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Description
Sequential SEQ-3900 Overview
Learn from Experts
Sequential FOURM: Shape your sound!
From Manufacturer
Introducing the Sequential Fourm
With its legendary tone, hands-on modulation, and uniquely responsive keybed, the Sequential Fourm is a compact, 4-voice analog synthesizer that's built on the legendary Prophet-5 voice architecture including the original envelope response curves and the classic Prophet 4-pole filter with enhanced bass compensation. The dual-oscillator sound engine offers simultaneous wave selection, unison, and the classic prophet-style sync.
Fourm?s 37-note slim-key keyboard features polyphonic aftertouch, unlocking expressive techniques like guitar-style note bends, solo voice swells, and other nuanced articulations. The top panel is inspired by the Pro-One with its deep modulation matrix easily accessible at your finger tips. Route sources and destinations with a button press, visualize connections with color-coded indicators, and build complex modulation paths in seconds. The Fourm includes a 12 VDC power supply.
Benefits
- 37-note slim-key keyboard with polyphonic aftertouch
- Warm and organic, 100% analog signal path
- Intuitive, welcoming knob-per-function layout
- Pro-One style top-panel modulation matrix
- Prophet-lineage resonant filter with bass compensation
- Arpeggiator with sequencer mode
- 128 world-class presets
- Pro-quality, all-steel chassis
Synthesis
- All oscillators have simultaneously selectable waveforms (including the LFO)
- Oscillator B supports low-frequency modes
- Classic Prophet-style sync
- 4-pole resonant low-pass filter
- Feedback with aggressive drive circuit
- 2 ADSR envelopes
- Sequencer supports glide per step
UPC: 855346000487
Items Included
- Sequential Fourm Compact 4-Voice Analog Poly Synthesizer
- Power Adapter
- Limited 1-Year Manufacturer Warranty
Additional Resources
No additional resources available
Sequential SEQ-3900 Specs
Key Specs
| Sound Generation |
Analog
|
| Keyboard |
37 Slim Keys with Synth Action
|
| Touch Sensitivity |
Yes
|
| Expression Controls |
1x Pitch Bend
1x Modulation |
| Number of Sounds, Kits, or Samples |
128x Factory Sound Preset
|
| Maximum Polyphony |
4 Voice
|
| Performance Functions |
Arpeggiator, Octave Shift, Sequencer
|
| Audio I/O |
1x 1/4" TRS Main Output
1x 1/4" TRS Headphone Output |
| Pedal Support |
1x 1/4" Expression/Footswitch
|
| MIDI I/O |
1x DIN 5-Pin Input
1x DIN 5-Pin Output 1x DIN 5-Pin Thru |
| USB I/O |
1x USB-C (Host Connection, MIDI)
|
General
| Item Type |
Keyboard Synth
|
Kit Components
| Sound Generation |
Analog
|
| Keyboard |
37 Slim Keys with Synth Action
|
| Touch Sensitivity |
Yes
|
| Aftertouch |
Polyphonic Aftertouch (Destination Assignable)
|
| Expression Controls |
1x Pitch Bend
1x Modulation |
| Transport Controls |
No
|
Sounds
| Display |
Monochrome LCD
|
| Number of Sounds, Kits, or Samples |
128x Factory Sound Preset
|
| Number of Song Presets |
No
|
| Maximum Polyphony |
4 Voice
|
| Multitimbrality |
1-Part
|
| Built-In Effects |
No
|
| Performance Functions |
Arpeggiator, Octave Shift, Sequencer
|
| Built-In Speaker |
No
|
Synthesis
| Oscillators |
2x Variable (Sawtooth, Sine, Square)
|
| Mixer |
Oscillator, Oscillator 2, White Noise (Level)
|
| Amplifiers |
1x VCA
|
| Envelopes |
2x Filter/VCA/Assignable Envelope Generator: Delay, Attack, Decay, Sustain, Release
|
| Filters |
Number of Filters: 1
Characteristic: Analog CEM 3320 Chip Type: Low-Pass Slope: 4-Pole/24 dB (LPF) Controls: Cutoff, Resonance, Envelope Amount |
| LFOs |
Number of LFOs: 1x Global
Waveforms: Sawtooth Up, Sawtooth Down, Square, Triangle, Random, Sample & Hold Controls/Modes: Clock Sync Destinations: Oscillator 1 Frequency, Oscillator 2 Frequency, Oscillator 1 and 2 Pulse Width, Low-Pass Filter Cutoff, VCA, VCF, VCO, Filter Cutoff, Amp |
| Modulation Matrix |
11-Slot per Patch (3 Sources / 8 Destinations)
|
| Aftertouch Destinations |
Amplifier Envelope Amount, Filter Cutoff Frequency, LFO Amount, Low-Pass Filter Cutoff, Oscillator 1 Frequency, Oscillator 2 Frequency, VCA
|
| Glide/Portamento |
Yes
|
Sequencing & Recording
| Sequencer |
No
|
| Arpeggiator |
Yes
|
| Media/Memory Card Slot |
No
|
Connectivity
| Audio I/O |
1x 1/4" TRS Main Output
1x 1/4" TRS Unbalanced Stereo Headphone Output |
| Pedal Support |
1x 1/4" Expression/Footswitch
|
| MIDI I/O |
1x DIN 5-Pin Input
1x DIN 5-Pin Output 1x DIN 5-Pin Thru |
| CV/Gate I/O |
No
|
| Patch Points |
No
|
| Sync I/O |
No
|
| Network I/O |
No
|
| USB I/O |
1x USB-C (Host Connection, MIDI)
|
| Bluetooth |
No
|
Power
| Power Requirements |
AC/DC Power Adapter (Included)
|
| AC Input Power |
100 to 240 VAC, 50 / 60 Hz
|
| AC/DC Power Adapter |
12 VDC at 1.2 A, Center-Positive (Included)
|
| Power Consumption |
14 W
|
Physical
| Color |
Black
|
| Included Accessories |
No
|
| Dimensions |
22.1 x 9.9 x 2.8" / 56.1 x 25.1 x 7.1 cm
|
| Weight |
8.8 lb / 4 kg
|
Packaging Info
| Package Weight |
13.47 lb
|
| Box Dimensions (LxWxH) |
27.7 x 13.6 x 7"
|
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Bulk Discount
| Quantity | Price |
| 2 | ₹ 134843.1 |
| 3-5 | ₹ 133467.15 |
| 5-10 | ₹ 130715.25 |
| 10+ | ₹ 127963.35 |
Bulk discount will be automatically applied during checkout based on quantity.