[sdiy] Designing 4-pole filters with identical 2-pole stages - why not?

[Florian Anwander]

Hello Tom

Am 22.12.2015 um 14:35 schrieb Tom Wiltshire:
>   I was looking for ways to simplify that. I'd tried equal-R and equal-C filters, and couldn't get the response I needed, so I decided to try making the two*stages*  identical instead. And it works, or close enough for rock'n'roll
That is, what Roland did in the Jupiter-6 (and later in the MKS-80 too). 
Beside threee individual resistors they use resistor-arrays for 
resistors, and use only three R-values for the complete filter circuit. 
C's are also only two values.

Florian