Sequential Prophet X/XL

Synth and sample engines polyphonic

I’m saving my pennies for a Sequential Prophet X, it’s on my 2019 buy list. It’s a stretch for my saving capabilities but I like this synth that much, I just might make get there. It may not be the case in the long run, but I think I can exist with this as my sole polyphonic till death do us part, ha!

Essentially the X and the XL are identical machines, except the XL is larger, and has a 76 key semi-weighted keyboard. The X has a 61 key semi-weighted keyboard.

I’m a Pro 2 owner, so the features and controls on this synth I am very comfortable with. Dave Smith’s feature set and design are near perfect in my opinion.

With essentially 4 oscillators (2 digital oscillators and 2 sample instruments), it has 8 voice-mode stereo, 16 voice-mode mono, and 32 voice-mode paraphonic with a single oscillator and sample instrument. Halve those in stacked or split modes. Its bi-timbral capabilities are something I look forward to. Be sure to install the v2.0.0.0.1 or newer OS to get the full voice functionality.

The sample abilities are incredible, plus you can add 50GB of user-imported samples or 3rd-party samples (see the Mapping Utility videos in UO X/XL Samples & Presets YouTube Playlist below).

The X/XL has a polyphonic sequencer with 64 steps and up to 6 notes per step, with unique sequences for each layer if working in stacked or split voice mode.

Finally, this synth has an incredible effects section, 2 effects per layer, with multiple reverbs, 2 delays (standard and BBD), chorus, phase shifter, flanger, ring mod, vintage rotating speaker, high-pass filter, and distortion.

Thanks!
-Yehuda

Manufacturer’s website
https://www.sequential.com/product/prophet-x
https://www.sequential.com/product/prophet-xl

Product support, downloads
https://www.sequential.com/support

Strongly recommended that you download the newest OS, unless you hate bug fixes, stability and new features.
https://www.sequential.com/updating-prophet-x-os

Required MIDI utilities to update OS
http://www.midiox.com (Windows)
https://www.snoize.com/SysExLibrarian (MacOS)

Mapping Utility download
https://8dio.com/instrument/sequential-prophet-xxl-mapping-utility

Facebook Group

Dave Smith Instruments Sequential Prophet X / XL
https://www.facebook.com/groups/719776201445367

Videos

(Uptown Oscillators) UO Sequential Prophet X YouTube Playlist
(Uptown Oscillators) UO Sequential Prophet XL YouTube Playlist
(Uptown Oscillators) UO X/XL Samples & Presets YouTube Playlist
(Uptown Oscillators) UO Prophet X/XL Music YouTube Playlist

Useful links

Be sure to join the Uptown Oscillators Facebook Group!
https://www.facebook.com/groups/UptownOscillators

This page is a living document, subject to update and expansion. Last edited – 12/29/2018
If you have any content you think should be added, or would like to help author gear pages/posts, please leave a comment here or on our Facebook group.

Manufacturer Specifications: click to open/close or jump to comments

Prophet X/XL Specifications

SAMPLE PLAYBACK
  • 2 multi-sampled stereo instruments per voice with editable sample start, sample end, loop size, and loop center, loop on/off, sample reverse, sample stretch, bit-rate reduction, and sample rate reduction
  • Forward and forward/reverse loop modes
  • 150 GB of factory-installed 16-bit, 48 kHz sampled instruments created by 8Dio
  • 50 GB of additional storage for user-imported samples or 3rd-party sound libraries
  • High-pass and low-pass filter per instrument
  • Instrument 1 and instrument 2 delay as mod destinations
OSCILLATORS
  • 2 digital oscillators per voice with selectable sine, sawtooth, pulse, and supersaw waves. You can vary the shape of any of the waveshapes.
  • Glide (portamento): separate rates per oscillator; (samples can glide in Sample Stretch mode)
  • Hard sync
FILTERS
  • 2 x analog 4-pole resonant low-pass filter per voice
  • Digital high-pass filter in Effects section
ENVELOPES
  • 4 loopable, five-stage (ADSR plus delay) envelope generators: Filter, VCA, and two assignable
SEQUENCER
  • Polyphonic step sequencer with up to 64 steps (6 notes per step), and ties and rests.
  • MIDI note output
  • Sequences can be copied between Layer A and Layer B
AMPLIFIER ENVELOPE
  • Four-stage (ADSR) envelope generator
  • Velocity modulation of envelope amount
LOW FREQUENCY OSCILLATORS
  • 4 LFO’s with key sync, phase offset, and slewing per LFO
  • Five wave shapes: triangle, sawtooth, reverse sawtooth, square, and random (sample and hold)
MODULATION
  • 16-slot modulation matrix
  • 28 sources
  • 92 destinations
  • 11 additional dedicated sources: mod wheel, pressure, velocity, breath controller, footswitch, LFO 1, LFO 2, LFO 3, LFO 4, Env 3, Env 4
ARPEGGIATOR
  • Fully-featured arpeggiator with up, down, up+down, random, assign modes
  • Selectable note value: 16th note, 8th note triplet, 8th note, dotted 8th note, quarter note
  • One, two, or three octave range
  • Re-latching arpeggiation
  • Note repeat
  • Beat sync
  • MIDI note output
ALTERNATIVE TUNINGS
  • 64 preset alternative tunings
  • Additional alternative tunings can be imported via SysEx
DIGITAL EFFECTS
  • 2 digital effects on each layer
  • Stereo delay, BBD delay, chorus, flanger, phaser, ring mod, vintage rotating speaker, distortion, high-pass filter, spring reverb, room reverb, hall reverb, super plate reverb
CLOCK
  • Master clock with tap tempo
  • BPM control and display
  • MIDI clock sync
PERFORMANCE CONTROLS
  • Prophet X: Full-sized, semi-weighted, 61-key 5-octave keyboard with velocity and channel (mono) aftertouch
  • Prophet XL: Full-sized, semi-weighted, 76-key, Fatar TP/8 keyboard with velocity and channel (mono) aftertouch
  • Backlit pitch and mod wheels
  • Spring-loaded pitch wheel with selectable range per program (1 to 12 semitones up and down)
  • Transpose controls for an 8-octave range
  • Hold switch latches held notes on
  • Polyphonic glide (portamento)
  • Unison (monophonic) mode with configurable voice count
PATCH MEMORY
  • 512 Factory Programs (4 banks of 128) and 512 fully editable User Programs with 2 layers (2 separate sounds) in each Program
IN/OUT
  • MIDI In, Out, Thru
  • USB MIDI
  • Sample import jack for USB Stick
  • Main stereo audio output: 2 x 1/4″ phone (TS, unbalanced)
  • Output B stereo audio output: 2 x 1/4″ phone (TS, unbalanced)
  • Pedal/CV: responds to expression pedals or control voltages ranging from 0 to 5 VDC (protected against higher or negative voltages.
  • Volume: responds to expression pedals or control voltages ranging from 0 to 5 VDC (protected against higher or negative voltages.
  • Sustain pedal input: accepts normally on or normally off momentary footswitch.
  • Sequencer: accepts normally on or normally off momentary footswitch to trigger sequencer playback.
  • Headphone output: 1/4″ stereo phone jack.
POWER
  • IEC AC power inlet for internal power supply
  • Operates worldwide on voltages between 100 and 240 volts at 50 to 60 Hz
  • Power consumption: 25 watts maximum
Prophet X PHYSICAL SPECS
  • Dimensions: 38.44″ L x 13.53″ W x 4.13″ H (97.6 cm L x 34.3 cm W x 10.9 cm H)
  • Weight: 24 lbs
Prophet XL PHYSICAL SPECS
  • Dimensions: 46.8″ L x 15.5″ W x 4.1″ H (118.7 cm L x 39.4 cm W x 10.4 cm H)
  • Weight: 33.2 lbs (15 kg)