Mannequins Three Sisters
Resonant triple filter bank with oscillation
10 HP Eurorack module
Three Sisters is a resonant multimode filter bank with three individually tunable filters that can operate as a formant filter or triple bandpass. It features self-oscillation capabilities and can function as a triple oscillator, with extensive CV control over frequency spacing and individual filter parameters.
Features
- Three resonant filters
- Individual filter outputs
- Mixed ALL output
- CV control over frequency and span
- Self-oscillation capability
- V/Oct tracking
Controls & Jacks (17)
- Span — Adjusts the relationship between the three oscillator/filter voices
- Centre — Sets the center frequency of the Centre band filter. Also acts as the master frequency control that shifts all three filter bands together.
- FM Attenuator — Attenuator for the Freq CV input. Controls how much external CV affects the filter frequency.
- Low Out 2 — Low frequency/filter output
- Quality — Controls the resonance/Q of all three filter bands. Higher settings produce sharper peaks and eventually self-oscillation.
- Centre In — Audio input routed exclusively to the Centre band filter.
- Centre Out 2 — Secondary Centre band output with inverted phase. Useful for creating notch responses when mixed with other outputs.
- Low Out 1 — Low frequency/filter output
- Span CV — Adjusts the relationship between the three oscillator/filter voices
- Freq CV — Controls the primary frequency/pitch of the oscillators
- Centre Out — Centre band filter output
- High Out 1 — High frequency/filter output
- Crossover — Audio input that crossfades between the Low and High filter bands, bypassing Centre.
- High Out 2 — High frequency/filter output
- All Out — Mixed output of all three voices
- Quality CV — CV input for external modulation of the Quality (resonance) parameter. Bi-polar.
- Formant — Toggles between Formant and Oscillator modes. In Formant mode, Span adjusts spacing between bands. In Oscillator mode, each band self-oscill
How-To Guides
- Formant Vowel Shaping
- Self-Resonant Triple Oscillator
- Sweeping Bandpass Filter
- Resonant Percussion Pings
- Evolving Harmonic Drone
- Talking Bass Synth
Explore the interactive Three Sisters panel on BleepDex — tap any control to learn what it does.
