SQ-1

Ensoniq SQ-1

Released: 1990

MSRP: ?

Synopsis:

Cost reduction of VFX line (no shaper modulator, no pan or LFO rate modulation, smaller sequencer, MIDI only pressure), retaining drum samples/maps. Architecture Class: Rompler.

Ebay Description:

The Ensoniq SQ-1 is a velocity (and MIDI pressure) sensitive 61 key (21 voice, 24 channel multitimbral) synthesizer, featuring dual multimode digital filters, three 4-stage envelopes, an LFO, versatile modulation, stereo effects, 8 track (+ 8 track song) real or step time sequencer, auxiliary outputs, and MIDI. The 80 user editable presets can be saved via MIDI SysEx, 3.5" DSDD disk drive, or cartridge (another 100 presets are in ROM).

Physical

Form Factor	Dimensions	Weight	Audio Input	Audio Output	Communication Port	Control Input	Control Output	Switch Input	Power
61 keys	W:40.375in (102.6cm) H:5.125in (13cm) D:13.375in (34cm)	25lbs (11.3kg)	no	main:stereo aux:stereo	MIDI IN OUT THRU	pedal	no	dual (TRS)	AC

Interface

Compatibility	Multitimbral Memory	Program Memory	External Storage	External Programming	UI Input	UI Output
SQ-1 SQ-1+ SQ-R SQ-R+ SQ-2 KS-32	shares program memory	preset:100 user:80 cartridge:160	cartridge (ROM:SC/ISC RAM:MC-32) 3.5" DSDD disk drive	MIDI SysEx	menu driven	LCD display

Architecture

Multitimbral	Polyphony	Unison	Architecture
24	max:21 (osc:1) min:7 (osc:3)	no	DCO->DCF->DCA->Pan

Output

Effects	Pan Modulator	Volume Modulator	Headphone
24bit stereo multieffects processor (ESP chip), featuring reverb, chorus, flange, phasing, delay, distortion, rotating speaker, compression, wah. Effects can be modulated by performance controls (pressure, velocity, key, mod wheel, CV/switch pedals, MIDI CC, 6 ramps)	no	pressure Env1-3 key LFO MIDI-CC Mod-Wheel Pitch-Wheel noise pedal velocity	yes

Control

Arpeggiator	Arpeggiator External	Sequencer	Sequencer Memory	Sequencer External	Continuous	Program Change
no	N/A	8 track + 8 track song real or step time (supports Sysex dump/load)	notes:9k (SQX-70-S:58k note) sequences:70 songs:30	MIDI pedal	Mod-Wheel Pitch-Wheel MIDI-Bend MIDI-CC1 MIDI-CC2 MIDI-CC4 MIDI-CC6 MIDI-CC7 MIDI-CC10 MIDI-CC70 MIDI-CC92 MIDI-CC93 MIDI-CC94 MIDI-CC95	pedal

Keyboard

Key Pressure	Chord Memory	External Control	External Sustain	Key Scaling	Velocity Curves
channel polyphonic (MIDI only)	no	MIDI (guitar mono mode)	MIDI pedal	pitch:microtonal	4

Sample

Stereo	Sample Depth	Sample Rate	Sample RAM	Sample ROM	Sample Points	Sample Trigger	Sample Loop	Sample Edit
no	16 bit	?	no	?	N/A	N/A	N/A	no

Source

Name	Signal Class	Waveform	Octave Range	Amplitude Modulator	Harmonics Modulator	Pitch Modulator	Wave Assign Modulator
Wave	digital	?	+-4	mix: key velocity	start:velocity	pressure Env1-3 key LFO MIDI-CC Mod-Wheel Pitch-Wheel noise pedal velocity portamento	no

Filter

Name	Signal Class	IC	Resonant	Shape	Frequency Modulator	Resonance Modulator	Shape Modulator
F1	digital	DSP	no	2-3 pole low pass (shares 4 poles with multimode)	pressure Env1-3 key LFO MIDI-CC Mod-Wheel Pitch-Wheel noise pedal velocity	no	no
F2	digital	DSP	no	1-2 pole low or high pass (shares 4 poles with low pass)	pressure Env1-3 key LFO MIDI-CC Mod-Wheel Pitch-Wheel noise pedal velocity	no	no

Envelope

Name	Level	Rate	Loop	Polarity	Trigger	Level Modulator	Rate Modulator
Env1	4	4	yes	no	no	velocity	key velocity:attack
Env2	4	4	yes	no	no	velocity	key velocity:attack
Env3	4	4	yes	no	no	velocity	key velocity:attack

LFO

Name	Waveform	Delay	Polarity	Sync	Delay Modulator	Level Modulator	Rate Modulator
LFO	triangle, sine, sine/triangle, positive triangle, positive sine, up saw, or square	yes	no	no	no	pressure Env1-3 key LFO MIDI-CC Mod-Wheel Pitch-Wheel noise pedal velocity	no

Rompler Models

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