Ever since I had the Vermona DRM1 MkIII I found the pitch range of the bassdrum a bit over the top. The range of pitch I usually use was covered probaly only by 1/8th of the potentiometer range. So finally it was time to adress that issue. Continue reading
Category Archives: Synthesizer
monotron Delay CV-Gate mod
The monotrons are sweet little analog toys to fiddle around with. And if you own one you have at least once thought about hacking it, right? Well, so did I and aimed at the monotron Delay. For the standard monotron a couple of resources for modders are available, and especially dinSync´s mod seems to work well for it. But the Delay version appears to handle things a little different…
The main issue is that the gate affects pitch and vice versae.
But only if you look at it from the input side, where you apply external signals to the respective testpoints. From an internal point of view the gate signal is simply derived from the same source as the pitch. So if you apply a +5V gate you are already exceeding the maximum frequency of the oscillator. This results in only a short
A-110-1 Standard VCO improved
While examining one of my A-110-1s to help answer a forum question I noticed that it was equipped with a TL064 op-amp. A quick look at the schematics revealed that it is part of the waveform generation. I am not an expert but from what I´ve learned, the 064 is usually not the first choice for audio applications. So just for fun I replaced it with a TL084 I had lying around.
CS15D channel 1 modification mainboard
This is a follow-up to the general modification article.
In an effort to come up with a more detailed documentation for the mod I made an annotated picture of the mainboard followed by some explanations:
SIEL DK 80 MIDI Continuous Controller (CC) map
I have put together a CC mapping table for the DK 80 after the only mapping list I could find online was actually for the Expander 80 desktop version, which has a slightly different mapping.