Try keeping the Lowpass wide open (cutoff 164), and just use the HP Effect at max resonance and mix...
Setup HP Effect:
Cutoff: 0
Resonance: 127
Mix: 127
Route Mod Wheel (or other source):
Destination: Effect Param 1
Amount: 127
At 0-127, with full resonance on the HP filter alone, you get about 7 octave sweep of a decent bandpass effect.