Versatile analog oscillator for your AE Modular synthDesigned by Keurslager Kurt in Belgium
Summary (detailed info below): A stable, 1V/Oct, fully analog VCO, based on the legendary 555 timer chip. Triangle, saw, square and sine wave outputs PWM knob & PWM CV in (with attenuating knob) Lin…Read More…
Summary (detailed info below):
We made it! With the help from French SMD & PCB wizard M4vrick, I designed a versatile, flexible, well-tracking analog oscillator based around the old-school 555 timer chip. Unlike my other kits, this is a finished, tested & calibrated module. It's an analog oscillator unlike any that exist yet in the AE ecosystem, as it really has it's own 'tone' AND it has a sinewave output for all your soothing ambient dreams! However, it has also the option to get really gnarly with FM inputs (both linear & exponential, each with their dedicated attenuator), Hard Sync input (drive another square/pulse oscillator in that input, and be amazed!), and PWM (both with a knob & CV input with dedicated attenuator).
Tracking is close to perfect for over five octaves (less than 6ct drift if calibrated at home). Only the high (ear-piercing) tones start to 'droop' a bit. But that is the nature of fully analog synths of course. Tuning drift with changing temperature is minimal, as there is a dedicated temperature-compensation circuit added to the oscillator. Again: it will not be perfect like digital synths, but it gets close!
Tracking calibration info:
For the true 'perfect tracking', it is best to calibrate the CV input frequency response at home, as this tracking can slightly vary due to temperature and humidity. In order to calibrate, you should remove the frontplate from the module and find trimpots R11 and R13 clearly marked on the front. Connect a tuner to your AE Modular (I use the Ableton Tuner) & feed your AE modular MIDI octaves. If you let it play octaves, your tuner should show you the same note for each MIDI note if the module is tracking well. If this is not the case, you can turn the trimpots using a small screwdriver.
R11: V/oct adjustment - if the alround tracking is off, twist this trimpot & see if it gets better. R13: High frequency adjustment - if only the high frequencies are off, try twisting this trimpot. You will notice the super 'upper' registers (aka ear-piercing), might not be possible to track perfectly. You might also notice that after changing the R13 trimpot, it might be needed to also again tweak the R11 trimpot.
If you have any questions, or anything is off, don't hesitate to contact me!
Keurslager Kurt / Zeno
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As I sell small amounts based in EU, shipping can be difficult/slow/expensive to overseas and non-EU countries. Please know that I really really really do my best to keep it as cheap but efficient as possible, but I cannot be held accountable for delays/lost packages. Please contact me if you want extra info on shipping (or anything really), or if you have ideas to make this part easier! If you are located in Belgium, near Ghent, and you want to pick up your order, let me know! I'll refund you the shipping costs in that case.
Also note that, as a one man business, I cannot promise to ship the same/next day after your order. But you can be sure I try to do it as fast as possible!
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