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 SQ8L / SQ8X by Siegfried Kullmann is a Virtual Instrument Audio Plugin for Windows. It functions as a VST Plugin.
SQ8L / SQ8X
Product SQ8L / SQ8X
Developer Siegfried Kullmann
Price (MSRP) Free / TBA
Type / Tags
Plug-in, App & Soundware Format(s)
Instrument(s) 
Operating System Availability
Operating
System
Latest
Version
Download Released
 0.91b  Downloads Released
Miscellaneous Information
Copy ProtectionNone

SQ8L is a software model of Ensoniq's classic 1980s synth SQ80. The SQ80 features 3 digital wavetable oscillators for each of its 8 voices which are fed through analog 4-pole lowpass filters (-24dB gain) with resonance. Sound parameters can be modulated by 4 envelopes, 3 LFOs and several MIDI sources. The SQ80 also has a predecessor, the ESQ1, which can do most of the same stuff.

Although the technology may seem obsolete, these synths can produce a wide variety of interesting and extremely usable sounds. Thanks to the lo-fi oscillators and the analog components it can sound very digital and dirty, but also very analog and warm. Which is a good thing because modern synths often tend to sound rather clean.

The SQ8L ("L" stands for "Light") is the free demo version of the forthcoming SQ8X ("X" for "eXtended"). Besides any bugs that will be fixed in the full version and planned features that won't find their way into the light version, there are only a few limitations:

  • Polyphony limited to 8 voices.
  • Program change messages ignored.
  • Common MIDI controllers (Master Volume, Pan,...) by default have no effect and must be programmed as modulators.
  • When used with a sequencer, the only sound the host can save within the song file is the one in the edit buffer. The full version will store the entire library (which makes sense when program change messages are used).
  • LFO humanization not implemented.
  • No Split/Layer to combine several sounds.
  • No internal sequencer (and there will never be one).

The full version SQ8X will have the following additional features:

  • Combinations of up to 4 single sounds.
  • Adjustable polyphony (far more than 8 voices).
  • New Filter algorithms with different modes (lowpass, bandpass, highpass).
  • 2nd Filter and different routing modes for the filters: serial, parallel, split.
  • Improved GUI.
Discussion: Active

Discussion

2 December 2013 at 12:19pmwallplug

Will there ever be an update for this wonderfull VST-i?

64-bit, VST3 all in the long awaited SQ8X???

2 December 2013 at 12:29pmWildfunk

Unfortunately not :-(.

2 December 2013 at 12:37pmsharkie

That is so unfortunate....

17 February 2014 at 9:59pmdwozzle

The read-me says...

  • Program change messages ignored.
  • When used with a sequencer, the only sound the host can save within the song file is the one in the edit buffer.

Does anyone know if those statements are actually true? If they are, its usefulness is extremely limited. If not, it'd be great. I still have an ESQ-M, not used a lot any more, but I really liked it back in the day.

18 February 2014 at 7:52amT-CM11

I don't know... I never use program changes, and have never used more than one instance per song.

It's free and it sounds great, that's a lot of usefulness to me! But yeah it's too bad that it never got any further developement.

12 August 2014 at 9:31ammichaelmoye

sign up.

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