[sdiy] 4-pole SVF theory

[Neil Johnson]

Hi,

David Moylan wrote:
> I found some references a while back on the Rane website, used for a
> crossover:
>
> www.rane.com/pdf/linriley.pdf

Yes, that's a reasonable paper to read.  It shows the general
structure of a 4-pole SVF, and understanding the relationships between
the feedback paths is crucial.

> Not a complete analysis there, but should get you started.  In the end I
> slogged through the math to understand what was going on.  I'm not at
> home so don't have my notes handy.

The math isn't too scary as long as you're comfortable with the s-operator.

Cheers,
Neil
-- 
http://www.njohnson.co.uk