[sdiy] Oberheim Xpander Multimode VCF Question

[Magnus Danielson]

karl dalen wrote:
> Or simply take five trim pots one for each tap and
> trim until your ears declares a nice swoosh sound.
> Sometimes what looks neat on paper dont sound to
> interesting. 

Certainly... but he asked for a 4-pole all-pass.

What makes a good sound is an entirely different matter.

Also, I assume that the output of that all-pass would be mixed with the 
input for the null-cancelling effect of a phaser.

The nice thing about the Xpander filter is that it allows easy access to 
a number of unusual combinations that very easily can be accessed and 
chosen among to find what fits a particular sound best.

The rigid-ness of low-pass/high-pass and possibly band-pass is not 
necesserilly what is musically most usefull or meaningfull.

Cheers,
Magnus