I am happy to finally release the Dual Filter module for Eurorack.
The SoundForce Dual Filter is a 2-stage cascaded OTA design based on the late MS-20. The design has been fine-tuned with extended resonance control as well as a resonance CV input. Each filter can be either a 12dB/oct low-pass or 6dB/oct high-pass. To keep the module HPs on the low side, the filter mode setting is located on the back of the module. The module was designed to be a very affordable full-featured modern filter.
Highly efficient design:
This design attracted me very particularly due to its beautiful simplicity. With only 2 poles, it uses a total of 3 OTA ICs and 4 OP-AMP ICs for both filters even with the added resonance voltage control. Early on, efficiency and part counts were a focus during testing and development. In combination with automated manufacturing and a very short supply chain, the module has a very high quality standard at a very affordable price. The module uses only A-brand ICs and passive and no costs were cut during purchasing.
The full SoundForce product line-up is now in stock at Signal Sounds in Glasgow in the UK. It’s a really cool store with a great catalog.
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The original Roland Juno 60 and 106 synthesisers remain amongst our favourite synthesisers of all time. Part of their magic was the DCO. A digitally controlled analogue oscillator. This new DCO from @soundforce_nicolas brings that magic to the #eurorack format and it does not disappoint! Plus, the kind of people who package their gear with a Stroopwafel and a Star Wars bottle opener are our kind of people! Don’t hang about… they’re on our website now 👉🏻 #mondayisnewmoduleday #synth #synthesiser #roland #DCO #abouttodiveinonthisfortyminutevideoondcos #stroopwafel and #coffee
This problem was fixed thanks to Pier, a customer with a lot of experience in front end development. Thanks a lot!
A customer let me know that the control panels stopped working with the latest Google Chrome version (on Mac Version 77.0.3865.90). A fix will come asap, in the meanwhile try to install the previous version (74.0.3729.169): For Mac and for windows.
Google has broken the MIDI API support on the new version, let’s hope the next version will fix that problem.
I am super stoked to announced that customers in the US can now order SoundForce products from Perfect Circuit (Burbank, CA). With great advantages such as free shipping (above 99$), easy returns and an extended warranty. Of course you can order online (https://www.perfectcircuit.com), but they also have a brick and mortar shop in Burbank, so you can try the products there before purchasing if you are in the area.
All the preorders have shipped last week. So far the feedback is excellent. Both products are now in stock and usually shipping within a week. I have few dedicated customers that ordered the full product line-up. I will post pictures of their setup when I receive them, first one is below.
This 14/15/16 of June I will get plenty of modular action. I am going to 3 events that are organised by dedicated and passionated people.
On Friday the 14th, there is an event in my hometown of Enschede, in the Netherlands. We have a great little of community of syntheads. Last edition was a lot of fun. It takes place in the sickhouse, an old Hospital building where all sort of cool underground and art things are going on. Link to event.
On Saturday, I will travel to Belgium (my country originally) to participate to the PULSE festival. There is a great live line-up and a nice makers maker. It sounds very promising, there is a second hand market and some interest for DIYers. Link to event.
On Sunday, I have the opportunity to present my modules at the Square Wave modular improvisation session in Deventer, The Netherlands. Link to event.
The SoundForce DCO is an oscillator for Eurorack based on the architecture of the Juno-60/106 oscillator section. It is a modern homage to that sound using technology from the future. It provides true analog waveforms with digital stability.
A DCO is not an all-analog VCO but also not a digital oscillator. It’s an hybrid design that combines the best of both. Similarly to many VCO’s, the DCO generates its core waveform, the saw wave, by charging a capacitor in an op-amp integrator configuration. A VCO will restart the waveform cycle when the signal has reached its maximum amplitude. But the DCO starts an new cycle when a micro-controller, a small computer chip, commands it to. The micro-controller also controls the rate at which the capacitor is charging, hence the frequency of the oscillator. As with a digital oscillator, the DCO acquires the CV input voltages and turns them into numbers that will later set the frequency of the oscillator. This is done inside the micro-controller using 16 bits sigma-delta analog to digital converters. All signals are true analog signals. The PULSE wave is derived from the SAW wave using a comparator and the SUB oscillators are generated using a flip-flop IC. Furthermore, the use of a very modern micro-controller with built-in 32 bits timers have improved the frequency accuracy a lot compared to the original design.
If you want to dive deeper in the technicalities of DCOs, check out this video from GOLT! : https://www.youtube.com/watch?v=mqY6cVJS9fo
The SoundForce DCO features 10 slide pots (faders) reminiscent of the Roland synths. 5 sound sources are available: SAW, PULSE, SUB1 (1 octave lower), SUB2 (2 octaves lower) and NOISE. The built-in mixer allows you to mix them together using the faders and the MIX output jack. The PULSE has manual pulse width control, as well as PWM with a CV input and an attenuator. An FM input is also available with an attenuator. The oscillator can be hard synced to another oscillator using the SYNC input.
– Frequency range : 20Hz – 14kHz
– Depth: 24mm (+ power connector)
– Power: +12V 82mA, -12V 26mA
– V/OCT input range -3 to 7V
– FM input range -5V to 5V
– PWM input range -5V to 5V
Price and availability:
The module will be shown on the SoundForce booth next week at Superbooth (booth O501) along with some more upcoming modules. It’s available right now to pre-order at 229 euros (189 euros outside of Europe) on the SoundForce webshop. It will be shipping in June.
New sign for Superbooth 2019 with led lights and everything! Come check it out at booth O501, where Thonk used to be last year. It’s just next to the pace where you can get the delicious pretzels… Also my neighbour will be Malekko!