Many thanks for this Ken. It clears up my misunderstanding (misremembering)
of the module as not having octave related bands (250, 500, 1K, 2K and 350,
700, 2.8K and both groups related to 14K) , and having some strict
relationship between bands like 1/3 octave or 1/7 octave. Strange indeed.
JB
In a message dated 10/6/99 5:23:52 AM,
Ken.Tkacs@... writes:
>The Moog 907 Fixed Filter Bank had ten controls. The first knob was a
>
>shelving filter marked "Low Pass" and the last "High Pass." In between,
>the
>
>resonant frequencies of the bandpass filters were labeled: 250Hz, 350Hz,
>
>500Hz, 700Hz, 1Hz, 2 KHz, 2.8KHz, 14KHz. Some of those seem strange, but
>
>that's what the schematic says.
>
>
>
>The input stage has a one-transistor amplifier, and the output stage was
>a
>
>two-transistor deal. The filter stages were all
>
>poteniometer/2-inductors/3-capacitors/3-resistor deals.
>
>