bandwidth with minimal artifacts.
An internal feedback loop taken from the last
tap allows for the classic echo effect with ad-
ditional coloration offered by an adjustable tilt
externally while a crossfading circuit offers a
continuous mix of the input and the signal from
the last tap.
2. The signal you wish to process should be
patched to the input jack
1
. The level knob
2
above controls the amplitude with the in-
put indication multicolor LED
3
providing
visual feedback. The outputs from individual
taps are labeled t
1
, t
2
, and t
3
, respectively:
4
,
5
,
6
. The central large t
3
time dial
7
allows for precise setting of the overall delay
time of the three stages, from about 20ms to
over 1.5s. The delay time can be modulated
via CV patched into the corresponding jack
below
8
or synchronized to an external clock
source via the sync input
9
. Since all three
BBD chips share a common clock, using the t
1
and t
2
outputs will provide signals delayed by
1/3 and 2/3 of the t
3
time, respectively. The
mixed output
10
delivers a continuous mix of
your input signal and the t
3
tap. The balance is
controlled both by the effect knob
11
and the
CV patched into the mix cv jack
12
. The sig-
nal from the ext feedback loop input
13
is
mixed with the input of the delay line. This jack
is normalized to the t
3
output, however, the
connection can be broken by sending one of the
tap outputs to an external processor (such as
via the ext feedback loop input. Regardless
of the actual feedback signal path (internal or
external), the signal always passes through
tone slider
14
. The amount of feedback is
controlled by the fbck slider
15
. The bbd off-
range led
16
indicates that the delay time set
by the combination of the t
3
time dial and the
incoming CV signal exceeds the time range of
the module. When the CV inputs are in use, the
corresponding knobs act as offsets.
INPUT SIGNAL
Sarajewo is AC coupled and accepts modular
level audio signals (10Vpp and higher). The
level knob attenuates the input to prevent
distortion (indicated by the color of the input
indication LED). When it turns from green
to yellow and then to red, it means the signal
is too hot and the BBD chips may introduce
audible distortion.
3