Moog 907A Fixed Filter Bank Hands-On Demo

This video, via Roberto Raineri-Seith, demonstrates the Moog 907A Fixed Filter Bank (with inductors) from a System 15 modular system.

The 907A Fixed Filter Bank is a vintage Moog modular design that features a lowpass, highpass, and 8 bandpass filters. They are not voltage-controllable. The combination of lowpass and highpass filters at the extreme ends and bandpass filters in the middle allows for fine control over which frequencies are allowed through the filter.

The demo features 2 Moog 921b oscillators (32′ and 16′ rectangular waves) with various FFB tweaks. 

The second video, below, demonstrates each individual bandpass output in progressive order (frequencies: 250, 350, 500, 700, 1000, 1400, 2000, 2800 Hz) to show their individual characteristics:

Delay (TC Electronics D-Two) and reverb (Vermona DSR-3) added.

3 thoughts on “Moog 907A Fixed Filter Bank Hands-On Demo

  1. There is nothing and I mean nothing like the sound of this Original reissued Moog .
    No clone business going on here just pure bliss .
    Moog 907A FFB uses wire wrapped passive inductors which contribute to the cost ,
    the rest of the synth world try to immatate but never quite get there because they are just clones .
    The Model 15 is well worth the price of admission if you are blessed to get one .

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  2. I seem to remember a long time ago that someone used the Moog filter bank to accurately recreate the resonances of a violin body and was able to get a very realistic violin tone. I wonder if it would be possible to have voltage control on a fixed filter bank and whether or not it would produce interesting results.

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