This manual covers a single module: 2hp Delay.
Even though it’s an effect, it can be very useful for building melodic structure, not just ambience. In a Eurorack patch, delay often becomes a rhythmic pitch-support tool: it can create repeated notes, implied counterpoint, evolving arpeggio-like patterns, and sustained harmonic beds from short melodic phrases.
The Delay is a 2 HP Eurorack delay processor with:
From the manual:
A delay doesn’t generate pitch by itself, but it can strongly shape melodic content in these ways:
Feed a melodic voice into Delay and set:
This gives you repeating notes behind the original melody, making a simple sequence feel more complex and musical.
A very short phrase from a sequencer can become a fuller melodic statement when delay repeats extend it. This is especially useful if your patch has:
The delay fills the gaps, making sparse lines sound intentional and composed.
Set the TIME so the repeat lands after the original phrase. With moderate feedback, the repeats act like an answer to the played line. This works well for:
Longer delay times with lower mix can create a second layer that overlaps with new notes. If your incoming melody changes pitch while older repeats are still audible, you get the effect of multiple melodic lines interacting.
With high FDBK and a longer TIME, a monophonic sequence can smear into a sustained texture. If the original line moves through scale tones, the delay can create overlapping pitch layers that imply harmony.
Because TIME, FDBK, and MIX all accept CV, you can animate the delay in sync with the rest of the patch:
This is where the module becomes especially musical.
Patch:
Settings:
Result: - A lead becomes wider and more expressive without losing definition.
Good for: - techno hooks - ambient motifs - Berlin-style step melodies
Feed an arpeggio or stepped sequence into Delay.
Settings:
Result: - The arp sounds denser and more interlocked. - Repeats fill empty spaces between notes.
Use a medium-long TIME so each note repeats after one or two steps of the sequence.
Result: - Notes from earlier in the melody overlap with current notes. - This creates a simple canon or round effect.
This works particularly well with: - quantized diatonic melodies - pentatonic sequences - simple 3–5 note motifs
Use:
Feed in occasional notes or a sparse sequence.
Result: - A melodic phrase turns into a sustained tonal cloud. - Very effective for ambient or intro sections.
Use external CV:
Result: - Certain notes become more echoed than others - Some repeats stack into phrases - The melodic texture changes over time without changing the source sequence
This is the most compositionally significant control.
It sets the interval between repeats. For melodic use:
If you tune the TIME by ear relative to the tempo, echoes can land in useful subdivisions. Even though this manual does not mention clock sync, you can still manually dial in timings that feel like:
Using CV on delay time can create: - shifting rhythmic relationships - pitchy/glitchy time changes depending on the source and modulation depth - expressive transitions
For melodic patches, subtle modulation usually works better than extreme modulation unless you want unstable, tape-like or fractured effects.
This controls how many repeats you hear.
For melody:
Use higher feedback on sparse sequences, lower feedback on dense ones.
If the incoming line is already busy, too much feedback can blur pitch relationships.
This is excellent for making only some notes “blossom” into repeating structures. For example:
That creates phrasing and hierarchy in a melody.
This determines how prominent the delayed signal is compared with the dry signal.
For melody:
One of the easiest ways to “arrange” the melodic space dynamically.
For instance:
Source modules needed: sequencer, oscillator/voice, envelope/VCA, Delay
Patch: - Sequencer pitch CV → oscillator pitch - Gate → envelope → VCA - Voice output → Delay IN - Delay OUT → mixer
Settings: - TIME: short-medium - FDBK: low-medium - MIX: low
Why it works: - Preserves punch - Adds repeated notes that reinforce the groove - Makes a 1-bar riff feel more active
Patch: - Quantized slow sequence → voice - Voice output → Delay IN - Delay OUT → reverb or mixer
Settings: - TIME: long - FDBK: medium-high - MIX: medium-high
Optional modulation: - slow LFO to MIX CV - very slow random to TIME CV
Why it works: - Notes overlap into suspended harmonies - A simple melodic line becomes a floating harmonic texture
Patch: - Voice → Delay IN - Accent CV or envelope → FDBK CV
Settings: - TIME: medium - FDBK knob: low - MIX: medium
Why it works: - Only accented notes generate substantial repeats - Repetition becomes part of phrasing - Great for acid or sequenced electro lines
Patch: - Monophonic melodic voice → Delay IN - Delay OUT → mixer
Settings: - TIME: close to one beat or one step cycle by ear - FDBK: low-medium - MIX: medium
Why it works: - The repeat enters like a second player echoing the melody - Creates the illusion of polyphony from a single voice
Patch: - Send voice to Delay - Set MIX high or fully wet - Mix dry signal separately outside the module if possible
Why it works: - The delayed line acts like an independent melodic shadow - Very effective if the dry voice is centered and the delay is processed separately
Delay tends to reward simple melodic material:
If the source is too dense, the repeats may mask pitch clarity.
Because the module is not described as clock-syncable in the manual, treat TIME as a performance control. Sweep until the repeats sit in the groove.
The manual notes that feedback can go to infinity. That means this module can enter a self-sustaining state. Musically, this is useful, but in performance:
For melodic clarity: - modulate MIX first - then add selective FDBK modulation - use TIME CV more sparingly unless you want obvious time-warping effects
Installation note from the manual: - Red stripe corresponds to -12V - On the module, the ribbon should be connected with the red band facing the front
The 2hp Delay is best thought of as a melodic multiplier rather than just an effect. It helps create:
If paired with a sequenced oscillator voice, quantizer, envelope, and VCA, it can turn very minimal note material into something much more musical and emotionally rich.