Moog 914 Fixed Filter Bank

The Moog 914 Fixed Filter Bank has 12 band pass filters and 2 shelf filters (e.g. low pass and high pass).  The filters do not have gain but each has an attenuator control (I calibrated each filter to unity gain).

 

There are two double-sided PCBs on each side of the module.

 

The left PCB has nine filter sections, each with their own level trimmer.  You can see the filter resistors and capacitors mounted on turrets as they were hand selected.

 

The inside of the left PCB has additional filter sections.

 

The right PCB has five filter sections, each with their own level trimmer.  You can see the filter resistors and capacitors mounted on turrets as they were hand selected.

 

The inside of the right PCB has additional filter sections.

 

I made a mapping of the 14 trimmers on this module.

 

 

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