Moog Music has a new video out today on The Moog Ladder Filter, the patent for which Bob Moog is being inducted into the National Inventors’ Hall of Fame.
Rick Shaich, Moog Hardware Engineer, narrates the video and explains the Ladder Filter’s important distinction of being “voltage controllable… It’s really the heart of subtractive synthesis, which is ‘The Moog Sound.’”
It’s a great explanation of what a Ladder Filter is/does, and the role it has played in modern music.
Dan (SynthDan1) from Acoustica Software demonstrates his dream synth – a rare 1969 Moog modular:
I fulfilled a life-long dream by buying a 1969 Moog Modular system.
This system was custom-ordered by Rick Powell, a musician and friend of Bob Moog, and was used on a number of pretty bad Moog albums in the 70s.
When I got it it had been restored by one of the top technicians in the United States but had been sitting for a while. The jacks were dirty and the keyboard was entirely non-functional. I shot this video just after getting the keyboard cleaned up and working. I had just reassembled and polished the wood on the keyboard’s cabinet.
This system is a dream to play. It’s far more stable (due to factory stability mods) than I could have hoped for, and the filter is just amazing. This patch shows two 901A oscillators tracking together through the resonant low-pass filter in a typical Minimoog-style setup, with the third 901 oscillator acting as LFO for the filter.