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I’ve been having a lot of fun with the DU-SEQ Eurorack sequencer lately. It’s become my go to sequencer for techno style, repetitive, atonal patterns, but the module can go far beyond a simple 1-8 step CV passage. The available CV input on the Direction/Address function can be modulated, dramatically altering sequence playback and step order.
Sequencers generally follow a simple pattern when they receive a clock signal, moving from the first to last step in the sequence and then looping back around to the beginning. Some sequencers allow for the direction of the sequence to be altered, playing the steps backward, alternating forward and backward, randomized or other, more complex patterns.
The DU-SEQ offers CV control over the direction or stage selection of the sequence, via the Dir/Add button and input. When the button is off, the CV input expects a gate signal. When the gate is low, the sequence will play from left to right. When the gate is high, the sequence reverses. This can be used with clock dividers to create common sequence patterns, for instance a back and forth pendulum motion, or for much more complex passages where direction changing is less uniform. Combined with the halftime button and CV, this can be an incredibly musical function to experiment with.
When the Dir/Add button is depressed, the CV input switches functions. While a gate was used to modulate the direction, CV signals can be used to hop between steps. Each step requires an additional 1/2 Volt to move to the next step, up to around 4 Volts. Using an LFO, we can glide across the steps slowly to get a pendulum effect. With some noise or random voltages, stage selection becomes a bit more chaotic, while still being timed to the sequencer clock. We could even sequence our sequencer stages (trippy man…)
How are you creating complex and interesting sequences? Tell us about it in the comments!