Manufacturer Description:

Module A-160-5 is a voltage controlled clock multiplier. The incoming
clock signal (socket Clock In) is multiplied by a factor that depends
upon the control voltage on socket CV In (0...+5V) and the position of
the Mode switch. The multiplied clock signal is available at the socket
Clock Out. According to the position of the Mode switch different clock
multiplying factors are assigned to the control voltage. With 0V CV no
clock output is generated. This state is indicated by "all LEDs off".
With increasing CV integer factors (left position of the mode switch),
power of two factors (middle position) or a mix of both (right position)
are obtained. Nine LEDs are used to show the currently selected
multiplying factor. In addition two LEDs are used to display the
incoming and outgoing clock signal.



A manual control is used to adjust the clock multiplication factor
manually without the need of an external control voltage. The voltage
generated by this control ("Manual") is normalled to the CV In socket.
As long as no plug is inserted into the CV In socket the clock
multiplication factor is adjusted by means of the manual control knob
and displayed by the LEDs. For dynamic applications (like the ratcheting
function described below) the manually generated CV is overwritten by
the external CV which has to be fed into the CV In socket.



The module can be used for all kind of clock multiplying applications.
One important example is the generation of so-called ratcheting
sequences. The band Tangerine Dream is famous for this kind of
sequences. A normal sequencer generates only one gate signal per step. A
ratcheting sequence may have also more than one gate pulses per step.
This function can be obtained by using the A-160-5: one CV output of the
sequencer is used to define the number of gate pulses per step. If the
control of the step in question is fully CCW the generated CV is 0V and
no gate signal is generated (mute of the step). When the control of the
step in question is turned clockwise one, two or more gate pulses are
generated depending upon the position of the mode switch and the voltage
generated by the CV at this step.



Technical note: Due to the nature of clock multiplying it takes a few
input clock pulses until the clock output is stable. One has to average a
few input clock pulses to generate the multiplied clock output signal.
Even when the input clock frequency changes it will take a few cycles
until the output clock signal is correct as the module cannot forsee the
future of the clock input signal. The generated clock output signal is
derived from the last few cycles of the clock input signal. Consequently
the module should be driven only by a clock signal with constant or
slowly changing frequency.

Product Specs

Condition
Brand New (New)
Brand New items are sold by an authorized dealer or original builder and include all original packaging.learn more
Brand Doepfer
Model A-160-5 Voltage Controlled Clock Multiplier / Ratcheting Controller
Categories Modular Synths, Eurorack
Made In Germany

Jeffrey K. - January 28, 2020

George K. - January 27, 2020

Good communication from seller; item shipped and arrived promptly

Ge R. - January 26, 2020

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Doepfer - A-160-5: Voltage Controlled Clock Multiplier / Ratcheting Controller
$124
+ $5 Shipping