Category Archives: Dave Smith / Sequential Cicuits

Dave Smith Synthesizer & Sequential Circuits DSI / SCI – all projects by Dave Smith

Dave Smith Instruments Pro2 Monosynth – with 4 CV in/outs and paraphonic voice assignment, 2 filters!

FB: – Dave Smith Instruments. come out with a new synth. since P12 and rack and Mopho 4x are out – what could be expected?

Its a monophonic Prophet 12 – the Pro 2 with 32 Step Sequencer – it is NOT a P12 repacked – it has 2 filters and more digital waves and the Delays are bucket delay emulations x4.
the sequencer allows to RECORD in Step Mode like BS2, Pro One etc..

Originally Posted by Pym (DSI)
“To expand a bit on the sequencer:
– Step mode that steps through one step at a time from key, ext audio, or a CV input
– Slew PER STEP on every sequence track
– Live recording using knob movements that automatically assign the param to a new sequence
– Point to point slew (per step) so you can do precise ramps on parameter changes per step
– Note slew on the main track for 303 style sequences (all oscillators)
– Step recording: toggle record on and start pressing keys to enter the sequence
– In step input, hold a key and turn a knob to assign that param to the step and hear the changes in realtime, makes it super easy to enter what you want quickly
– Envelope trigger on/off so you can have param/CV/MIDI tracks running independently of keyboard/synth playback, or hold a note and have it affected by the param changes without retriggering
– You can use every track as a MIDI track if you want to control multiple instruments”

Was könnte da kommen von Dave Smith (klicken um eine Liste der DSI Synths zu sehen)? Ein Monophoner mit CV Interface – Pro 2 – sie werde in der Matrix verschaltet – you can set these CVs to be addressed by the matrix or/and the sequencer that allows 16 or 32 steps with 8 or 16 tracks (!)
Test im SynMag 48!

cv pro2

Forum: Neuer Synth von Dave Smith
Here it is – the Pro2 with CV control and 4 OSCs that can be used as 4 voices with 1 OSC with one filter (paraphonic)

zoom in here – sort of mopho – or s small P12/2 -> P6 mopho 6voice ..? that could be tempting, huh?

Endlich ein würdiger Evolver Nachfolger:

  • polyrhythmic 16 track with mod matrix – can control external synths
  • SSM based 4pole
  • SEM-Style Multimode 2pole
  • Envelope follower, Sequencer Audiotrigger-In
  • 4x CV IO can send oscs, lfos etc to cv as well
  • better Delays + Distortion
  • Paraphonic 4x (its 4 oscs like the p12)

about $2000 -> update: it’s 1700€

some audio by Robert Rich

nd in the video you can see this DSI module, which might be just one for the show here, but possibly gives us the sign to use the only left new Curtis Chips in a module by DSI themselves?




SCI Prophet 600 – new open firmware makes all knobs work as MIDI controllers

this little nerdy project gligli/p600fw · GitHub. provides an update for the Prophet 600 –
it is some hardware modification but also updating the internal firmware by a new OS.. it’s not as easy as updating new synths via MIDI, but after all you can control the P600 via MIDI Controllers – so it is a bit like europa for the Jupiter 6 or Covariant for the Jupiter 4..

via Forum: Neue Firmware für Prophet 600 

Sequential Circuits Prophet600 synthesizer1x Multi Timbral, 6 Voice, (1982) 
Sequential Circuits Prophet 600 Analog Synthesizer 
+ simple sequencer 
2 OSC, 1 Filter, 1 LFO, 2 EG
subtractive analog synthesis, 
61 Keys, MIDI Ctrl, Sequencer, ~900€ (in 2005) continue / weiter..?

Dave Smith Instruments Mopho x4 Polyphonic Analog Synthesizer

Dave Smith Instruments :: Mopho x4 Polyphonic Analog Synthesizer is near.

Basically it is a slightly larger Mopho Keyboard , Mopho KB Analog Synthesizer with 4 voices and (my beloved) 3.5 octave sized keyboard (thanks Dave!). Very perfect form and style.

USB for MIDI, MIDI in, out/thru combi plus keychain for more voices.

filter FM is possible and 20 mod routings now (!)
no ringmod or OSC FM as the standard Mopho, but this one looks very very suitable for the stage – well done on this format and it still has the 4×16 mod-sequencer! let’s check if the 12dB/oct. Filter is still almost with very few resonant behaviour. puh, I’d love to buy one of these if it had those nice OSC-based noise “thingies”. right, I am looking for a nice Evolver, like the MEKHybrid Synthesizer 4 voices and shaped like this, be perfect (as long as the knob quality is ok for the stage)…

Forum:  Neuer Prophet oder was bei Dave Smith für 2012? (seit Juli war ja schon was im Busch)..  -> US$1300 = 1300€ over here

very cool answer to Microkorgs but not as flexible still for the OSC-based noise – but this is tempting, really.

Dave Smith Instruments – Tempest new introduction video

Dave Smith Instruments – Tempest looks like still unreleased project for a time, but there is progress which is like this footage – which is almost like “they’re new release”?..
and one of the comments are correct- he sounds like Bob Ross.

all new video btw. – and well explained..
looks like the design did not change much (darker?)..
it DOES has chase light kind of TR-Style Programming, dynamic Pads and all those MPC-Style “16 Velocities”, Tunings etc. aboard, so this is basically a good thing to have – a drum synth that generates its sounds from – well – synths. as mentioned before when they announced it..

and he says it’s 400 samples within the digital domain (4 OSCs so you got actually 2 samples and 2 analog oscs for one sound).
it’s 2 LFOs and 8 modulation slots (the matrix). so compared to a mopho it has less LFOs but more mod matrix slots and 5 AD-envelopes – since this is a drum synth, imagine to control more than just pitch, amp and filter.

here’s a more musical example. hip hoping for a future? I mean for da phut’sha, bitch!

NAMM11: not Boomchik but Dave Smith Instruments Tempest Analog Drum Machine Roger Linn Design

Dave Smith Instruments- Tempest Analog Drum Machine- Roger Linn Design.

Remember the Boomchik from Mr Linn and Mr Smith? It’s here, but it has a new name at NAMM 2011, looks nice. it’s 2 analog and 2 digital Oscs. lpf filtering (analog), hpf 2pole hpf (like other DSI synths got). analog distortion & compressor (hey) and 16 Pads, 2 Ribbons.So it’s sort of analog Groovebox – sounds good as I can tell from a YT video..

this gonna be seen in the clubs over here, I guess..
SAMPLES can be used as well – but possibly in the second run/update –  which is important to know, don’t know how long the patterns can be but sonically this is worth a look, don’t know if you can record without stopping it etc.. but there’s step progging in it Roger Linn says at 5:40.Since it is enough Pads you can also tune them. IT GOT DYNAMICS!

here’s how to program it – the TR-style (there’s no position light but you can set the steps individually, like on the Radias)

here’s another more basic introduction by the nice guys themselves..

Diskussion zum Tempest TEMPEST von Roger Linn & Dave Smith

important notes from something or somebody called pym via forum:

1. There will not be user sample loading in software version 1.0, it may be added in 2.0
2. The sequencer will have a lot of functionality; basic structure will be up to 32nd Triplet resolution and a loop length of up to 8 bars
3. The sequencer will be able to record pitch, velocity and duration, plus 4 assignable parameters per sound (you have 16 sounds per beat, each with it’s own sequence). You can record those parameters by live knob movements, using the sliders position or pressure, external MIDI, or pedal inputs
4. There will be nudge options for the sequencer, as well as moving the whole sequence over by one step. Seriously I can’t count how many times I started making a beat and realized that the 1 was somewhere in the middle… drives me nuts when I have to redo the whole thing
5. The touch sliders have both position and pressure response, both are assignable.
6. There are several CPUs in the Tempest, a PIC32 running at 80MHz is the main processor
7. You can indeed use the Tempest as a 6 voice synth. You can ALSO use the Tempest as a 1 voice synth and have the other 5 voices playing drums (or 2 1 voice synths, or 1 2 voice synth, or any combination thereof). So hook up a keyboard controller, assign a pad to one voice and a MIDI channel, then you can play a live bass or lead over the drums
8. You can definitely take the wood sides off the machine, the metal is folded down over the sides so it looks just fine and rather sleek with the wood off. If you like I’ll take a picture for you guys when I get back home.
9. Waveshapers? I’m not exactly sure what that’s about, if you elaborate maybe I can answer. It has no digital FX in the path, it’s all analog except the chip doing sample playback
10. It will be rack mountable, but I’m not sure whether or not we’ll include them in the initial product. I’ll get back to you on this closer to production
11. There probably will not be an editor on release but if someone would like to start one I will give you the CC/NRPN layout and all Sysex functions as soon as I code them in so you can get a head start.
12. There will not be a VST on release. I would love to have one, but the overall cost of doing a VST is far more than is worth it (mostly due to the support nightmare of so many DAWs and so many systems)
13. There are 2 pedal inputs, both can be assigned to either an on/off switch or a pedal CV input. These should handle drum trigger inputs as well (although we haven’t tested them with any yet)
14. Delay is being handled at a kit/mixer level so you will have one set of param settings for the delay and a send amount for each individual sound
15. At this time no encoders are assignable. The sliders position and pressure are however
16. The digital oscillators have a lot of options, but the DSP is less powerful than the chip we were using the Evolver. We will have the Prophet VS waveforms as well as a lot of noise options (some cool ones like green noise, UV noise, resonant noise, etc) for doing layering.
17. The Digital oscillator source will have a mix control for sending the signal pre/post analog filter
18. There’s no DSI MIDI controller in the works… we like our analog stuff
19. The LEDs are blue, not purple. They will not be as bright/piercing in the final version since we’ll have a translucent cover over them. Also we’re looking into cyan/aqua LEDs but it’s hard to find them
20. We could have made it cost less, like 1500-1800$, but it wouldn’t have the touch faders and the pads. We chose to make it slightly more expensive but WAY more fun to play
21. The build quality, if I do say so myself, is rock solid. Solid steel on the outside, pads are solid (not gummy or flimsy) and the knobs are the same as the Mopho keyboard. I’m sure someone who has checked it out here at NAMM can confirm this one way or the other
22. You will have some degree over controlling note stealing. You can assign a particular sound or set of sounds to a particular voice for example, and you can route that out the corresponding stereo output so it bypasses the compressor/distortion circuitry if you so choose. I also may implement some sort of customizable priority handling
23. LFOs and Envelopes are digital. They are twice as fast as our other synths so you get an extra octave out of the LFOs and much quicker envelopes. The LFOs have time sync
24. Each of the envelopes have a ‘peak time’ parameter that holds the maximum of the envelope between the attack and the delay time. The param goes from 0-127 and scales from ms increments in the low amounts to about 3 seconds at 127. You can get really tight gating effects using the envelopes in this fashion
25. The 6 stereo outputs (1 per voice) are TRS jacks
26. There will be a mapping setup so you can use a mopho keyboard or prophet as a controller
27. The USB interface will be MIDI only in version 1.0. I may add file system support for samples in version 2.0, but I don’t want to get anyone’s hopes up yet. It cannot do audio over USB.
28. We do not have advanced features in the sample playback chip, however those are not out of the question for a future release. These include things like start/end point of loops and triggers, digital FX, sample reduction and bit crush, etc, etc. They would only affect the digital samples as there is no ADC in the signal path, it’s a fully analog path. However we do really want to add a ‘reverse’ toggle for a sound which would affect both the analog and digital portions

These are things that I am coding into the structure of the sequencer but probably will not be in the initial release of the product:

1. Individual step delay and groove templates
2. External MIDI control from the sequencer
3. Individual sequence parameters such as sequence length and sequence swing per sound
4. Exotic combinations of time sigs (7/8 over 3/4 or whatever). The initial version will have the basic range of time sigs possible over the whole sequence. You could do 5/8 for example, or 17/32.
5. Sequencer playback modes like reverse

Hopefully that answers most questions people have had. I’ll take another run through them in the next couple days