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Radikal Technologies | Spectralis


The Spectralis is a professional synthesizer, groovebox, and sequencer created in 2004 by Radikal Technologies. Contained within is a powerful monophonic hybrid synthesizer (the Asynth) composed of 4 digital oscillators that can pass through two analog filters (a 4-pole 24dB LP filter and a 2-pole 12dB multi-mode filter), a 32 stereo voice polyphonic multisampling sound engine (the Dsynth) that pass through a digital 12dB multi-mode filter, an 8 bandpass fixed filterbank a plethora of LFOs to modulate parameters, two delay effects, and an extremely complex and powerful pattern-based sequencer section to sequence internal sounds and parameters as well as external gear. The Spectralis has 32 available songs, each with 32 patterns available.

The 4 digital oscillators in the Asynth can be shaped continuously from a sine wave to a square wave, as well as FM, PM, oscillator sync, and bit reduction. Each oscillator can be modulated using something called time linearity modulation, which is a fancy way of describing pulse-width modulation (though in this case, any waveform can be modulated, not just a square wave).

The oscillators, analog filters, and filterbank can be independently triggered by 3 Trigger Groups (TGs). Each TG can be sequenced independently using the sequencer. Here is an example: Oscillator 1 and the 24dB filter are triggered using TG1, Oscillator 2 and 3 and the 12dB filter are triggered using TG2, and Oscillator 4 and the filterbank are triggered using TG3. Now each of these TGs can be activated independently on the sequencer, allowing the user to sequence three different monophonic synth parts! This may seem confusing, but there are tutorials online that go through explaining this in greater detail. The manual also has a lesson through which the user can learn how to sequence trigger groups. Trigger groups are likely one of the least understood and most powerful features of the Spectralis.

There are 3 independent Dsynth parts (3 part multi-timbral), through which the user can load 3 different sounds and sequence them using the sequencer or by real-time playing of a polyphonic motif. Up to 128 mb of samples can be loaded into RAM at one time. The Spectralis allows the user to import any sampled sound. The process is fairly straightforward on PCs with the importing program, allowing the import of .wav and soundfont2 files. For those using a Mac, a user on the Radikal Technologies forum has made it possible to import and create multisamples using a program called Swami. Each Dsynth timbre can be independently routed into the analog section, whereby they can be directed into either of the analog filter or the fixed filterbank.

There are two sequencers in the Spectralis. The drum matrix provides a simple xOx style programming whereby 11 different sampled drum sounds can be sequenced independently. The other step-sequencer is much more powerful, allowing the user to create 24 sequencer-lines that can be set to target internal functions as well as sequence external gear. Internal functions include sequencing trigger groups, analog filter cutoff and resonance, LFO parameters, each filterbank bandpass (which can be used to create interesting rhythmic parts), pitched drum parts, and dsynth parts. Each sequencer line can be set to lengths from 1 to 192 steps and different resolutions (the length of each step), set to play in various ways (forward, backward, forward then backward and vice versa, and random), and each step can be muted, pitched, and set to different probabilities of playing.

BrandRadikal Technologies
Engine TypeDigital
Voices (max)33
LFO10, variable wave shapes
Engine Detailed4 DSP hybrid oscillators. Waveforms - Saw, Sine, Square, Triangle, all with TLM and multi samples. Monophonic synth with analog filters and a full digital Polyphonic synth
Sampler44.1kHz stereo sampler with 128MB
Filter (VCF)24 dB/oct lowpass with ADSR, 12 dB/oct multi-mode with ADSR, 8 bandpass fixed filterbank
Envelope (VCA)Independent envelopes per part
FX2 independent delays
Memory32 quicksounds per part
ArpeggiatorUp (U), Down (D), U + D, Random, as played, chord memory
Recording32 user patterns per song, 32 songs
Key typeButtons
Audio2x stereo out, SPDIF out, Stereo in
MidiI-O, USB
Produced:2004 - 2004
Legend: Obvious Y: Yes, N: No, N/A: Not Applicable
VCO Voltage Controlled Oscillator DCO Digital Controlled Oscillator
LFO Low Frequency Oscillator Sub Sub Oscillator
VCF Voltage Controlled Filter VCA Voltage Controlled Amplifier
Velocity As with a piano, the harder you hit a key, the louder the sound, unlike most organs which always produce the same loudness no matter how hard you hit a key. Aftertouch Pressing a key after you activated it. Channel Aftertouch, no matter which key, it will send a Channel message. Poly Aftertouch, sends the pressure per key instead of the whole channel.
Values for OSC, LFO, Filter, Envelope are per voice unless stated otherwise.


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