Well, that sounds too resonant. Not what I was looking for.
I've tried different intensities with a triangle (no 2nd modulation source) and a depth af max. I've been changing the stages too.
I've been thinking that maybe it's just a sonic effect what I perceived because when I speed up the modulator the stereo is much more noticieable. Perhaps it's the way the phasers work and the low speed making different notches being almost parallel in the L and R channels.
Anyway, thaks for your help.