Dub techno uses only a few elements filtered down low and sparse, filling the space with delays and reverbs

The defining compositional rule of dub techno is restraint: use only a few elements (a couple of chords, a kick, a hi-hat, optionally a sub), filter them down low and place them sparsely, then fill the space between hits with wide stereo delays and reverbs, and tweak those filters and space effects throughout the track. The ‘feel like they’re hiding’ quality comes from low filter cutoffs and short envelopes rather than from removing elements. Movement and evolution come from automating filter cutoffs and send levels — not from adding new musical material. Space is treated as an instrument in its own right: the delay trails and reverb tails carry as much of the track as the notes.

Examples

A 5-channel template (kick, sub from the same kick, off-beat open hat, two chords) plus two effect sends; everything driven by simple MIDI and shaped almost entirely by FX and automation.

Assessment

Build a 4-bar dub techno loop from only a kick, one chord, and one send effect, then describe how you would automate the filter cutoff to grow a 32-bar section without adding any new instrument.