Solina phaser/chorus

[Sean Costello]

mbartkow at ET.PUT.Poznan.PL wrote:
> 
> Would anybody explain in detail, how the wonderful sounding thing
> is built ? Many people claim everything sounds incredibly when run
> thrugh the one. I have never touched the Solina but the records
> using one allways move me.
> I have heard people used to rip it off the Solina to use as a
> studio effect. I think that would be great to clone it. Are there
> any schemos available ?

I think that this might be the original patent:

http://www.patents.ibm.com/details?pn=US03833752__&language=en

As far as I understand it, the Solina's phaser uses three parallel delay lines. The three delay
lines are swept by two multiphase LFO's, where each LFO generates 3 outputs, 120 degrees apart, with
the out-of-phase outputs being sent to seperate delay lines. The first LFO is around 1 Hz, while the
second is around 6 Hz. The delay time varies between 9 and 15 milliseconds. None of the original
signal is mixed in with the output of the delay lines - this allows for more "true-zero" flanging.

Sean Costello